/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:14:09,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:14:09,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:14:09,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:14:09,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:14:09,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:14:09,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:14:09,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:14:09,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:14:09,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:14:09,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:14:09,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:14:09,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:14:09,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:14:09,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:14:09,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:14:09,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:14:09,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:14:09,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:14:09,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:14:09,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:14:09,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:14:09,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:14:09,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:14:09,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:14:09,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:14:09,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:14:09,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:14:09,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:14:09,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:14:09,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:14:09,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:14:09,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:14:09,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:14:09,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:14:09,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:14:09,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:14:09,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:14:09,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:14:09,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:14:09,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:14:09,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:14:09,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:14:09,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:14:09,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:14:09,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:14:09,898 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:14:09,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:14:09,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:14:09,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:14:09,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:14:09,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:14:09,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:14:09,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:14:09,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:14:09,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:14:09,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:14:09,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:14:09,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:14:09,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:14:09,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:14:09,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:14:09,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:14:09,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:14:09,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:14:09,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:14:09,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:14:09,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:14:09,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:14:09,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:14:09,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:14:09,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:14:10,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:14:10,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:14:10,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:14:10,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:14:10,370 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:14:10,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:14:10,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb816ad77/e508716b3b454eb5a238536aeeabfb5b/FLAG161a3d8f7 [2020-10-28 18:14:11,203 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:14:11,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:14:11,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb816ad77/e508716b3b454eb5a238536aeeabfb5b/FLAG161a3d8f7 [2020-10-28 18:14:11,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb816ad77/e508716b3b454eb5a238536aeeabfb5b [2020-10-28 18:14:11,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:14:11,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:14:11,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:14:11,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:14:11,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:14:11,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:14:11" (1/1) ... [2020-10-28 18:14:11,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4031dcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:11, skipping insertion in model container [2020-10-28 18:14:11,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:14:11" (1/1) ... [2020-10-28 18:14:11,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:14:11,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:14:12,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:14:12,077 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:14:12,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:14:12,312 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:14:12,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12 WrapperNode [2020-10-28 18:14:12,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:14:12,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:14:12,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:14:12,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:14:12,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12" (1/1) ... [2020-10-28 18:14:12,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12" (1/1) ... [2020-10-28 18:14:12,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12" (1/1) ... [2020-10-28 18:14:12,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12" (1/1) ... [2020-10-28 18:14:12,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12" (1/1) ... [2020-10-28 18:14:12,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12" (1/1) ... [2020-10-28 18:14:12,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12" (1/1) ... [2020-10-28 18:14:12,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:14:12,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:14:12,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:14:12,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:14:12,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:14:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:14:12,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:14:12,581 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:14:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:14:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:14:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:14:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:14:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:14:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:14:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:14:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:14:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:14:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:14:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:14:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:14:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:14:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:14:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:14:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:14:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:14:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:14:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:14:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:14:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:14:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:14:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:14:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:14:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:14:14,474 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:14:14,475 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:14:14,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:14:14 BoogieIcfgContainer [2020-10-28 18:14:14,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:14:14,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:14:14,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:14:14,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:14:14,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:14:11" (1/3) ... [2020-10-28 18:14:14,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a471a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:14:14, skipping insertion in model container [2020-10-28 18:14:14,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:12" (2/3) ... [2020-10-28 18:14:14,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a471a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:14:14, skipping insertion in model container [2020-10-28 18:14:14,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:14:14" (3/3) ... [2020-10-28 18:14:14,488 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:14:14,501 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:14:14,507 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:14:14,521 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:14:14,555 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:14:14,555 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:14:14,555 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:14:14,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:14:14,556 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:14:14,556 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:14:14,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:14:14,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:14:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states. [2020-10-28 18:14:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 18:14:14,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:14,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:14,609 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:14,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:14,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1270658696, now seen corresponding path program 1 times [2020-10-28 18:14:14,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:14,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783940113] [2020-10-28 18:14:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:15,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:20,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:20,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 18:14:20,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:14:20,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 18:14:20,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:20,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 18:14:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 18:14:20,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:14:20,925 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:14:20,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:20,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:20,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:20,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:20,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:20,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:14:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:20,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:21,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783940113] [2020-10-28 18:14:21,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:21,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:14:21,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005074238] [2020-10-28 18:14:21,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:14:21,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:21,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:14:21,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:21,089 INFO L87 Difference]: Start difference. First operand 321 states. Second operand 4 states. [2020-10-28 18:14:21,654 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 18:14:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:23,516 INFO L93 Difference]: Finished difference Result 647 states and 1128 transitions. [2020-10-28 18:14:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:14:23,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-28 18:14:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:23,547 INFO L225 Difference]: With dead ends: 647 [2020-10-28 18:14:23,547 INFO L226 Difference]: Without dead ends: 516 [2020-10-28 18:14:23,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-28 18:14:23,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 513. [2020-10-28 18:14:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-28 18:14:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 762 transitions. [2020-10-28 18:14:23,660 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 762 transitions. Word has length 151 [2020-10-28 18:14:23,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:23,663 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 762 transitions. [2020-10-28 18:14:23,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:14:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 762 transitions. [2020-10-28 18:14:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 18:14:23,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:23,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:23,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:14:23,677 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1027994380, now seen corresponding path program 1 times [2020-10-28 18:14:23,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:23,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772071718] [2020-10-28 18:14:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:28,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 18:14:28,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:14:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 18:14:28,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:28,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 18:14:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:29,227 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:14:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:29,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:29,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:29,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:29,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:14:29,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:29,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:29,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:29,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772071718] [2020-10-28 18:14:29,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:29,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:29,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309345129] [2020-10-28 18:14:29,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:29,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:29,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:29,389 INFO L87 Difference]: Start difference. First operand 513 states and 762 transitions. Second operand 5 states. [2020-10-28 18:14:31,613 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:14:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:32,643 INFO L93 Difference]: Finished difference Result 1476 states and 2186 transitions. [2020-10-28 18:14:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:32,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-28 18:14:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:32,650 INFO L225 Difference]: With dead ends: 1476 [2020-10-28 18:14:32,651 INFO L226 Difference]: Without dead ends: 988 [2020-10-28 18:14:32,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-10-28 18:14:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 985. [2020-10-28 18:14:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-10-28 18:14:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1449 transitions. [2020-10-28 18:14:32,725 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1449 transitions. Word has length 151 [2020-10-28 18:14:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:32,725 INFO L481 AbstractCegarLoop]: Abstraction has 985 states and 1449 transitions. [2020-10-28 18:14:32,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1449 transitions. [2020-10-28 18:14:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 18:14:32,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:32,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:32,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:14:32,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:32,732 INFO L82 PathProgramCache]: Analyzing trace with hash -671448548, now seen corresponding path program 1 times [2020-10-28 18:14:32,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:32,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391344815] [2020-10-28 18:14:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:32,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:33,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:34,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:37,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:37,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 18:14:37,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:14:37,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 18:14:37,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:37,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 18:14:37,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:38,300 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:14:38,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:38,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:38,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:38,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:38,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:14:38,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:38,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:38,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:38,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391344815] [2020-10-28 18:14:38,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:38,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:38,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808706716] [2020-10-28 18:14:38,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:38,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:38,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:38,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:38,419 INFO L87 Difference]: Start difference. First operand 985 states and 1449 transitions. Second operand 5 states. [2020-10-28 18:14:40,600 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:14:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:41,663 INFO L93 Difference]: Finished difference Result 2861 states and 4198 transitions. [2020-10-28 18:14:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:41,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-28 18:14:41,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:41,683 INFO L225 Difference]: With dead ends: 2861 [2020-10-28 18:14:41,683 INFO L226 Difference]: Without dead ends: 1904 [2020-10-28 18:14:41,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:41,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-28 18:14:41,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1901. [2020-10-28 18:14:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1901 states. [2020-10-28 18:14:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2767 transitions. [2020-10-28 18:14:41,824 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2767 transitions. Word has length 152 [2020-10-28 18:14:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:41,825 INFO L481 AbstractCegarLoop]: Abstraction has 1901 states and 2767 transitions. [2020-10-28 18:14:41,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2767 transitions. [2020-10-28 18:14:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 18:14:41,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:41,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:41,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:14:41,835 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:41,835 INFO L82 PathProgramCache]: Analyzing trace with hash 428596911, now seen corresponding path program 1 times [2020-10-28 18:14:41,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:41,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852198360] [2020-10-28 18:14:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:41,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:41,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:42,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:42,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:46,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:46,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:46,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 18:14:46,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:14:46,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 18:14:46,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:46,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:46,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:46,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:46,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 18:14:46,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:47,391 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:14:47,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:47,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:47,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:47,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:47,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:47,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852198360] [2020-10-28 18:14:47,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:47,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:47,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141940580] [2020-10-28 18:14:47,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:47,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:47,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:47,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:47,501 INFO L87 Difference]: Start difference. First operand 1901 states and 2767 transitions. Second operand 5 states. [2020-10-28 18:14:49,554 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:14:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:50,525 INFO L93 Difference]: Finished difference Result 5495 states and 7964 transitions. [2020-10-28 18:14:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:50,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-28 18:14:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:50,549 INFO L225 Difference]: With dead ends: 5495 [2020-10-28 18:14:50,549 INFO L226 Difference]: Without dead ends: 3654 [2020-10-28 18:14:50,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:50,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2020-10-28 18:14:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3651. [2020-10-28 18:14:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3651 states. [2020-10-28 18:14:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 5243 transitions. [2020-10-28 18:14:50,774 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 5243 transitions. Word has length 153 [2020-10-28 18:14:50,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:50,775 INFO L481 AbstractCegarLoop]: Abstraction has 3651 states and 5243 transitions. [2020-10-28 18:14:50,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 5243 transitions. [2020-10-28 18:14:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 18:14:50,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:50,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:14:50,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:14:50,783 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:50,784 INFO L82 PathProgramCache]: Analyzing trace with hash -201300736, now seen corresponding path program 1 times [2020-10-28 18:14:50,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:50,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038634515] [2020-10-28 18:14:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:50,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:50,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:52,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:52,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:55,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:55,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 18:14:55,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:14:55,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 18:14:55,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:55,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 18:14:55,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:56,312 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:14:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:56,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:56,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:56,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:14:56,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:56,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:56,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038634515] [2020-10-28 18:14:56,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:56,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:56,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087280575] [2020-10-28 18:14:56,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:56,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:56,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:56,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:56,450 INFO L87 Difference]: Start difference. First operand 3651 states and 5243 transitions. Second operand 5 states. [2020-10-28 18:14:58,820 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:14:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:59,989 INFO L93 Difference]: Finished difference Result 10163 states and 14636 transitions. [2020-10-28 18:14:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:59,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-28 18:14:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:00,023 INFO L225 Difference]: With dead ends: 10163 [2020-10-28 18:15:00,023 INFO L226 Difference]: Without dead ends: 7040 [2020-10-28 18:15:00,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7040 states. [2020-10-28 18:15:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7040 to 7037. [2020-10-28 18:15:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2020-10-28 18:15:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 9976 transitions. [2020-10-28 18:15:00,506 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 9976 transitions. Word has length 154 [2020-10-28 18:15:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:00,507 INFO L481 AbstractCegarLoop]: Abstraction has 7037 states and 9976 transitions. [2020-10-28 18:15:00,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:00,507 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 9976 transitions. [2020-10-28 18:15:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 18:15:00,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:00,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:15:00,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:15:00,521 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:00,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:00,521 INFO L82 PathProgramCache]: Analyzing trace with hash -729080016, now seen corresponding path program 1 times [2020-10-28 18:15:00,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:00,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481846945] [2020-10-28 18:15:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:00,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:00,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:04,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:05,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 18:15:05,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:15:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 18:15:05,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:05,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 18:15:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:06,041 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:15:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:06,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:06,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:06,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:06,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:15:06,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:06,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:06,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481846945] [2020-10-28 18:15:06,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:06,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:06,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770451654] [2020-10-28 18:15:06,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:06,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:06,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:06,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:06,139 INFO L87 Difference]: Start difference. First operand 7037 states and 9976 transitions. Second operand 5 states. [2020-10-28 18:15:08,792 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:15:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:10,071 INFO L93 Difference]: Finished difference Result 18605 states and 26334 transitions. [2020-10-28 18:15:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:15:10,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-28 18:15:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:10,131 INFO L225 Difference]: With dead ends: 18605 [2020-10-28 18:15:10,131 INFO L226 Difference]: Without dead ends: 12294 [2020-10-28 18:15:10,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12294 states. [2020-10-28 18:15:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12294 to 12291. [2020-10-28 18:15:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12291 states. [2020-10-28 18:15:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12291 states to 12291 states and 17100 transitions. [2020-10-28 18:15:11,127 INFO L78 Accepts]: Start accepts. Automaton has 12291 states and 17100 transitions. Word has length 155 [2020-10-28 18:15:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:11,128 INFO L481 AbstractCegarLoop]: Abstraction has 12291 states and 17100 transitions. [2020-10-28 18:15:11,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:11,128 INFO L276 IsEmpty]: Start isEmpty. Operand 12291 states and 17100 transitions. [2020-10-28 18:15:11,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 18:15:11,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:11,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:15:11,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:15:11,151 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:11,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:11,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1009196287, now seen corresponding path program 1 times [2020-10-28 18:15:11,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:11,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141114700] [2020-10-28 18:15:11,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:16,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:16,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 18:15:16,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:15:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:15:16,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:16,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:15:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 18:15:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:16,639 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:15:16,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:16,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:16,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:16,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:16,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:16,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:15:16,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:16,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:16,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141114700] [2020-10-28 18:15:16,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:16,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:16,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925102540] [2020-10-28 18:15:16,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:16,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:16,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:16,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:16,691 INFO L87 Difference]: Start difference. First operand 12291 states and 17100 transitions. Second operand 5 states. [2020-10-28 18:15:18,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:18,779 INFO L93 Difference]: Finished difference Result 21589 states and 29986 transitions. [2020-10-28 18:15:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:15:18,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 18:15:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:18,809 INFO L225 Difference]: With dead ends: 21589 [2020-10-28 18:15:18,810 INFO L226 Difference]: Without dead ends: 9406 [2020-10-28 18:15:18,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:15:18,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2020-10-28 18:15:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 9406. [2020-10-28 18:15:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9406 states. [2020-10-28 18:15:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9406 states to 9406 states and 13039 transitions. [2020-10-28 18:15:19,577 INFO L78 Accepts]: Start accepts. Automaton has 9406 states and 13039 transitions. Word has length 156 [2020-10-28 18:15:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:19,577 INFO L481 AbstractCegarLoop]: Abstraction has 9406 states and 13039 transitions. [2020-10-28 18:15:19,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 9406 states and 13039 transitions. [2020-10-28 18:15:19,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 18:15:19,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:19,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:15:19,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:15:19,596 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:19,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:19,596 INFO L82 PathProgramCache]: Analyzing trace with hash 785753543, now seen corresponding path program 1 times [2020-10-28 18:15:19,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:19,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445665368] [2020-10-28 18:15:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:19,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:22,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:24,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:24,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 18:15:24,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:15:24,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:15:24,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:24,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:15:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 18:15:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 18:15:24,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:25,014 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:15:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:25,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:25,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:25,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:25,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:15:25,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:25,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:25,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445665368] [2020-10-28 18:15:25,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:25,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:15:25,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003602047] [2020-10-28 18:15:25,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:15:25,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:25,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:15:25,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:15:25,107 INFO L87 Difference]: Start difference. First operand 9406 states and 13039 transitions. Second operand 4 states. [2020-10-28 18:15:25,495 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 18:15:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:27,737 INFO L93 Difference]: Finished difference Result 19876 states and 28724 transitions. [2020-10-28 18:15:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:15:27,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-28 18:15:27,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:27,776 INFO L225 Difference]: With dead ends: 19876 [2020-10-28 18:15:27,776 INFO L226 Difference]: Without dead ends: 16308 [2020-10-28 18:15:27,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:27,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16308 states. [2020-10-28 18:15:28,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16308 to 16305. [2020-10-28 18:15:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16305 states. [2020-10-28 18:15:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16305 states to 16305 states and 22912 transitions. [2020-10-28 18:15:28,977 INFO L78 Accepts]: Start accepts. Automaton has 16305 states and 22912 transitions. Word has length 163 [2020-10-28 18:15:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:28,977 INFO L481 AbstractCegarLoop]: Abstraction has 16305 states and 22912 transitions. [2020-10-28 18:15:28,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:15:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 16305 states and 22912 transitions. [2020-10-28 18:15:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 18:15:29,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:29,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:15:29,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:15:29,003 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:29,004 INFO L82 PathProgramCache]: Analyzing trace with hash -801912671, now seen corresponding path program 1 times [2020-10-28 18:15:29,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:29,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316170852] [2020-10-28 18:15:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:29,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:32,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:34,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:34,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 18:15:34,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:15:34,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:15:34,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:34,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:34,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:34,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 18:15:34,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 18:15:34,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:34,450 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:15:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:34,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:34,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:34,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:34,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:15:34,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:34,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:34,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:34,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:34,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316170852] [2020-10-28 18:15:34,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:34,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:34,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231476919] [2020-10-28 18:15:34,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:34,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:34,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:34,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:34,514 INFO L87 Difference]: Start difference. First operand 16305 states and 22912 transitions. Second operand 5 states. [2020-10-28 18:15:34,895 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 18:15:37,432 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:15:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:39,478 INFO L93 Difference]: Finished difference Result 46534 states and 68242 transitions. [2020-10-28 18:15:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:15:39,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 18:15:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:39,539 INFO L225 Difference]: With dead ends: 46534 [2020-10-28 18:15:39,539 INFO L226 Difference]: Without dead ends: 38687 [2020-10-28 18:15:39,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:39,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38687 states. [2020-10-28 18:15:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38687 to 38681. [2020-10-28 18:15:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38681 states. [2020-10-28 18:15:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38681 states to 38681 states and 55486 transitions. [2020-10-28 18:15:42,344 INFO L78 Accepts]: Start accepts. Automaton has 38681 states and 55486 transitions. Word has length 163 [2020-10-28 18:15:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:42,344 INFO L481 AbstractCegarLoop]: Abstraction has 38681 states and 55486 transitions. [2020-10-28 18:15:42,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 38681 states and 55486 transitions. [2020-10-28 18:15:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 18:15:42,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:42,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:15:42,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:15:42,383 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:42,383 INFO L82 PathProgramCache]: Analyzing trace with hash 499120420, now seen corresponding path program 1 times [2020-10-28 18:15:42,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:42,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819595267] [2020-10-28 18:15:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:42,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:42,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:44,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:47,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:47,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 18:15:47,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:15:47,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:15:47,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:47,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:47,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:47,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:47,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 18:15:47,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:47,881 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:15:47,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:47,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:47,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:47,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:47,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:15:47,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:47,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:47,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:47,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819595267] [2020-10-28 18:15:47,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:47,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:47,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653044602] [2020-10-28 18:15:47,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:47,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:47,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:47,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:47,960 INFO L87 Difference]: Start difference. First operand 38681 states and 55486 transitions. Second operand 5 states. [2020-10-28 18:15:51,630 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:15:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:54,824 INFO L93 Difference]: Finished difference Result 96104 states and 137460 transitions. [2020-10-28 18:15:54,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:15:54,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 18:15:54,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:54,924 INFO L225 Difference]: With dead ends: 96104 [2020-10-28 18:15:54,924 INFO L226 Difference]: Without dead ends: 58043 [2020-10-28 18:15:54,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58043 states. [2020-10-28 18:15:59,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58043 to 58040. [2020-10-28 18:15:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58040 states. [2020-10-28 18:16:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58040 states to 58040 states and 81723 transitions. [2020-10-28 18:16:00,035 INFO L78 Accepts]: Start accepts. Automaton has 58040 states and 81723 transitions. Word has length 163 [2020-10-28 18:16:00,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:00,035 INFO L481 AbstractCegarLoop]: Abstraction has 58040 states and 81723 transitions. [2020-10-28 18:16:00,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 58040 states and 81723 transitions. [2020-10-28 18:16:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 18:16:00,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:00,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:16:00,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:16:00,070 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:00,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1902131495, now seen corresponding path program 1 times [2020-10-28 18:16:00,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:00,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461543530] [2020-10-28 18:16:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:00,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:05,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:05,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 18:16:05,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:16:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:16:05,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:05,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:16:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 18:16:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:05,542 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:16:05,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:05,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:05,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:05,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:16:05,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:05,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:05,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:05,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461543530] [2020-10-28 18:16:05,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:05,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:05,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770667539] [2020-10-28 18:16:05,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:16:05,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:05,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:16:05,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:05,672 INFO L87 Difference]: Start difference. First operand 58040 states and 81723 transitions. Second operand 5 states. [2020-10-28 18:16:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:10,873 INFO L93 Difference]: Finished difference Result 109368 states and 154062 transitions. [2020-10-28 18:16:10,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:16:10,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-28 18:16:10,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:10,941 INFO L225 Difference]: With dead ends: 109368 [2020-10-28 18:16:10,941 INFO L226 Difference]: Without dead ends: 51546 [2020-10-28 18:16:10,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:16:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51546 states. [2020-10-28 18:16:14,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51546 to 51546. [2020-10-28 18:16:14,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51546 states. [2020-10-28 18:16:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51546 states to 51546 states and 72597 transitions. [2020-10-28 18:16:14,990 INFO L78 Accepts]: Start accepts. Automaton has 51546 states and 72597 transitions. Word has length 165 [2020-10-28 18:16:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:14,990 INFO L481 AbstractCegarLoop]: Abstraction has 51546 states and 72597 transitions. [2020-10-28 18:16:14,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 51546 states and 72597 transitions. [2020-10-28 18:16:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 18:16:15,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:15,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:16:15,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:16:15,169 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:15,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:15,172 INFO L82 PathProgramCache]: Analyzing trace with hash 364436323, now seen corresponding path program 1 times [2020-10-28 18:16:15,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:15,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905788204] [2020-10-28 18:16:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:20,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:20,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 18:16:20,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:16:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:16:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:20,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:16:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 18:16:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 18:16:20,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:16:20,583 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:16:20,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:20,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:20,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:20,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:20,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:20,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905788204] [2020-10-28 18:16:20,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:20,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:16:20,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870215297] [2020-10-28 18:16:20,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:16:20,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:20,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:16:20,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:16:20,642 INFO L87 Difference]: Start difference. First operand 51546 states and 72597 transitions. Second operand 4 states. [2020-10-28 18:16:24,949 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 18:16:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:29,385 INFO L93 Difference]: Finished difference Result 142952 states and 203385 transitions. [2020-10-28 18:16:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:16:29,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-28 18:16:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:29,507 INFO L225 Difference]: With dead ends: 142952 [2020-10-28 18:16:29,507 INFO L226 Difference]: Without dead ends: 98371 [2020-10-28 18:16:29,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98371 states. [2020-10-28 18:16:36,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98371 to 98368. [2020-10-28 18:16:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98368 states. [2020-10-28 18:16:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98368 states to 98368 states and 138199 transitions. [2020-10-28 18:16:37,106 INFO L78 Accepts]: Start accepts. Automaton has 98368 states and 138199 transitions. Word has length 171 [2020-10-28 18:16:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:37,106 INFO L481 AbstractCegarLoop]: Abstraction has 98368 states and 138199 transitions. [2020-10-28 18:16:37,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:16:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 98368 states and 138199 transitions. [2020-10-28 18:16:37,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 18:16:37,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:37,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:16:37,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:16:37,166 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:37,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1022166622, now seen corresponding path program 1 times [2020-10-28 18:16:37,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:37,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480022847] [2020-10-28 18:16:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:37,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:37,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:37,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:37,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:37,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:42,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:42,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 18:16:42,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:16:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:16:42,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:42,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 18:16:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:16:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:42,627 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:16:42,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:42,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:42,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:42,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:42,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:42,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:16:42,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:42,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:42,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:42,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:42,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:42,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:42,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480022847] [2020-10-28 18:16:42,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:42,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:42,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137312627] [2020-10-28 18:16:42,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:16:42,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:42,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:16:42,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:42,674 INFO L87 Difference]: Start difference. First operand 98368 states and 138199 transitions. Second operand 5 states. [2020-10-28 18:16:49,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:49,831 INFO L93 Difference]: Finished difference Result 172927 states and 242886 transitions. [2020-10-28 18:16:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:16:49,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 18:16:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:49,931 INFO L225 Difference]: With dead ends: 172927 [2020-10-28 18:16:49,931 INFO L226 Difference]: Without dead ends: 74636 [2020-10-28 18:16:49,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:16:50,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74636 states. [2020-10-28 18:16:55,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74636 to 74636. [2020-10-28 18:16:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74636 states. [2020-10-28 18:16:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74636 states to 74636 states and 104788 transitions. [2020-10-28 18:16:55,557 INFO L78 Accepts]: Start accepts. Automaton has 74636 states and 104788 transitions. Word has length 171 [2020-10-28 18:16:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:55,557 INFO L481 AbstractCegarLoop]: Abstraction has 74636 states and 104788 transitions. [2020-10-28 18:16:55,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 74636 states and 104788 transitions. [2020-10-28 18:16:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 18:16:55,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:55,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:16:55,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:16:55,591 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:55,592 INFO L82 PathProgramCache]: Analyzing trace with hash 87776042, now seen corresponding path program 1 times [2020-10-28 18:16:55,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:55,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415783086] [2020-10-28 18:16:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:55,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:55,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:57,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:00,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:00,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 18:17:00,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:17:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:17:00,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:00,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:17:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:17:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 18:17:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:01,042 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:17:01,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:17:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:17:01,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:17:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:17:01,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415783086] [2020-10-28 18:17:01,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:17:01,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:17:01,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574667595] [2020-10-28 18:17:01,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:17:01,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:17:01,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:17:01,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:17:01,103 INFO L87 Difference]: Start difference. First operand 74636 states and 104788 transitions. Second operand 5 states. [2020-10-28 18:17:01,523 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 18:17:09,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:17:09,724 INFO L93 Difference]: Finished difference Result 131787 states and 184926 transitions. [2020-10-28 18:17:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:17:09,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-28 18:17:09,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:17:09,814 INFO L225 Difference]: With dead ends: 131787 [2020-10-28 18:17:09,815 INFO L226 Difference]: Without dead ends: 74627 [2020-10-28 18:17:09,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:17:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74627 states. [2020-10-28 18:17:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74627 to 74624. [2020-10-28 18:17:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74624 states. [2020-10-28 18:17:15,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74624 states to 74624 states and 104315 transitions. [2020-10-28 18:17:15,510 INFO L78 Accepts]: Start accepts. Automaton has 74624 states and 104315 transitions. Word has length 178 [2020-10-28 18:17:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:17:15,510 INFO L481 AbstractCegarLoop]: Abstraction has 74624 states and 104315 transitions. [2020-10-28 18:17:15,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:17:15,511 INFO L276 IsEmpty]: Start isEmpty. Operand 74624 states and 104315 transitions. [2020-10-28 18:17:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 18:17:15,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:17:15,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:17:15,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:17:15,545 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:17:15,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:17:15,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1732230900, now seen corresponding path program 1 times [2020-10-28 18:17:15,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:17:15,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482163632] [2020-10-28 18:17:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:17:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:17:15,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:15,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:15,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:15,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:19,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:20,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:20,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 18:17:20,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:17:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:17:20,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:20,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:17:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 18:17:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:17:20,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:20,976 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:17:20,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:17:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:17:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:20,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:17:20,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:17:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:17:20,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:20,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:17:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:17:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:17:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:17:21,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482163632] [2020-10-28 18:17:21,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:17:21,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:17:21,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61509346] [2020-10-28 18:17:21,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:17:21,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:17:21,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:17:21,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:17:21,022 INFO L87 Difference]: Start difference. First operand 74624 states and 104315 transitions. Second operand 5 states. [2020-10-28 18:17:21,403 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:17:28,007 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 18:17:38,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:17:38,136 INFO L93 Difference]: Finished difference Result 252080 states and 360156 transitions. [2020-10-28 18:17:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:17:38,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-28 18:17:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted.