/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:03:59,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:03:59,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:03:59,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:03:59,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:03:59,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:03:59,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:03:59,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:03:59,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:03:59,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:03:59,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:03:59,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:03:59,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:03:59,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:03:59,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:03:59,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:03:59,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:03:59,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:03:59,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:03:59,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:03:59,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:03:59,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:03:59,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:03:59,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:03:59,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:03:59,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:03:59,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:03:59,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:03:59,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:03:59,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:03:59,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:03:59,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:03:59,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:03:59,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:03:59,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:03:59,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:03:59,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:03:59,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:03:59,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:03:59,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:03:59,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:03:59,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:03:59,244 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:03:59,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:03:59,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:03:59,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:03:59,249 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:03:59,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:03:59,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:03:59,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:03:59,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:03:59,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:03:59,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:03:59,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:03:59,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:03:59,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:03:59,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:03:59,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:03:59,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:03:59,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:03:59,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:03:59,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:03:59,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:03:59,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:03:59,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:03:59,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:03:59,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:03:59,256 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:03:59,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:03:59,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:03:59,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:03:59,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:03:59,666 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:03:59,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 08:03:59,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d8319322/8c7211000bc4430781a46898e78727a1/FLAG0041e6cc1 [2020-12-22 08:04:00,562 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:04:00,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 08:04:00,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d8319322/8c7211000bc4430781a46898e78727a1/FLAG0041e6cc1 [2020-12-22 08:04:00,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d8319322/8c7211000bc4430781a46898e78727a1 [2020-12-22 08:04:00,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:04:00,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:04:00,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:04:00,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:04:00,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:04:00,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:04:00" (1/1) ... [2020-12-22 08:04:00,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f08c8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:00, skipping insertion in model container [2020-12-22 08:04:00,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:04:00" (1/1) ... [2020-12-22 08:04:00,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:04:00,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:04:01,162 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13762,13775] [2020-12-22 08:04:01,189 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14822,14835] [2020-12-22 08:04:01,303 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26128,26141] [2020-12-22 08:04:01,314 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26775,26788] [2020-12-22 08:04:01,328 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28008,28021] [2020-12-22 08:04:01,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:04:01,380 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:04:01,584 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13762,13775] [2020-12-22 08:04:01,593 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14822,14835] [2020-12-22 08:04:01,659 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26128,26141] [2020-12-22 08:04:01,671 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26775,26788] [2020-12-22 08:04:01,683 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28008,28021] [2020-12-22 08:04:01,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:04:01,752 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:04:01,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01 WrapperNode [2020-12-22 08:04:01,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:04:01,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:04:01,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:04:01,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:04:01,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... [2020-12-22 08:04:01,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... [2020-12-22 08:04:01,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:04:01,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:04:01,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:04:01,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:04:01,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... [2020-12-22 08:04:01,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... [2020-12-22 08:04:01,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... [2020-12-22 08:04:01,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... [2020-12-22 08:04:01,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... [2020-12-22 08:04:01,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... [2020-12-22 08:04:01,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... [2020-12-22 08:04:01,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:04:01,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:04:01,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:04:01,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:04:01,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 08:04:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:04:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:04:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:04:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:04:04,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:04:04,018 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:04:04,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:04:04 BoogieIcfgContainer [2020-12-22 08:04:04,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:04:04,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:04:04,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:04:04,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:04:04,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:04:00" (1/3) ... [2020-12-22 08:04:04,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35575401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:04:04, skipping insertion in model container [2020-12-22 08:04:04,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:04:01" (2/3) ... [2020-12-22 08:04:04,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35575401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:04:04, skipping insertion in model container [2020-12-22 08:04:04,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:04:04" (3/3) ... [2020-12-22 08:04:04,029 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 08:04:04,035 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:04:04,041 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 08:04:04,059 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 08:04:04,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:04:04,090 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:04:04,090 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:04:04,090 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:04:04,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:04:04,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:04:04,091 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:04:04,091 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:04:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states. [2020-12-22 08:04:04,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 08:04:04,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:04,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:04:04,133 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1203570768, now seen corresponding path program 1 times [2020-12-22 08:04:04,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:04,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400553364] [2020-12-22 08:04:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:04,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400553364] [2020-12-22 08:04:04,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:04,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:04:04,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973317054] [2020-12-22 08:04:05,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:04:05,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:05,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:04:05,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:04:05,023 INFO L87 Difference]: Start difference. First operand 377 states. Second operand 4 states. [2020-12-22 08:04:05,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:05,265 INFO L93 Difference]: Finished difference Result 1100 states and 1983 transitions. [2020-12-22 08:04:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:04:05,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-12-22 08:04:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:05,289 INFO L225 Difference]: With dead ends: 1100 [2020-12-22 08:04:05,290 INFO L226 Difference]: Without dead ends: 726 [2020-12-22 08:04:05,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:04:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-12-22 08:04:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 701. [2020-12-22 08:04:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-12-22 08:04:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1004 transitions. [2020-12-22 08:04:05,424 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1004 transitions. Word has length 139 [2020-12-22 08:04:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:05,424 INFO L481 AbstractCegarLoop]: Abstraction has 701 states and 1004 transitions. [2020-12-22 08:04:05,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:04:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1004 transitions. [2020-12-22 08:04:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 08:04:05,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:05,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:04:05,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:04:05,438 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:05,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:05,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1141139268, now seen corresponding path program 1 times [2020-12-22 08:04:05,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:05,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91593711] [2020-12-22 08:04:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:05,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91593711] [2020-12-22 08:04:05,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:05,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:04:05,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661354459] [2020-12-22 08:04:05,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:04:05,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:05,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:04:05,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:05,648 INFO L87 Difference]: Start difference. First operand 701 states and 1004 transitions. Second operand 3 states. [2020-12-22 08:04:05,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:05,751 INFO L93 Difference]: Finished difference Result 2065 states and 2950 transitions. [2020-12-22 08:04:05,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:04:05,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2020-12-22 08:04:05,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:05,760 INFO L225 Difference]: With dead ends: 2065 [2020-12-22 08:04:05,761 INFO L226 Difference]: Without dead ends: 1392 [2020-12-22 08:04:05,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2020-12-22 08:04:05,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 703. [2020-12-22 08:04:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-12-22 08:04:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1006 transitions. [2020-12-22 08:04:05,838 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1006 transitions. Word has length 140 [2020-12-22 08:04:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:05,838 INFO L481 AbstractCegarLoop]: Abstraction has 703 states and 1006 transitions. [2020-12-22 08:04:05,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:04:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1006 transitions. [2020-12-22 08:04:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 08:04:05,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:05,841 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] [2020-12-22 08:04:05,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:04:05,842 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:05,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1084924930, now seen corresponding path program 1 times [2020-12-22 08:04:05,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:05,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088782921] [2020-12-22 08:04:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:05,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088782921] [2020-12-22 08:04:05,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:05,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:04:05,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605957573] [2020-12-22 08:04:05,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:04:05,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:05,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:04:05,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:05,967 INFO L87 Difference]: Start difference. First operand 703 states and 1006 transitions. Second operand 3 states. [2020-12-22 08:04:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:06,111 INFO L93 Difference]: Finished difference Result 1889 states and 2711 transitions. [2020-12-22 08:04:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:04:06,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-12-22 08:04:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:06,119 INFO L225 Difference]: With dead ends: 1889 [2020-12-22 08:04:06,120 INFO L226 Difference]: Without dead ends: 1364 [2020-12-22 08:04:06,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-12-22 08:04:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1339. [2020-12-22 08:04:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-12-22 08:04:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1907 transitions. [2020-12-22 08:04:06,196 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1907 transitions. Word has length 141 [2020-12-22 08:04:06,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:06,196 INFO L481 AbstractCegarLoop]: Abstraction has 1339 states and 1907 transitions. [2020-12-22 08:04:06,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:04:06,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1907 transitions. [2020-12-22 08:04:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 08:04:06,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:06,200 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] [2020-12-22 08:04:06,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:04:06,200 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash -980453119, now seen corresponding path program 1 times [2020-12-22 08:04:06,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:06,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602408361] [2020-12-22 08:04:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:06,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602408361] [2020-12-22 08:04:06,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:06,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:04:06,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160985983] [2020-12-22 08:04:06,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:04:06,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:06,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:04:06,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:04:06,563 INFO L87 Difference]: Start difference. First operand 1339 states and 1907 transitions. Second operand 5 states. [2020-12-22 08:04:06,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:06,873 INFO L93 Difference]: Finished difference Result 3750 states and 5334 transitions. [2020-12-22 08:04:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:04:06,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-12-22 08:04:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:06,890 INFO L225 Difference]: With dead ends: 3750 [2020-12-22 08:04:06,890 INFO L226 Difference]: Without dead ends: 2425 [2020-12-22 08:04:06,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:04:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-12-22 08:04:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2403. [2020-12-22 08:04:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-12-22 08:04:07,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3389 transitions. [2020-12-22 08:04:07,073 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3389 transitions. Word has length 141 [2020-12-22 08:04:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:07,073 INFO L481 AbstractCegarLoop]: Abstraction has 2403 states and 3389 transitions. [2020-12-22 08:04:07,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:04:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3389 transitions. [2020-12-22 08:04:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 08:04:07,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:07,079 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] [2020-12-22 08:04:07,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:04:07,080 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:07,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1926899985, now seen corresponding path program 1 times [2020-12-22 08:04:07,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:07,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149855339] [2020-12-22 08:04:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:07,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149855339] [2020-12-22 08:04:07,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:07,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:04:07,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058383181] [2020-12-22 08:04:07,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:04:07,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:07,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:04:07,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:04:07,345 INFO L87 Difference]: Start difference. First operand 2403 states and 3389 transitions. Second operand 4 states. [2020-12-22 08:04:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:07,847 INFO L93 Difference]: Finished difference Result 7000 states and 9834 transitions. [2020-12-22 08:04:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:04:07,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-12-22 08:04:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:07,870 INFO L225 Difference]: With dead ends: 7000 [2020-12-22 08:04:07,871 INFO L226 Difference]: Without dead ends: 4653 [2020-12-22 08:04:07,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:04:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2020-12-22 08:04:08,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4626. [2020-12-22 08:04:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4626 states. [2020-12-22 08:04:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 6451 transitions. [2020-12-22 08:04:08,209 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 6451 transitions. Word has length 141 [2020-12-22 08:04:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:08,209 INFO L481 AbstractCegarLoop]: Abstraction has 4626 states and 6451 transitions. [2020-12-22 08:04:08,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:04:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 6451 transitions. [2020-12-22 08:04:08,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 08:04:08,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:08,217 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] [2020-12-22 08:04:08,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:04:08,218 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:08,218 INFO L82 PathProgramCache]: Analyzing trace with hash 349588475, now seen corresponding path program 1 times [2020-12-22 08:04:08,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:08,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086687213] [2020-12-22 08:04:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:08,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086687213] [2020-12-22 08:04:08,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:08,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:04:08,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094173493] [2020-12-22 08:04:08,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:04:08,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:08,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:04:08,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:08,292 INFO L87 Difference]: Start difference. First operand 4626 states and 6451 transitions. Second operand 3 states. [2020-12-22 08:04:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:08,810 INFO L93 Difference]: Finished difference Result 13726 states and 19120 transitions. [2020-12-22 08:04:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:04:08,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 08:04:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:08,857 INFO L225 Difference]: With dead ends: 13726 [2020-12-22 08:04:08,857 INFO L226 Difference]: Without dead ends: 9191 [2020-12-22 08:04:08,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2020-12-22 08:04:09,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 4636. [2020-12-22 08:04:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4636 states. [2020-12-22 08:04:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 6461 transitions. [2020-12-22 08:04:09,271 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 6461 transitions. Word has length 142 [2020-12-22 08:04:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:09,272 INFO L481 AbstractCegarLoop]: Abstraction has 4636 states and 6461 transitions. [2020-12-22 08:04:09,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:04:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 6461 transitions. [2020-12-22 08:04:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 08:04:09,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:09,286 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] [2020-12-22 08:04:09,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:04:09,292 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash -88637170, now seen corresponding path program 1 times [2020-12-22 08:04:09,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:09,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124585812] [2020-12-22 08:04:09,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:09,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124585812] [2020-12-22 08:04:09,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:09,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:04:09,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115315075] [2020-12-22 08:04:09,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:04:09,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:09,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:04:09,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:04:09,582 INFO L87 Difference]: Start difference. First operand 4636 states and 6461 transitions. Second operand 4 states. [2020-12-22 08:04:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:10,228 INFO L93 Difference]: Finished difference Result 13426 states and 18670 transitions. [2020-12-22 08:04:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:04:10,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-12-22 08:04:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:10,286 INFO L225 Difference]: With dead ends: 13426 [2020-12-22 08:04:10,287 INFO L226 Difference]: Without dead ends: 8891 [2020-12-22 08:04:10,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:04:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8891 states. [2020-12-22 08:04:10,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8891 to 8864. [2020-12-22 08:04:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8864 states. [2020-12-22 08:04:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 12219 transitions. [2020-12-22 08:04:10,942 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 12219 transitions. Word has length 143 [2020-12-22 08:04:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:10,943 INFO L481 AbstractCegarLoop]: Abstraction has 8864 states and 12219 transitions. [2020-12-22 08:04:10,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:04:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 12219 transitions. [2020-12-22 08:04:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 08:04:10,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:10,960 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] [2020-12-22 08:04:10,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:04:10,960 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:10,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash -845151558, now seen corresponding path program 1 times [2020-12-22 08:04:10,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:10,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381360400] [2020-12-22 08:04:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:11,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381360400] [2020-12-22 08:04:11,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:11,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:04:11,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962757172] [2020-12-22 08:04:11,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:04:11,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:11,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:04:11,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:11,029 INFO L87 Difference]: Start difference. First operand 8864 states and 12219 transitions. Second operand 3 states. [2020-12-22 08:04:12,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:12,068 INFO L93 Difference]: Finished difference Result 25440 states and 35201 transitions. [2020-12-22 08:04:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:04:12,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-12-22 08:04:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:12,109 INFO L225 Difference]: With dead ends: 25440 [2020-12-22 08:04:12,109 INFO L226 Difference]: Without dead ends: 17451 [2020-12-22 08:04:12,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:12,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17451 states. [2020-12-22 08:04:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17451 to 8884. [2020-12-22 08:04:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8884 states. [2020-12-22 08:04:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8884 states to 8884 states and 12239 transitions. [2020-12-22 08:04:12,834 INFO L78 Accepts]: Start accepts. Automaton has 8884 states and 12239 transitions. Word has length 144 [2020-12-22 08:04:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:12,834 INFO L481 AbstractCegarLoop]: Abstraction has 8884 states and 12239 transitions. [2020-12-22 08:04:12,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:04:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8884 states and 12239 transitions. [2020-12-22 08:04:12,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 08:04:12,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:12,849 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] [2020-12-22 08:04:12,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:04:12,849 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:12,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:12,850 INFO L82 PathProgramCache]: Analyzing trace with hash -319371603, now seen corresponding path program 1 times [2020-12-22 08:04:12,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:12,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436272143] [2020-12-22 08:04:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:13,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436272143] [2020-12-22 08:04:13,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:13,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:04:13,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299030815] [2020-12-22 08:04:13,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:04:13,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:13,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:04:13,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:04:13,004 INFO L87 Difference]: Start difference. First operand 8884 states and 12239 transitions. Second operand 4 states. [2020-12-22 08:04:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:13,485 INFO L93 Difference]: Finished difference Result 14105 states and 19475 transitions. [2020-12-22 08:04:13,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:04:13,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-22 08:04:13,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:13,497 INFO L225 Difference]: With dead ends: 14105 [2020-12-22 08:04:13,497 INFO L226 Difference]: Without dead ends: 5741 [2020-12-22 08:04:13,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:04:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2020-12-22 08:04:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 5741. [2020-12-22 08:04:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5741 states. [2020-12-22 08:04:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 7869 transitions. [2020-12-22 08:04:13,893 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 7869 transitions. Word has length 145 [2020-12-22 08:04:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:13,894 INFO L481 AbstractCegarLoop]: Abstraction has 5741 states and 7869 transitions. [2020-12-22 08:04:13,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:04:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 7869 transitions. [2020-12-22 08:04:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 08:04:13,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:13,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:04:13,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:04:13,903 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:13,904 INFO L82 PathProgramCache]: Analyzing trace with hash -14967049, now seen corresponding path program 1 times [2020-12-22 08:04:13,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:13,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606199145] [2020-12-22 08:04:13,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:14,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606199145] [2020-12-22 08:04:14,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:14,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:04:14,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20919814] [2020-12-22 08:04:14,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:04:14,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:14,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:04:14,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:14,059 INFO L87 Difference]: Start difference. First operand 5741 states and 7869 transitions. Second operand 3 states. [2020-12-22 08:04:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:14,766 INFO L93 Difference]: Finished difference Result 15336 states and 21177 transitions. [2020-12-22 08:04:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:04:14,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 08:04:14,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:14,788 INFO L225 Difference]: With dead ends: 15336 [2020-12-22 08:04:14,788 INFO L226 Difference]: Without dead ends: 10681 [2020-12-22 08:04:14,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10681 states. [2020-12-22 08:04:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10681 to 10661. [2020-12-22 08:04:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10661 states. [2020-12-22 08:04:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10661 states to 10661 states and 14469 transitions. [2020-12-22 08:04:15,681 INFO L78 Accepts]: Start accepts. Automaton has 10661 states and 14469 transitions. Word has length 153 [2020-12-22 08:04:15,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:15,682 INFO L481 AbstractCegarLoop]: Abstraction has 10661 states and 14469 transitions. [2020-12-22 08:04:15,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:04:15,682 INFO L276 IsEmpty]: Start isEmpty. Operand 10661 states and 14469 transitions. [2020-12-22 08:04:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 08:04:15,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:15,699 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] [2020-12-22 08:04:15,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:04:15,700 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1413245894, now seen corresponding path program 1 times [2020-12-22 08:04:15,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:15,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529188356] [2020-12-22 08:04:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:15,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529188356] [2020-12-22 08:04:15,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:15,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:04:15,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326564127] [2020-12-22 08:04:15,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:04:15,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:15,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:04:15,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:15,816 INFO L87 Difference]: Start difference. First operand 10661 states and 14469 transitions. Second operand 3 states. [2020-12-22 08:04:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:17,213 INFO L93 Difference]: Finished difference Result 28545 states and 39231 transitions. [2020-12-22 08:04:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:04:17,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 08:04:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:17,258 INFO L225 Difference]: With dead ends: 28545 [2020-12-22 08:04:17,258 INFO L226 Difference]: Without dead ends: 20276 [2020-12-22 08:04:17,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:17,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20276 states. [2020-12-22 08:04:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20276 to 20243. [2020-12-22 08:04:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20243 states. [2020-12-22 08:04:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20243 states to 20243 states and 27471 transitions. [2020-12-22 08:04:18,463 INFO L78 Accepts]: Start accepts. Automaton has 20243 states and 27471 transitions. Word has length 153 [2020-12-22 08:04:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:18,464 INFO L481 AbstractCegarLoop]: Abstraction has 20243 states and 27471 transitions. [2020-12-22 08:04:18,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:04:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 20243 states and 27471 transitions. [2020-12-22 08:04:18,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 08:04:18,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:18,486 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] [2020-12-22 08:04:18,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:04:18,487 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:18,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:18,488 INFO L82 PathProgramCache]: Analyzing trace with hash 424086943, now seen corresponding path program 1 times [2020-12-22 08:04:18,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:18,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608273396] [2020-12-22 08:04:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:18,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608273396] [2020-12-22 08:04:18,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:18,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:04:18,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693606041] [2020-12-22 08:04:18,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:04:18,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:18,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:04:18,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:04:18,692 INFO L87 Difference]: Start difference. First operand 20243 states and 27471 transitions. Second operand 4 states. [2020-12-22 08:04:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:20,532 INFO L93 Difference]: Finished difference Result 38202 states and 53840 transitions. [2020-12-22 08:04:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:04:20,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-12-22 08:04:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:20,602 INFO L225 Difference]: With dead ends: 38202 [2020-12-22 08:04:20,603 INFO L226 Difference]: Without dead ends: 31621 [2020-12-22 08:04:20,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:04:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31621 states. [2020-12-22 08:04:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31621 to 31619. [2020-12-22 08:04:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31619 states. [2020-12-22 08:04:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31619 states to 31619 states and 43327 transitions. [2020-12-22 08:04:22,589 INFO L78 Accepts]: Start accepts. Automaton has 31619 states and 43327 transitions. Word has length 153 [2020-12-22 08:04:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:22,589 INFO L481 AbstractCegarLoop]: Abstraction has 31619 states and 43327 transitions. [2020-12-22 08:04:22,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:04:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 31619 states and 43327 transitions. [2020-12-22 08:04:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 08:04:22,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:22,622 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] [2020-12-22 08:04:22,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:04:22,622 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:22,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1804095396, now seen corresponding path program 1 times [2020-12-22 08:04:22,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:22,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941680084] [2020-12-22 08:04:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:22,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941680084] [2020-12-22 08:04:22,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:22,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:04:22,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299125225] [2020-12-22 08:04:22,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:04:22,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:22,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:04:22,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:22,723 INFO L87 Difference]: Start difference. First operand 31619 states and 43327 transitions. Second operand 3 states. [2020-12-22 08:04:25,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:25,377 INFO L93 Difference]: Finished difference Result 58386 states and 83248 transitions. [2020-12-22 08:04:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:04:25,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 08:04:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:25,439 INFO L225 Difference]: With dead ends: 58386 [2020-12-22 08:04:25,439 INFO L226 Difference]: Without dead ends: 45677 [2020-12-22 08:04:25,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:04:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45677 states. [2020-12-22 08:04:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45677 to 45675. [2020-12-22 08:04:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45675 states. [2020-12-22 08:04:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45675 states to 45675 states and 63079 transitions. [2020-12-22 08:04:28,566 INFO L78 Accepts]: Start accepts. Automaton has 45675 states and 63079 transitions. Word has length 153 [2020-12-22 08:04:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:28,566 INFO L481 AbstractCegarLoop]: Abstraction has 45675 states and 63079 transitions. [2020-12-22 08:04:28,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:04:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 45675 states and 63079 transitions. [2020-12-22 08:04:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 08:04:28,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:28,594 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] [2020-12-22 08:04:28,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:04:28,594 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:28,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:28,595 INFO L82 PathProgramCache]: Analyzing trace with hash -345875771, now seen corresponding path program 1 times [2020-12-22 08:04:28,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:28,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12252091] [2020-12-22 08:04:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:28,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12252091] [2020-12-22 08:04:28,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:28,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:04:28,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247727257] [2020-12-22 08:04:28,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:04:28,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:28,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:04:28,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:04:28,747 INFO L87 Difference]: Start difference. First operand 45675 states and 63079 transitions. Second operand 4 states. [2020-12-22 08:04:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:30,772 INFO L93 Difference]: Finished difference Result 72831 states and 100555 transitions. [2020-12-22 08:04:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:04:30,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-12-22 08:04:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:30,823 INFO L225 Difference]: With dead ends: 72831 [2020-12-22 08:04:30,823 INFO L226 Difference]: Without dead ends: 37198 [2020-12-22 08:04:30,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:04:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37198 states. [2020-12-22 08:04:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37198 to 37198. [2020-12-22 08:04:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37198 states. [2020-12-22 08:04:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37198 states to 37198 states and 51201 transitions. [2020-12-22 08:04:33,579 INFO L78 Accepts]: Start accepts. Automaton has 37198 states and 51201 transitions. Word has length 153 [2020-12-22 08:04:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:33,580 INFO L481 AbstractCegarLoop]: Abstraction has 37198 states and 51201 transitions. [2020-12-22 08:04:33,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:04:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 37198 states and 51201 transitions. [2020-12-22 08:04:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 08:04:33,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:33,600 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] [2020-12-22 08:04:33,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:04:33,601 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:33,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1760858661, now seen corresponding path program 1 times [2020-12-22 08:04:33,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:33,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781707407] [2020-12-22 08:04:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:33,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781707407] [2020-12-22 08:04:33,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:33,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:04:33,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519891435] [2020-12-22 08:04:33,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:04:33,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:33,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:04:33,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:04:33,865 INFO L87 Difference]: Start difference. First operand 37198 states and 51201 transitions. Second operand 8 states. [2020-12-22 08:04:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:37,501 INFO L93 Difference]: Finished difference Result 75651 states and 106363 transitions. [2020-12-22 08:04:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:04:37,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 159 [2020-12-22 08:04:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:37,562 INFO L225 Difference]: With dead ends: 75651 [2020-12-22 08:04:37,562 INFO L226 Difference]: Without dead ends: 60149 [2020-12-22 08:04:37,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:04:37,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60149 states. [2020-12-22 08:04:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60149 to 60147. [2020-12-22 08:04:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60147 states. [2020-12-22 08:04:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60147 states to 60147 states and 81623 transitions. [2020-12-22 08:04:41,489 INFO L78 Accepts]: Start accepts. Automaton has 60147 states and 81623 transitions. Word has length 159 [2020-12-22 08:04:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:41,489 INFO L481 AbstractCegarLoop]: Abstraction has 60147 states and 81623 transitions. [2020-12-22 08:04:41,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:04:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 60147 states and 81623 transitions. [2020-12-22 08:04:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 08:04:41,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:41,529 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] [2020-12-22 08:04:41,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:04:41,529 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:41,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:41,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1384607787, now seen corresponding path program 1 times [2020-12-22 08:04:41,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:41,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126664448] [2020-12-22 08:04:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:41,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126664448] [2020-12-22 08:04:41,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:41,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:04:41,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519639118] [2020-12-22 08:04:41,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:04:41,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:41,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:04:41,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:04:41,686 INFO L87 Difference]: Start difference. First operand 60147 states and 81623 transitions. Second operand 4 states. [2020-12-22 08:04:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:04:45,030 INFO L93 Difference]: Finished difference Result 111555 states and 151448 transitions. [2020-12-22 08:04:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:04:45,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-12-22 08:04:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:04:45,090 INFO L225 Difference]: With dead ends: 111555 [2020-12-22 08:04:45,091 INFO L226 Difference]: Without dead ends: 51466 [2020-12-22 08:04:45,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:04:45,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51466 states. [2020-12-22 08:04:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51466 to 51466. [2020-12-22 08:04:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51466 states. [2020-12-22 08:04:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51466 states to 51466 states and 69898 transitions. [2020-12-22 08:04:48,492 INFO L78 Accepts]: Start accepts. Automaton has 51466 states and 69898 transitions. Word has length 159 [2020-12-22 08:04:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:04:48,492 INFO L481 AbstractCegarLoop]: Abstraction has 51466 states and 69898 transitions. [2020-12-22 08:04:48,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:04:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 51466 states and 69898 transitions. [2020-12-22 08:04:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 08:04:48,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:04:48,524 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] [2020-12-22 08:04:48,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:04:48,524 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:04:48,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:04:48,525 INFO L82 PathProgramCache]: Analyzing trace with hash 388359894, now seen corresponding path program 1 times [2020-12-22 08:04:48,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:04:48,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335325895] [2020-12-22 08:04:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:04:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:04:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:04:49,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335325895] [2020-12-22 08:04:49,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:04:49,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:04:49,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339346181] [2020-12-22 08:04:49,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:04:49,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:04:49,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:04:49,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:04:49,257 INFO L87 Difference]: Start difference. First operand 51466 states and 69898 transitions. Second operand 18 states. [2020-12-22 08:04:49,433 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-12-22 08:04:51,705 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-12-22 08:04:52,871 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-12-22 08:04:53,193 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-12-22 08:04:53,719 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-12-22 08:04:54,293 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-22 08:04:54,616 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-12-22 08:05:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:05:02,672 INFO L93 Difference]: Finished difference Result 121215 states and 173623 transitions. [2020-12-22 08:05:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-22 08:05:02,673 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 165 [2020-12-22 08:05:02,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:05:02,821 INFO L225 Difference]: With dead ends: 121215 [2020-12-22 08:05:02,821 INFO L226 Difference]: Without dead ends: 113853 [2020-12-22 08:05:02,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=516, Invalid=2136, Unknown=0, NotChecked=0, Total=2652 [2020-12-22 08:05:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113853 states. [2020-12-22 08:05:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113853 to 54464. [2020-12-22 08:05:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54464 states. [2020-12-22 08:05:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54464 states to 54464 states and 73496 transitions. [2020-12-22 08:05:07,958 INFO L78 Accepts]: Start accepts. Automaton has 54464 states and 73496 transitions. Word has length 165 [2020-12-22 08:05:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:05:07,958 INFO L481 AbstractCegarLoop]: Abstraction has 54464 states and 73496 transitions. [2020-12-22 08:05:07,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:05:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 54464 states and 73496 transitions. [2020-12-22 08:05:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 08:05:07,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:05:07,987 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] [2020-12-22 08:05:07,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:05:07,987 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:05:07,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:05:07,988 INFO L82 PathProgramCache]: Analyzing trace with hash -110442602, now seen corresponding path program 1 times [2020-12-22 08:05:07,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:05:07,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408590660] [2020-12-22 08:05:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:05:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:05:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:05:08,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408590660] [2020-12-22 08:05:08,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:05:08,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:05:08,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977895134] [2020-12-22 08:05:08,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:05:08,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:05:08,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:05:08,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:05:08,589 INFO L87 Difference]: Start difference. First operand 54464 states and 73496 transitions. Second operand 16 states. [2020-12-22 08:05:24,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:05:24,789 INFO L93 Difference]: Finished difference Result 164546 states and 237561 transitions. [2020-12-22 08:05:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:05:24,789 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 165 [2020-12-22 08:05:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:05:25,168 INFO L225 Difference]: With dead ends: 164546 [2020-12-22 08:05:25,168 INFO L226 Difference]: Without dead ends: 149838 [2020-12-22 08:05:25,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=333, Invalid=927, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:05:25,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149838 states. [2020-12-22 08:05:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149838 to 63944. [2020-12-22 08:05:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63944 states. [2020-12-22 08:05:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63944 states to 63944 states and 84840 transitions. [2020-12-22 08:05:31,815 INFO L78 Accepts]: Start accepts. Automaton has 63944 states and 84840 transitions. Word has length 165 [2020-12-22 08:05:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:05:31,815 INFO L481 AbstractCegarLoop]: Abstraction has 63944 states and 84840 transitions. [2020-12-22 08:05:31,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:05:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand 63944 states and 84840 transitions. [2020-12-22 08:05:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 08:05:31,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:05:31,851 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] [2020-12-22 08:05:31,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:05:31,852 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:05:31,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:05:31,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1368419441, now seen corresponding path program 1 times [2020-12-22 08:05:31,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:05:31,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930764553] [2020-12-22 08:05:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:05:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:05:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:05:31,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930764553] [2020-12-22 08:05:31,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:05:31,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:05:31,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952392470] [2020-12-22 08:05:31,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:05:31,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:05:31,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:05:31,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:05:31,955 INFO L87 Difference]: Start difference. First operand 63944 states and 84840 transitions. Second operand 3 states. [2020-12-22 08:05:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:05:41,472 INFO L93 Difference]: Finished difference Result 144700 states and 194740 transitions. [2020-12-22 08:05:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:05:41,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-22 08:05:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:05:41,602 INFO L225 Difference]: With dead ends: 144700 [2020-12-22 08:05:41,602 INFO L226 Difference]: Without dead ends: 103391 [2020-12-22 08:05:41,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:05:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103391 states. [2020-12-22 08:05:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103391 to 103347. [2020-12-22 08:05:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103347 states. [2020-12-22 08:05:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103347 states to 103347 states and 137423 transitions. [2020-12-22 08:05:51,742 INFO L78 Accepts]: Start accepts. Automaton has 103347 states and 137423 transitions. Word has length 165 [2020-12-22 08:05:51,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:05:51,743 INFO L481 AbstractCegarLoop]: Abstraction has 103347 states and 137423 transitions. [2020-12-22 08:05:51,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:05:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 103347 states and 137423 transitions. [2020-12-22 08:05:51,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 08:05:51,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:05:51,802 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] [2020-12-22 08:05:51,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:05:51,803 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:05:51,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:05:51,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1105520434, now seen corresponding path program 1 times [2020-12-22 08:05:51,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:05:51,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125433925] [2020-12-22 08:05:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:05:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:05:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:05:51,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125433925] [2020-12-22 08:05:51,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:05:51,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:05:51,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177470758] [2020-12-22 08:05:51,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:05:51,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:05:51,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:05:51,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:05:51,998 INFO L87 Difference]: Start difference. First operand 103347 states and 137423 transitions. Second operand 5 states. [2020-12-22 08:06:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:01,228 INFO L93 Difference]: Finished difference Result 193268 states and 257016 transitions. [2020-12-22 08:06:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:01,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-12-22 08:06:01,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:01,326 INFO L225 Difference]: With dead ends: 193268 [2020-12-22 08:06:01,326 INFO L226 Difference]: Without dead ends: 90388 [2020-12-22 08:06:01,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:01,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90388 states. [2020-12-22 08:06:10,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90388 to 90264. [2020-12-22 08:06:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90264 states. [2020-12-22 08:06:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90264 states to 90264 states and 119997 transitions. [2020-12-22 08:06:10,523 INFO L78 Accepts]: Start accepts. Automaton has 90264 states and 119997 transitions. Word has length 165 [2020-12-22 08:06:10,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:10,523 INFO L481 AbstractCegarLoop]: Abstraction has 90264 states and 119997 transitions. [2020-12-22 08:06:10,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:06:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 90264 states and 119997 transitions. [2020-12-22 08:06:10,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 08:06:10,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:10,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:10,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:06:10,574 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:10,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1962199212, now seen corresponding path program 1 times [2020-12-22 08:06:10,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:10,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462332014] [2020-12-22 08:06:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:11,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462332014] [2020-12-22 08:06:11,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:11,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:06:11,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610586502] [2020-12-22 08:06:11,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:06:11,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:11,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:06:11,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:06:11,597 INFO L87 Difference]: Start difference. First operand 90264 states and 119997 transitions. Second operand 15 states. [2020-12-22 08:06:38,483 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-12-22 08:06:43,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:43,602 INFO L93 Difference]: Finished difference Result 247341 states and 346259 transitions. [2020-12-22 08:06:43,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-22 08:06:43,603 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 167 [2020-12-22 08:06:43,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:44,102 INFO L225 Difference]: With dead ends: 247341 [2020-12-22 08:06:44,102 INFO L226 Difference]: Without dead ends: 214045 [2020-12-22 08:06:44,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=794, Invalid=2398, Unknown=0, NotChecked=0, Total=3192 [2020-12-22 08:06:44,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214045 states. [2020-12-22 08:06:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214045 to 100334. [2020-12-22 08:06:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100334 states. [2020-12-22 08:06:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100334 states to 100334 states and 131819 transitions. [2020-12-22 08:06:56,648 INFO L78 Accepts]: Start accepts. Automaton has 100334 states and 131819 transitions. Word has length 167 [2020-12-22 08:06:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:56,648 INFO L481 AbstractCegarLoop]: Abstraction has 100334 states and 131819 transitions. [2020-12-22 08:06:56,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:06:56,811 INFO L276 IsEmpty]: Start isEmpty. Operand 100334 states and 131819 transitions. [2020-12-22 08:06:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 08:06:56,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:56,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:56,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:06:56,873 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:56,874 INFO L82 PathProgramCache]: Analyzing trace with hash -902920625, now seen corresponding path program 1 times [2020-12-22 08:06:56,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:56,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673411377] [2020-12-22 08:06:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:57,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673411377] [2020-12-22 08:06:57,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:57,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:57,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077663958] [2020-12-22 08:06:57,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:57,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:57,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:57,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:57,080 INFO L87 Difference]: Start difference. First operand 100334 states and 131819 transitions. Second operand 4 states.