/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:31:01,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:31:01,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:31:01,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:31:01,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:31:01,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:31:01,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:31:01,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:31:01,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:31:01,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:31:01,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:31:01,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:31:01,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:31:01,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:31:01,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:31:01,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:31:01,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:31:01,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:31:01,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:31:01,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:31:01,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:31:01,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:31:01,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:31:01,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:31:01,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:31:01,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:31:01,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:31:01,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:31:01,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:31:01,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:31:01,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:31:01,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:31:01,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:31:01,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:31:01,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:31:01,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:31:01,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:31:01,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:31:01,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:31:01,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:31:01,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:31:01,632 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 [2020-10-29 13:31:01,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:31:01,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:31:01,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:31:01,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:31:01,703 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:31:01,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:31:01,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:31:01,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:31:01,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:31:01,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:31:01,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:31:01,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:31:01,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:31:01,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:31:01,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:31:01,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:31:01,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:31:01,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:31:01,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:31:01,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:31:01,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:31:01,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:31:01,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:31:01,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:31:01,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:31:01,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:31:01,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:31:01,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:31:01,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:31:01,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:31:02,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:31:02,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:31:02,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:31:02,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:31:02,140 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:31:02,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-29 13:31:02,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afa14dc74/139a9ce7ef3a4e4ebc63528f112a3671/FLAG076c13858 [2020-10-29 13:31:02,953 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:31:02,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-29 13:31:02,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afa14dc74/139a9ce7ef3a4e4ebc63528f112a3671/FLAG076c13858 [2020-10-29 13:31:03,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afa14dc74/139a9ce7ef3a4e4ebc63528f112a3671 [2020-10-29 13:31:03,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:31:03,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:31:03,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:31:03,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:31:03,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:31:03,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:31:03" (1/1) ... [2020-10-29 13:31:03,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7500a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03, skipping insertion in model container [2020-10-29 13:31:03,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:31:03" (1/1) ... [2020-10-29 13:31:03,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:31:03,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:31:03,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:31:03,729 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:31:03,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:31:03,900 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:31:03,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03 WrapperNode [2020-10-29 13:31:03,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:31:03,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:31:03,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:31:03,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:31:03,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03" (1/1) ... [2020-10-29 13:31:03,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03" (1/1) ... [2020-10-29 13:31:03,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03" (1/1) ... [2020-10-29 13:31:03,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03" (1/1) ... [2020-10-29 13:31:03,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03" (1/1) ... [2020-10-29 13:31:03,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03" (1/1) ... [2020-10-29 13:31:03,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03" (1/1) ... [2020-10-29 13:31:03,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:31:03,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:31:03,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:31:03,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:31:03,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03" (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 [2020-10-29 13:31:04,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:31:04,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:31:04,096 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:31:04,096 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:31:04,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:31:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:31:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:31:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:31:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:31:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:31:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:31:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:31:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:31:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:31:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:31:04,102 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:31:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:31:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:31:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:31:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:31:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:31:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-29 13:31:04,103 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:31:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:31:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:31:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:31:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:31:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:31:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:31:04,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:31:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:31:05,349 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:31:05,350 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:31:05,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:31:05 BoogieIcfgContainer [2020-10-29 13:31:05,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:31:05,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:31:05,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:31:05,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:31:05,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:31:03" (1/3) ... [2020-10-29 13:31:05,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738b9822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:31:05, skipping insertion in model container [2020-10-29 13:31:05,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:31:03" (2/3) ... [2020-10-29 13:31:05,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738b9822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:31:05, skipping insertion in model container [2020-10-29 13:31:05,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:31:05" (3/3) ... [2020-10-29 13:31:05,361 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-29 13:31:05,373 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:31:05,379 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:31:05,392 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:31:05,421 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:31:05,421 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:31:05,421 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:31:05,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:31:05,422 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:31:05,422 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:31:05,422 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:31:05,422 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:31:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-29 13:31:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 13:31:05,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:05,459 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] [2020-10-29 13:31:05,460 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:05,466 INFO L82 PathProgramCache]: Analyzing trace with hash 799248134, now seen corresponding path program 1 times [2020-10-29 13:31:05,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:05,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803862633] [2020-10-29 13:31:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:07,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:08,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:09,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:10,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:10,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 13:31:10,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:31:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:31:10,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:10,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:31:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:31:10,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 13:31:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:31:11,556 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:31:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:11,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:11,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:11,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:11,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:11,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 13:31:11,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:11,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:31:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:11,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803862633] [2020-10-29 13:31:11,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:11,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:31:11,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679266980] [2020-10-29 13:31:11,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:31:11,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:11,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:31:11,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:31:11,740 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 10 states. [2020-10-29 13:31:12,275 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-29 13:31:14,060 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:31:14,519 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:31:14,961 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 13:31:15,438 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-29 13:31:15,941 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:31:16,378 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:31:17,050 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:31:17,516 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 13:31:18,004 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-29 13:31:18,517 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:31:18,950 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:31:19,374 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:31:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:21,135 INFO L93 Difference]: Finished difference Result 1496 states and 2393 transitions. [2020-10-29 13:31:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 13:31:21,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-29 13:31:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:21,170 INFO L225 Difference]: With dead ends: 1496 [2020-10-29 13:31:21,171 INFO L226 Difference]: Without dead ends: 1351 [2020-10-29 13:31:21,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 13:31:21,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-10-29 13:31:21,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 309. [2020-10-29 13:31:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-29 13:31:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 442 transitions. [2020-10-29 13:31:21,304 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 442 transitions. Word has length 113 [2020-10-29 13:31:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:21,306 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 442 transitions. [2020-10-29 13:31:21,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:31:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 442 transitions. [2020-10-29 13:31:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:31:21,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:21,319 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] [2020-10-29 13:31:21,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:31:21,319 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash -920224361, now seen corresponding path program 1 times [2020-10-29 13:31:21,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:21,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26305618] [2020-10-29 13:31:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:21,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:21,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:21,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:23,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:26,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:26,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:31:26,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:31:26,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:31:26,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:26,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:31:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:31:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:31:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:31:26,944 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:31:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:26,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:26,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:26,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:26,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:31:26,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:26,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:26,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:26,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:27,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26305618] [2020-10-29 13:31:27,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:27,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:31:27,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318256808] [2020-10-29 13:31:27,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:31:27,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:27,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:31:27,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:31:27,028 INFO L87 Difference]: Start difference. First operand 309 states and 442 transitions. Second operand 10 states. [2020-10-29 13:31:27,504 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:31:28,843 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:31:29,244 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:31:29,681 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 13:31:30,099 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:31:30,487 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:31:30,982 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:31:31,450 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 13:31:31,987 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 13:31:32,405 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 13:31:32,808 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 13:31:33,198 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:31:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:34,745 INFO L93 Difference]: Finished difference Result 1959 states and 3031 transitions. [2020-10-29 13:31:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 13:31:34,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-10-29 13:31:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:34,758 INFO L225 Difference]: With dead ends: 1959 [2020-10-29 13:31:34,758 INFO L226 Difference]: Without dead ends: 1798 [2020-10-29 13:31:34,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=302, Invalid=754, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 13:31:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2020-10-29 13:31:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 563. [2020-10-29 13:31:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-29 13:31:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 844 transitions. [2020-10-29 13:31:34,842 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 844 transitions. Word has length 115 [2020-10-29 13:31:34,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:34,842 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 844 transitions. [2020-10-29 13:31:34,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:31:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 844 transitions. [2020-10-29 13:31:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:31:34,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:34,846 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] [2020-10-29 13:31:34,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:31:34,846 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash -418368108, now seen corresponding path program 1 times [2020-10-29 13:31:34,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:34,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139379662] [2020-10-29 13:31:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:34,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:37,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:38,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:39,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:39,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:31:39,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:31:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:31:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:39,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:31:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:31:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:31:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:31:40,396 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:31:40,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:40,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:40,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:40,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:40,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:31:40,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:40,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:40,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139379662] [2020-10-29 13:31:40,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:40,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:31:40,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679952552] [2020-10-29 13:31:40,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:31:40,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:40,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:31:40,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:31:40,481 INFO L87 Difference]: Start difference. First operand 563 states and 844 transitions. Second operand 10 states. [2020-10-29 13:31:40,932 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:31:42,376 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:31:42,786 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 13:31:43,196 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:31:43,583 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:31:44,032 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:31:44,401 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 13:31:44,820 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 13:31:45,248 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 13:31:45,641 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:31:46,050 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 13:31:46,437 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:31:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:47,656 INFO L93 Difference]: Finished difference Result 2365 states and 3664 transitions. [2020-10-29 13:31:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 13:31:47,657 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-10-29 13:31:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:47,674 INFO L225 Difference]: With dead ends: 2365 [2020-10-29 13:31:47,675 INFO L226 Difference]: Without dead ends: 2129 [2020-10-29 13:31:47,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=302, Invalid=754, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 13:31:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2020-10-29 13:31:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 806. [2020-10-29 13:31:47,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-10-29 13:31:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1229 transitions. [2020-10-29 13:31:47,772 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1229 transitions. Word has length 115 [2020-10-29 13:31:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:47,773 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 1229 transitions. [2020-10-29 13:31:47,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:31:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1229 transitions. [2020-10-29 13:31:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:31:47,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:47,780 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] [2020-10-29 13:31:47,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:31:47,780 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:47,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:47,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1878300861, now seen corresponding path program 1 times [2020-10-29 13:31:47,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:47,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180657138] [2020-10-29 13:31:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:47,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:48,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:48,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:48,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:52,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:52,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:31:52,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:31:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:31:52,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:52,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:31:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:31:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:31:52,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:53,435 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:31:53,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:53,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:53,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:53,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:31:53,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:53,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:53,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180657138] [2020-10-29 13:31:53,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:53,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:31:53,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503717294] [2020-10-29 13:31:53,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:31:53,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:53,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:31:53,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:31:53,521 INFO L87 Difference]: Start difference. First operand 806 states and 1229 transitions. Second operand 10 states. [2020-10-29 13:31:53,998 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:31:55,370 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 13:31:55,841 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:31:56,262 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:31:56,683 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:31:57,076 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 13:31:57,473 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:31:57,895 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 13:31:58,357 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 13:31:58,775 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:31:59,169 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 13:31:59,534 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:32:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:00,330 INFO L93 Difference]: Finished difference Result 2538 states and 3936 transitions. [2020-10-29 13:32:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 13:32:00,336 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-10-29 13:32:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:00,350 INFO L225 Difference]: With dead ends: 2538 [2020-10-29 13:32:00,350 INFO L226 Difference]: Without dead ends: 2302 [2020-10-29 13:32:00,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=302, Invalid=754, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 13:32:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2020-10-29 13:32:00,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 965. [2020-10-29 13:32:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-10-29 13:32:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1481 transitions. [2020-10-29 13:32:00,452 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1481 transitions. Word has length 115 [2020-10-29 13:32:00,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:00,452 INFO L481 AbstractCegarLoop]: Abstraction has 965 states and 1481 transitions. [2020-10-29 13:32:00,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:32:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1481 transitions. [2020-10-29 13:32:00,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:32:00,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:00,454 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] [2020-10-29 13:32:00,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:32:00,455 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:00,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:00,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1422722243, now seen corresponding path program 1 times [2020-10-29 13:32:00,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:00,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306153458] [2020-10-29 13:32:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:05,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:05,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:32:05,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:32:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 13:32:05,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:05,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:32:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:32:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:32:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:06,022 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:32:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:06,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:06,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:06,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:06,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:32:06,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:06,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:06,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:06,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306153458] [2020-10-29 13:32:06,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:06,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:32:06,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852640098] [2020-10-29 13:32:06,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:32:06,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:06,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:32:06,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:32:06,109 INFO L87 Difference]: Start difference. First operand 965 states and 1481 transitions. Second operand 10 states. [2020-10-29 13:32:06,620 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:32:08,050 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:32:08,458 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:32:08,879 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:32:09,244 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 13:32:09,641 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:32:10,055 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 13:32:10,484 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 13:32:10,914 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-29 13:32:11,337 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:32:11,723 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 13:32:12,093 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:32:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:12,639 INFO L93 Difference]: Finished difference Result 2699 states and 4190 transitions. [2020-10-29 13:32:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 13:32:12,640 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-10-29 13:32:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:12,652 INFO L225 Difference]: With dead ends: 2699 [2020-10-29 13:32:12,652 INFO L226 Difference]: Without dead ends: 2463 [2020-10-29 13:32:12,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=302, Invalid=754, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 13:32:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2020-10-29 13:32:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1123. [2020-10-29 13:32:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-29 13:32:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1732 transitions. [2020-10-29 13:32:12,775 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1732 transitions. Word has length 115 [2020-10-29 13:32:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:12,775 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1732 transitions. [2020-10-29 13:32:12,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:32:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1732 transitions. [2020-10-29 13:32:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:32:12,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:12,777 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] [2020-10-29 13:32:12,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:32:12,777 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:12,778 INFO L82 PathProgramCache]: Analyzing trace with hash 786966116, now seen corresponding path program 1 times [2020-10-29 13:32:12,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:12,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146957455] [2020-10-29 13:32:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:12,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:12,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:13,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:13,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:13,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:14,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:17,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:17,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:32:17,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:32:17,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:32:17,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:17,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:32:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:32:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:32:17,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:18,386 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:32:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:18,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:18,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:18,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:18,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:32:18,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:18,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:18,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146957455] [2020-10-29 13:32:18,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:18,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:32:18,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018381352] [2020-10-29 13:32:18,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:32:18,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:18,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:32:18,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:32:18,488 INFO L87 Difference]: Start difference. First operand 1123 states and 1732 transitions. Second operand 10 states. [2020-10-29 13:32:19,090 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 13:32:20,751 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:32:21,187 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:32:21,651 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:32:22,153 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-29 13:32:22,662 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:32:23,193 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:32:23,669 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:32:24,181 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 13:32:24,735 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:32:25,252 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-29 13:32:25,715 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:32:26,126 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:32:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:26,731 INFO L93 Difference]: Finished difference Result 3318 states and 5177 transitions. [2020-10-29 13:32:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 13:32:26,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-10-29 13:32:26,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:26,744 INFO L225 Difference]: With dead ends: 3318 [2020-10-29 13:32:26,744 INFO L226 Difference]: Without dead ends: 2371 [2020-10-29 13:32:26,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 13:32:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-10-29 13:32:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1123. [2020-10-29 13:32:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-29 13:32:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1726 transitions. [2020-10-29 13:32:26,881 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1726 transitions. Word has length 115 [2020-10-29 13:32:26,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:26,881 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1726 transitions. [2020-10-29 13:32:26,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:32:26,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1726 transitions. [2020-10-29 13:32:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:32:26,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:26,883 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] [2020-10-29 13:32:26,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:32:26,883 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:26,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:26,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1899151171, now seen corresponding path program 1 times [2020-10-29 13:32:26,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:26,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231074528] [2020-10-29 13:32:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:28,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:28,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:28,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:28,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:31,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:31,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:32:31,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:32:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:32:31,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:31,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:32:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:32:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 13:32:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:32,332 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:32:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:32,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:32,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:32,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:32,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:32,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:32:32,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:32,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:32:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:32:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:32,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231074528] [2020-10-29 13:32:32,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:32,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:32:32,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160912463] [2020-10-29 13:32:32,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:32:32,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:32,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:32:32,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:32:32,409 INFO L87 Difference]: Start difference. First operand 1123 states and 1726 transitions. Second operand 6 states. [2020-10-29 13:32:32,830 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:32:33,890 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:32:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:34,482 INFO L93 Difference]: Finished difference Result 3167 states and 4936 transitions. [2020-10-29 13:32:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:32:34,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-29 13:32:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:34,492 INFO L225 Difference]: With dead ends: 3167 [2020-10-29 13:32:34,492 INFO L226 Difference]: Without dead ends: 2113 [2020-10-29 13:32:34,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:32:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2020-10-29 13:32:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2110. [2020-10-29 13:32:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2110 states. [2020-10-29 13:32:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3267 transitions. [2020-10-29 13:32:34,716 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3267 transitions. Word has length 115 [2020-10-29 13:32:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:34,716 INFO L481 AbstractCegarLoop]: Abstraction has 2110 states and 3267 transitions. [2020-10-29 13:32:34,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:32:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3267 transitions. [2020-10-29 13:32:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 13:32:34,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:34,718 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] [2020-10-29 13:32:34,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:32:34,718 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:34,719 INFO L82 PathProgramCache]: Analyzing trace with hash -110344098, now seen corresponding path program 1 times [2020-10-29 13:32:34,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:34,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559713585] [2020-10-29 13:32:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:34,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:35,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:35,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:37,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:39,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 13:32:39,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:32:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:32:39,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:39,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:39,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:32:39,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:32:39,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 13:32:39,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:40,168 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:32:40,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:40,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:40,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:40,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:40,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:40,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:32:40,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:40,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:40,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:32:40,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:32:40,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:40,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559713585] [2020-10-29 13:32:40,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:40,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:32:40,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082096639] [2020-10-29 13:32:40,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:32:40,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:40,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:32:40,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:32:40,244 INFO L87 Difference]: Start difference. First operand 2110 states and 3267 transitions. Second operand 6 states. [2020-10-29 13:32:40,700 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:32:41,861 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:32:42,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:42,580 INFO L93 Difference]: Finished difference Result 6098 states and 9507 transitions. [2020-10-29 13:32:42,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:32:42,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-29 13:32:42,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:42,595 INFO L225 Difference]: With dead ends: 6098 [2020-10-29 13:32:42,595 INFO L226 Difference]: Without dead ends: 4053 [2020-10-29 13:32:42,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:32:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2020-10-29 13:32:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 4050. [2020-10-29 13:32:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4050 states. [2020-10-29 13:32:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 6280 transitions. [2020-10-29 13:32:43,098 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 6280 transitions. Word has length 116 [2020-10-29 13:32:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:43,098 INFO L481 AbstractCegarLoop]: Abstraction has 4050 states and 6280 transitions. [2020-10-29 13:32:43,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:32:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 6280 transitions. [2020-10-29 13:32:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 13:32:43,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:43,102 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] [2020-10-29 13:32:43,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:32:43,102 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:43,103 INFO L82 PathProgramCache]: Analyzing trace with hash -146252238, now seen corresponding path program 1 times [2020-10-29 13:32:43,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:43,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036145569] [2020-10-29 13:32:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:48,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:48,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 13:32:48,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:32:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:32:48,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:48,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:32:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:32:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:32:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:48,593 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:32:48,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:48,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:48,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:48,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:48,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:32:48,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:48,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:32:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:32:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:48,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036145569] [2020-10-29 13:32:48,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:48,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:32:48,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308699765] [2020-10-29 13:32:48,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:32:48,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:48,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:32:48,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:32:48,660 INFO L87 Difference]: Start difference. First operand 4050 states and 6280 transitions. Second operand 6 states. [2020-10-29 13:32:49,087 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:32:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:50,385 INFO L93 Difference]: Finished difference Result 8023 states and 12480 transitions. [2020-10-29 13:32:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:32:50,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-29 13:32:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:50,399 INFO L225 Difference]: With dead ends: 8023 [2020-10-29 13:32:50,399 INFO L226 Difference]: Without dead ends: 4050 [2020-10-29 13:32:50,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:32:50,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2020-10-29 13:32:50,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 4050. [2020-10-29 13:32:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4050 states. [2020-10-29 13:32:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 6231 transitions. [2020-10-29 13:32:50,870 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 6231 transitions. Word has length 117 [2020-10-29 13:32:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:50,870 INFO L481 AbstractCegarLoop]: Abstraction has 4050 states and 6231 transitions. [2020-10-29 13:32:50,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:32:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 6231 transitions. [2020-10-29 13:32:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 13:32:50,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:50,874 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] [2020-10-29 13:32:50,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:32:50,874 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2136995183, now seen corresponding path program 1 times [2020-10-29 13:32:50,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:50,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791352691] [2020-10-29 13:32:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:50,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:50,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:51,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:51,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:54,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:55,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:55,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 13:32:55,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:32:55,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:32:55,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:55,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:32:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:32:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 13:32:55,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:56,303 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:32:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:56,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:56,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:56,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:32:56,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:56,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:32:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:32:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:56,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791352691] [2020-10-29 13:32:56,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:56,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:32:56,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516019635] [2020-10-29 13:32:56,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:32:56,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:56,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:32:56,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:32:56,358 INFO L87 Difference]: Start difference. First operand 4050 states and 6231 transitions. Second operand 6 states. [2020-10-29 13:32:56,783 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:32:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:58,056 INFO L93 Difference]: Finished difference Result 8019 states and 12378 transitions. [2020-10-29 13:32:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:32:58,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-29 13:32:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:58,128 INFO L225 Difference]: With dead ends: 8019 [2020-10-29 13:32:58,128 INFO L226 Difference]: Without dead ends: 4050 [2020-10-29 13:32:58,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:32:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2020-10-29 13:32:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 4050. [2020-10-29 13:32:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4050 states. [2020-10-29 13:32:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 6182 transitions. [2020-10-29 13:32:58,551 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 6182 transitions. Word has length 118 [2020-10-29 13:32:58,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:58,552 INFO L481 AbstractCegarLoop]: Abstraction has 4050 states and 6182 transitions. [2020-10-29 13:32:58,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:32:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 6182 transitions. [2020-10-29 13:32:58,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 13:32:58,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:58,554 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] [2020-10-29 13:32:58,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:32:58,555 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:58,555 INFO L82 PathProgramCache]: Analyzing trace with hash 330355203, now seen corresponding path program 1 times [2020-10-29 13:32:58,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:58,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128811776] [2020-10-29 13:32:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:58,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:01,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:03,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:03,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 13:33:03,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:33:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:33:03,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:03,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:33:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:33:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:33:03,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:04,041 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:33:04,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:04,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:04,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:04,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:04,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 13:33:04,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:04,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:33:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:33:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:04,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128811776] [2020-10-29 13:33:04,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:04,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:33:04,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314061585] [2020-10-29 13:33:04,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:33:04,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:04,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:33:04,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:33:04,132 INFO L87 Difference]: Start difference. First operand 4050 states and 6182 transitions. Second operand 6 states. [2020-10-29 13:33:04,589 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:33:05,658 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 13:33:06,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:06,645 INFO L93 Difference]: Finished difference Result 11848 states and 18137 transitions. [2020-10-29 13:33:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:33:06,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-29 13:33:06,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:06,662 INFO L225 Difference]: With dead ends: 11848 [2020-10-29 13:33:06,663 INFO L226 Difference]: Without dead ends: 7871 [2020-10-29 13:33:06,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:33:06,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7871 states. [2020-10-29 13:33:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7871 to 7868. [2020-10-29 13:33:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7868 states. [2020-10-29 13:33:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7868 states to 7868 states and 11979 transitions. [2020-10-29 13:33:07,452 INFO L78 Accepts]: Start accepts. Automaton has 7868 states and 11979 transitions. Word has length 119 [2020-10-29 13:33:07,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:07,452 INFO L481 AbstractCegarLoop]: Abstraction has 7868 states and 11979 transitions. [2020-10-29 13:33:07,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:33:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 7868 states and 11979 transitions. [2020-10-29 13:33:07,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:33:07,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:07,455 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] [2020-10-29 13:33:07,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:33:07,455 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:07,455 INFO L82 PathProgramCache]: Analyzing trace with hash -409947119, now seen corresponding path program 1 times [2020-10-29 13:33:07,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:07,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031679396] [2020-10-29 13:33:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:07,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:07,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:08,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:12,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:12,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:33:12,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:33:12,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:33:12,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:12,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:12,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:33:12,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:33:12,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 13:33:12,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:12,939 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:33:12,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:12,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:12,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:12,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:33:12,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:12,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:33:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:33:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:13,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031679396] [2020-10-29 13:33:13,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:13,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:33:13,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491600150] [2020-10-29 13:33:13,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:33:13,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:13,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:33:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:33:13,005 INFO L87 Difference]: Start difference. First operand 7868 states and 11979 transitions. Second operand 6 states. [2020-10-29 13:33:13,461 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:33:14,778 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 13:33:16,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:16,518 INFO L93 Difference]: Finished difference Result 22966 states and 35001 transitions. [2020-10-29 13:33:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:33:16,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-29 13:33:16,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:16,551 INFO L225 Difference]: With dead ends: 22966 [2020-10-29 13:33:16,551 INFO L226 Difference]: Without dead ends: 15183 [2020-10-29 13:33:16,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:33:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15183 states. [2020-10-29 13:33:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15183 to 15180. [2020-10-29 13:33:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15180 states. [2020-10-29 13:33:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15180 states to 15180 states and 23010 transitions. [2020-10-29 13:33:18,137 INFO L78 Accepts]: Start accepts. Automaton has 15180 states and 23010 transitions. Word has length 120 [2020-10-29 13:33:18,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:18,137 INFO L481 AbstractCegarLoop]: Abstraction has 15180 states and 23010 transitions. [2020-10-29 13:33:18,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:33:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 15180 states and 23010 transitions. [2020-10-29 13:33:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:33:18,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:18,140 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] [2020-10-29 13:33:18,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:33:18,141 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:18,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:18,141 INFO L82 PathProgramCache]: Analyzing trace with hash 384647568, now seen corresponding path program 1 times [2020-10-29 13:33:18,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:18,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541590705] [2020-10-29 13:33:18,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:18,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:19,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:23,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:23,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:33:23,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:33:23,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:33:23,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:23,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:33:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:33:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 13:33:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:23,516 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-10-29 13:33:23,920 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:33:23,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:23,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:23,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:23,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:23,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:33:23,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:23,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:33:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:33:23,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:23,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541590705] [2020-10-29 13:33:23,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:23,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:33:23,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741608794] [2020-10-29 13:33:23,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:33:23,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:23,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:33:23,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:33:23,994 INFO L87 Difference]: Start difference. First operand 15180 states and 23010 transitions. Second operand 8 states. [2020-10-29 13:33:24,483 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-29 13:33:26,067 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:33:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:29,572 INFO L93 Difference]: Finished difference Result 37635 states and 57082 transitions. [2020-10-29 13:33:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:33:29,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-29 13:33:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:29,616 INFO L225 Difference]: With dead ends: 37635 [2020-10-29 13:33:29,616 INFO L226 Difference]: Without dead ends: 22591 [2020-10-29 13:33:29,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 13:33:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22591 states. [2020-10-29 13:33:32,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22591 to 15180. [2020-10-29 13:33:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15180 states. [2020-10-29 13:33:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15180 states to 15180 states and 23009 transitions. [2020-10-29 13:33:32,114 INFO L78 Accepts]: Start accepts. Automaton has 15180 states and 23009 transitions. Word has length 121 [2020-10-29 13:33:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:32,115 INFO L481 AbstractCegarLoop]: Abstraction has 15180 states and 23009 transitions. [2020-10-29 13:33:32,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:33:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 15180 states and 23009 transitions. [2020-10-29 13:33:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:33:32,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:32,119 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] [2020-10-29 13:33:32,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:33:32,119 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash 733317261, now seen corresponding path program 1 times [2020-10-29 13:33:32,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:32,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941669954] [2020-10-29 13:33:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:32,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:32,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:32,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:34,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:35,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:35,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:36,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:37,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:37,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:33:37,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:33:37,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:33:37,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:37,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:37,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:33:37,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:33:37,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 13:33:37,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:37,599 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:33:37,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:37,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:37,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:37,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:37,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:37,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:33:37,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:37,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:33:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:33:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:37,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941669954] [2020-10-29 13:33:37,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:37,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:33:37,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451677411] [2020-10-29 13:33:37,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:33:37,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:37,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:33:37,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:33:37,657 INFO L87 Difference]: Start difference. First operand 15180 states and 23009 transitions. Second operand 6 states. [2020-10-29 13:33:38,115 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 13:33:39,319 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:33:39,772 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 13:33:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:42,801 INFO L93 Difference]: Finished difference Result 27556 states and 41743 transitions. [2020-10-29 13:33:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:33:42,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-29 13:33:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:42,838 INFO L225 Difference]: With dead ends: 27556 [2020-10-29 13:33:42,838 INFO L226 Difference]: Without dead ends: 23921 [2020-10-29 13:33:42,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:33:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23921 states. [2020-10-29 13:33:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23921 to 21443. [2020-10-29 13:33:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21443 states. [2020-10-29 13:33:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21443 states to 21443 states and 32609 transitions. [2020-10-29 13:33:45,863 INFO L78 Accepts]: Start accepts. Automaton has 21443 states and 32609 transitions. Word has length 121 [2020-10-29 13:33:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:45,863 INFO L481 AbstractCegarLoop]: Abstraction has 21443 states and 32609 transitions. [2020-10-29 13:33:45,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:33:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 21443 states and 32609 transitions. [2020-10-29 13:33:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:33:45,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:45,868 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] [2020-10-29 13:33:45,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:33:45,869 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:45,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1771894471, now seen corresponding path program 1 times [2020-10-29 13:33:45,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:45,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136929272] [2020-10-29 13:33:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:47,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:48,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:50,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:50,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:50,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:50,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:50,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:33:50,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 13:33:50,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:33:50,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:50,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:33:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:33:50,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 13:33:50,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:51,319 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:33:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:51,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:51,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:51,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:51,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:33:51,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:51,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:33:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:33:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:51,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136929272] [2020-10-29 13:33:51,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:51,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:33:51,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619652157] [2020-10-29 13:33:51,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:33:51,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:51,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:33:51,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:33:51,378 INFO L87 Difference]: Start difference. First operand 21443 states and 32609 transitions. Second operand 5 states. [2020-10-29 13:33:51,814 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:33:52,865 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:33:58,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:58,384 INFO L93 Difference]: Finished difference Result 57161 states and 86709 transitions. [2020-10-29 13:33:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:33:58,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-29 13:33:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:58,436 INFO L225 Difference]: With dead ends: 57161 [2020-10-29 13:33:58,437 INFO L226 Difference]: Without dead ends: 36278 [2020-10-29 13:33:58,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:33:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36278 states. [2020-10-29 13:34:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36278 to 36275. [2020-10-29 13:34:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36275 states. [2020-10-29 13:34:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36275 states to 36275 states and 54625 transitions. [2020-10-29 13:34:04,016 INFO L78 Accepts]: Start accepts. Automaton has 36275 states and 54625 transitions. Word has length 122 [2020-10-29 13:34:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:34:04,016 INFO L481 AbstractCegarLoop]: Abstraction has 36275 states and 54625 transitions. [2020-10-29 13:34:04,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:34:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 36275 states and 54625 transitions. [2020-10-29 13:34:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:34:04,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:34:04,020 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] [2020-10-29 13:34:04,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:34:04,020 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:34:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:34:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash 37325795, now seen corresponding path program 1 times [2020-10-29 13:34:04,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:34:04,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892213064] [2020-10-29 13:34:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:34:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:04,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:04,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:04,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:09,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:09,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:34:09,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:34:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:34:09,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:09,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:34:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 13:34:09,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 13:34:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:09,485 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:34:09,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:34:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:09,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:09,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:09,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:34:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:09,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:34:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:34:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:09,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892213064] [2020-10-29 13:34:09,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:09,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:34:09,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199758865] [2020-10-29 13:34:09,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:34:09,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:09,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:34:09,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:34:09,546 INFO L87 Difference]: Start difference. First operand 36275 states and 54625 transitions. Second operand 6 states. [2020-10-29 13:34:10,000 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 13:34:11,200 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:34:11,665 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-29 13:34:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:34:18,090 INFO L93 Difference]: Finished difference Result 53328 states and 80091 transitions. [2020-10-29 13:34:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:34:18,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-29 13:34:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:34:18,138 INFO L225 Difference]: With dead ends: 53328 [2020-10-29 13:34:18,138 INFO L226 Difference]: Without dead ends: 45069 [2020-10-29 13:34:18,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:34:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45069 states. [2020-10-29 13:34:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45069 to 39919. [2020-10-29 13:34:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39919 states. [2020-10-29 13:34:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39919 states to 39919 states and 60165 transitions. [2020-10-29 13:34:24,126 INFO L78 Accepts]: Start accepts. Automaton has 39919 states and 60165 transitions. Word has length 122 [2020-10-29 13:34:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:34:24,127 INFO L481 AbstractCegarLoop]: Abstraction has 39919 states and 60165 transitions. [2020-10-29 13:34:24,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:34:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 39919 states and 60165 transitions. [2020-10-29 13:34:24,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:34:24,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:34:24,132 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] [2020-10-29 13:34:24,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:34:24,132 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:34:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:34:24,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1068912736, now seen corresponding path program 1 times [2020-10-29 13:34:24,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:34:24,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869409218] [2020-10-29 13:34:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:34:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:24,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:24,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:26,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:28,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:29,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:34:29,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:34:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:34:29,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:29,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:34:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:34:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 13:34:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:29,590 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:34:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:34:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:29,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:29,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:29,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:34:29,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:29,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:34:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:34:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:34:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:29,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869409218] [2020-10-29 13:34:29,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:29,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:34:29,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020554534] [2020-10-29 13:34:29,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:34:29,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:29,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:34:29,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:34:29,648 INFO L87 Difference]: Start difference. First operand 39919 states and 60165 transitions. Second operand 6 states. [2020-10-29 13:34:30,080 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-29 13:34:31,195 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:34:31,568 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 213