./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d52f31574095462f7bebf0d97516364dd650b64428a7b12e3aa21d1b47f96325 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:05:00,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:05:00,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:05:00,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:05:00,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:05:00,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:05:00,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:05:00,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:05:00,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:05:00,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:05:00,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:05:00,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:05:00,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:05:00,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:05:00,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:05:00,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:05:00,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:05:00,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:05:00,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:05:00,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:05:00,830 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:05:00,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:05:00,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:05:00,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:05:00,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:05:00,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:05:00,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:05:00,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:05:00,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:05:00,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:05:00,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:05:00,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:05:00,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:05:00,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:05:00,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:05:00,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:05:00,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:05:00,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:05:00,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:05:00,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:05:00,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:05:00,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:05:00,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:05:00,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:05:00,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:05:00,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:05:00,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:05:00,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:05:00,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:05:00,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:05:00,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:05:00,886 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:05:00,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:05:00,888 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:05:00,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:05:00,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:05:00,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:05:00,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:05:00,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:05:00,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:05:00,889 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:05:00,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:05:00,891 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:05:00,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:05:00,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:05:00,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:05:00,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:05:00,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:05:00,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:05:00,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:05:00,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:05:00,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:05:00,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:05:00,894 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:05:00,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:05:00,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:05:00,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d52f31574095462f7bebf0d97516364dd650b64428a7b12e3aa21d1b47f96325 [2022-07-22 18:05:01,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:05:01,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:05:01,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:05:01,169 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:05:01,170 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:05:01,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2022-07-22 18:05:01,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1732f01/74aef9b313934decb52a5130a753c1a1/FLAG0ce58fe60 [2022-07-22 18:05:01,653 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:05:01,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2022-07-22 18:05:01,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1732f01/74aef9b313934decb52a5130a753c1a1/FLAG0ce58fe60 [2022-07-22 18:05:01,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1732f01/74aef9b313934decb52a5130a753c1a1 [2022-07-22 18:05:01,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:05:01,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:05:01,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:05:01,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:05:01,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:05:01,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:05:01" (1/1) ... [2022-07-22 18:05:01,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@234ab95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:01, skipping insertion in model container [2022-07-22 18:05:01,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:05:01" (1/1) ... [2022-07-22 18:05:01,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:05:01,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:05:01,963 WARN L230 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/pals_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2022-07-22 18:05:01,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:05:01,973 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:05:02,013 WARN L230 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/pals_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2022-07-22 18:05:02,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:05:02,027 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:05:02,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02 WrapperNode [2022-07-22 18:05:02,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:05:02,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:05:02,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:05:02,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:05:02,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,086 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 452 [2022-07-22 18:05:02,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:05:02,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:05:02,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:05:02,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:05:02,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:05:02,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:05:02,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:05:02,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:05:02,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (1/1) ... [2022-07-22 18:05:02,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:05:02,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:05:02,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 18:05:02,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 18:05:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:05:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:05:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:05:02,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:05:02,294 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:05:02,295 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:05:02,781 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:05:02,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:05:02,787 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:05:02,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:05:02 BoogieIcfgContainer [2022-07-22 18:05:02,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:05:02,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:05:02,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:05:02,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:05:02,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:05:01" (1/3) ... [2022-07-22 18:05:02,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7910a7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:05:02, skipping insertion in model container [2022-07-22 18:05:02,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:02" (2/3) ... [2022-07-22 18:05:02,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7910a7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:05:02, skipping insertion in model container [2022-07-22 18:05:02,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:05:02" (3/3) ... [2022-07-22 18:05:02,794 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2022-07-22 18:05:02,804 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:05:02,804 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:05:02,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:05:02,844 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d5b340, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@53b936dd [2022-07-22 18:05:02,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:05:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 128 states have (on average 1.75) internal successors, (224), 129 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 18:05:02,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:02,857 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:02,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:02,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1880075128, now seen corresponding path program 1 times [2022-07-22 18:05:02,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:02,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518048626] [2022-07-22 18:05:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:02,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:03,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518048626] [2022-07-22 18:05:03,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518048626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:03,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:03,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 18:05:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932206419] [2022-07-22 18:05:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:03,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 18:05:03,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 18:05:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:05:03,074 INFO L87 Difference]: Start difference. First operand has 130 states, 128 states have (on average 1.75) internal successors, (224), 129 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:03,092 INFO L93 Difference]: Finished difference Result 201 states and 339 transitions. [2022-07-22 18:05:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 18:05:03,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-22 18:05:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:03,099 INFO L225 Difference]: With dead ends: 201 [2022-07-22 18:05:03,100 INFO L226 Difference]: Without dead ends: 126 [2022-07-22 18:05:03,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:05:03,104 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:03,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-22 18:05:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-22 18:05:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.736) internal successors, (217), 125 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 217 transitions. [2022-07-22 18:05:03,130 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 217 transitions. Word has length 41 [2022-07-22 18:05:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:03,131 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 217 transitions. [2022-07-22 18:05:03,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 217 transitions. [2022-07-22 18:05:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 18:05:03,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:03,133 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:03,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:05:03,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:03,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2020525382, now seen corresponding path program 1 times [2022-07-22 18:05:03,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:03,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627610320] [2022-07-22 18:05:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:03,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:03,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627610320] [2022-07-22 18:05:03,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627610320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:03,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:03,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:05:03,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485922412] [2022-07-22 18:05:03,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:03,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:05:03,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:03,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:05:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:05:03,244 INFO L87 Difference]: Start difference. First operand 126 states and 217 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:03,332 INFO L93 Difference]: Finished difference Result 200 states and 332 transitions. [2022-07-22 18:05:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:05:03,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-22 18:05:03,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:03,336 INFO L225 Difference]: With dead ends: 200 [2022-07-22 18:05:03,337 INFO L226 Difference]: Without dead ends: 126 [2022-07-22 18:05:03,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:05:03,338 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:03,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 807 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-22 18:05:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-22 18:05:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.336) internal successors, (167), 125 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2022-07-22 18:05:03,345 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 41 [2022-07-22 18:05:03,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:03,346 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2022-07-22 18:05:03,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,346 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2022-07-22 18:05:03,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 18:05:03,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:03,348 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:03,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:05:03,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:03,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:03,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1655570070, now seen corresponding path program 1 times [2022-07-22 18:05:03,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:03,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057286641] [2022-07-22 18:05:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:03,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:03,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:03,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057286641] [2022-07-22 18:05:03,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057286641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:03,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:03,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932742119] [2022-07-22 18:05:03,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:03,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:03,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:03,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:03,516 INFO L87 Difference]: Start difference. First operand 126 states and 167 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:03,547 INFO L93 Difference]: Finished difference Result 260 states and 379 transitions. [2022-07-22 18:05:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:03,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-22 18:05:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:03,548 INFO L225 Difference]: With dead ends: 260 [2022-07-22 18:05:03,548 INFO L226 Difference]: Without dead ends: 190 [2022-07-22 18:05:03,549 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:05:03,550 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 81 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:03,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 325 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-22 18:05:03,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-07-22 18:05:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 187 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 266 transitions. [2022-07-22 18:05:03,565 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 266 transitions. Word has length 90 [2022-07-22 18:05:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:03,567 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 266 transitions. [2022-07-22 18:05:03,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 266 transitions. [2022-07-22 18:05:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 18:05:03,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:03,570 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:03,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:05:03,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:03,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:03,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1317776928, now seen corresponding path program 1 times [2022-07-22 18:05:03,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:03,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677043785] [2022-07-22 18:05:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:03,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:03,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:03,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677043785] [2022-07-22 18:05:03,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677043785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:03,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:03,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:03,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263221612] [2022-07-22 18:05:03,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:03,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:03,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:03,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:03,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:03,701 INFO L87 Difference]: Start difference. First operand 188 states and 266 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:03,727 INFO L93 Difference]: Finished difference Result 440 states and 666 transitions. [2022-07-22 18:05:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:03,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-22 18:05:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:03,729 INFO L225 Difference]: With dead ends: 440 [2022-07-22 18:05:03,729 INFO L226 Difference]: Without dead ends: 308 [2022-07-22 18:05:03,729 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:05:03,730 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 77 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:03,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 324 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-22 18:05:03,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2022-07-22 18:05:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.4852459016393442) internal successors, (453), 305 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 453 transitions. [2022-07-22 18:05:03,744 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 453 transitions. Word has length 90 [2022-07-22 18:05:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:03,745 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 453 transitions. [2022-07-22 18:05:03,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 453 transitions. [2022-07-22 18:05:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 18:05:03,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:03,746 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:03,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:05:03,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash -99791530, now seen corresponding path program 1 times [2022-07-22 18:05:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:03,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542527977] [2022-07-22 18:05:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:03,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:03,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542527977] [2022-07-22 18:05:03,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542527977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:03,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:03,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:05:03,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458078413] [2022-07-22 18:05:03,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:03,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:05:03,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:03,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:05:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:05:03,846 INFO L87 Difference]: Start difference. First operand 306 states and 453 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:04,205 INFO L93 Difference]: Finished difference Result 3806 states and 6011 transitions. [2022-07-22 18:05:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:05:04,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-22 18:05:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:04,219 INFO L225 Difference]: With dead ends: 3806 [2022-07-22 18:05:04,219 INFO L226 Difference]: Without dead ends: 3556 [2022-07-22 18:05:04,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-22 18:05:04,232 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 2558 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:04,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 2078 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2022-07-22 18:05:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 554. [2022-07-22 18:05:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.5207956600361663) internal successors, (841), 553 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 841 transitions. [2022-07-22 18:05:04,299 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 841 transitions. Word has length 90 [2022-07-22 18:05:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:04,300 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 841 transitions. [2022-07-22 18:05:04,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 841 transitions. [2022-07-22 18:05:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:04,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:04,301 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:04,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:05:04,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1468897702, now seen corresponding path program 1 times [2022-07-22 18:05:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:04,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583423467] [2022-07-22 18:05:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:04,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:04,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:04,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583423467] [2022-07-22 18:05:04,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583423467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:04,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:04,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:04,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586221753] [2022-07-22 18:05:04,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:04,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:04,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:04,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:04,356 INFO L87 Difference]: Start difference. First operand 554 states and 841 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:04,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:04,439 INFO L93 Difference]: Finished difference Result 1506 states and 2335 transitions. [2022-07-22 18:05:04,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:04,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:05:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:04,443 INFO L225 Difference]: With dead ends: 1506 [2022-07-22 18:05:04,443 INFO L226 Difference]: Without dead ends: 1008 [2022-07-22 18:05:04,444 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:05:04,445 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 68 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:04,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 267 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-22 18:05:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 998. [2022-07-22 18:05:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.5255767301905716) internal successors, (1521), 997 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1521 transitions. [2022-07-22 18:05:04,508 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1521 transitions. Word has length 92 [2022-07-22 18:05:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:04,509 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1521 transitions. [2022-07-22 18:05:04,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1521 transitions. [2022-07-22 18:05:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:04,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:04,511 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:04,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:05:04,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:04,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1535391214, now seen corresponding path program 1 times [2022-07-22 18:05:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:04,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941664833] [2022-07-22 18:05:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:04,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:04,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941664833] [2022-07-22 18:05:04,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941664833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:04,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:04,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:05:04,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28751317] [2022-07-22 18:05:04,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:04,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:05:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:05:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:05:04,740 INFO L87 Difference]: Start difference. First operand 998 states and 1521 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:05,016 INFO L93 Difference]: Finished difference Result 1942 states and 2987 transitions. [2022-07-22 18:05:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:05:05,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:05:05,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:05,021 INFO L225 Difference]: With dead ends: 1942 [2022-07-22 18:05:05,021 INFO L226 Difference]: Without dead ends: 1000 [2022-07-22 18:05:05,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:05:05,023 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 624 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:05,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 831 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-07-22 18:05:05,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 998. [2022-07-22 18:05:05,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.5175526579739218) internal successors, (1513), 997 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1513 transitions. [2022-07-22 18:05:05,071 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1513 transitions. Word has length 92 [2022-07-22 18:05:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:05,071 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1513 transitions. [2022-07-22 18:05:05,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:05,071 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1513 transitions. [2022-07-22 18:05:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:05,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:05,072 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:05,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:05:05,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash 550533322, now seen corresponding path program 1 times [2022-07-22 18:05:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:05,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101426999] [2022-07-22 18:05:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:05,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:05,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101426999] [2022-07-22 18:05:05,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101426999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:05,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:05,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801869278] [2022-07-22 18:05:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:05,109 INFO L87 Difference]: Start difference. First operand 998 states and 1513 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:05,204 INFO L93 Difference]: Finished difference Result 2786 states and 4267 transitions. [2022-07-22 18:05:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:05,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:05:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:05,209 INFO L225 Difference]: With dead ends: 2786 [2022-07-22 18:05:05,210 INFO L226 Difference]: Without dead ends: 1844 [2022-07-22 18:05:05,210 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:05:05,211 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 85 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:05,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 335 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:05,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-22 18:05:05,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-07-22 18:05:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.5171102661596958) internal successors, (2793), 1841 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2793 transitions. [2022-07-22 18:05:05,315 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2793 transitions. Word has length 92 [2022-07-22 18:05:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:05,315 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2793 transitions. [2022-07-22 18:05:05,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2793 transitions. [2022-07-22 18:05:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:05,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:05,317 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:05,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:05:05,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:05,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:05,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1925362326, now seen corresponding path program 1 times [2022-07-22 18:05:05,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:05,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546481155] [2022-07-22 18:05:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:05,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:05,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:05,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546481155] [2022-07-22 18:05:05,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546481155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:05,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:05,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12124048] [2022-07-22 18:05:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:05,351 INFO L87 Difference]: Start difference. First operand 1842 states and 2793 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:05,512 INFO L93 Difference]: Finished difference Result 5222 states and 7947 transitions. [2022-07-22 18:05:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:05,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:05:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:05,522 INFO L225 Difference]: With dead ends: 5222 [2022-07-22 18:05:05,522 INFO L226 Difference]: Without dead ends: 3436 [2022-07-22 18:05:05,523 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:05:05,524 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:05,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 344 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2022-07-22 18:05:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3434. [2022-07-22 18:05:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 1.5080104864549957) internal successors, (5177), 3433 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 5177 transitions. [2022-07-22 18:05:05,713 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 5177 transitions. Word has length 92 [2022-07-22 18:05:05,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:05,713 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 5177 transitions. [2022-07-22 18:05:05,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:05,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 5177 transitions. [2022-07-22 18:05:05,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:05,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:05,714 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:05,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:05:05,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:05,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1745956342, now seen corresponding path program 1 times [2022-07-22 18:05:05,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:05,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941721533] [2022-07-22 18:05:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:05,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:05,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:05,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941721533] [2022-07-22 18:05:05,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941721533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:05,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:05,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880084526] [2022-07-22 18:05:05,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:05,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:05,750 INFO L87 Difference]: Start difference. First operand 3434 states and 5177 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:06,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:06,081 INFO L93 Difference]: Finished difference Result 9806 states and 14779 transitions. [2022-07-22 18:05:06,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:06,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:05:06,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:06,102 INFO L225 Difference]: With dead ends: 9806 [2022-07-22 18:05:06,102 INFO L226 Difference]: Without dead ends: 6428 [2022-07-22 18:05:06,105 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:05:06,105 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 93 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:06,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 353 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2022-07-22 18:05:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 6426. [2022-07-22 18:05:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6426 states, 6425 states have (on average 1.4930739299610896) internal successors, (9593), 6425 states have internal predecessors, (9593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 9593 transitions. [2022-07-22 18:05:06,480 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 9593 transitions. Word has length 92 [2022-07-22 18:05:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:06,481 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 9593 transitions. [2022-07-22 18:05:06,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 9593 transitions. [2022-07-22 18:05:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:06,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:06,482 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:06,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:05:06,482 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:06,483 INFO L85 PathProgramCache]: Analyzing trace with hash 789382826, now seen corresponding path program 1 times [2022-07-22 18:05:06,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:06,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010194782] [2022-07-22 18:05:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:06,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:06,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010194782] [2022-07-22 18:05:06,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010194782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:06,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:06,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063632668] [2022-07-22 18:05:06,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:06,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:06,514 INFO L87 Difference]: Start difference. First operand 6426 states and 9593 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:07,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:07,126 INFO L93 Difference]: Finished difference Result 18398 states and 27387 transitions. [2022-07-22 18:05:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:07,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-22 18:05:07,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:07,153 INFO L225 Difference]: With dead ends: 18398 [2022-07-22 18:05:07,154 INFO L226 Difference]: Without dead ends: 12028 [2022-07-22 18:05:07,159 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:05:07,159 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 97 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:07,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 362 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:07,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12028 states. [2022-07-22 18:05:07,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12028 to 12026. [2022-07-22 18:05:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12026 states, 12025 states have (on average 1.4736798336798336) internal successors, (17721), 12025 states have internal predecessors, (17721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12026 states to 12026 states and 17721 transitions. [2022-07-22 18:05:07,855 INFO L78 Accepts]: Start accepts. Automaton has 12026 states and 17721 transitions. Word has length 92 [2022-07-22 18:05:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:07,855 INFO L495 AbstractCegarLoop]: Abstraction has 12026 states and 17721 transitions. [2022-07-22 18:05:07,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 12026 states and 17721 transitions. [2022-07-22 18:05:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:05:07,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:07,858 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:07,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:05:07,858 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash -62235482, now seen corresponding path program 1 times [2022-07-22 18:05:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:07,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766180222] [2022-07-22 18:05:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:07,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:07,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:07,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766180222] [2022-07-22 18:05:07,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766180222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:07,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:07,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:05:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963241771] [2022-07-22 18:05:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:07,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:05:07,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:05:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:05:07,930 INFO L87 Difference]: Start difference. First operand 12026 states and 17721 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:08,936 INFO L93 Difference]: Finished difference Result 20896 states and 30633 transitions. [2022-07-22 18:05:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:05:08,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-22 18:05:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:08,965 INFO L225 Difference]: With dead ends: 20896 [2022-07-22 18:05:08,965 INFO L226 Difference]: Without dead ends: 20894 [2022-07-22 18:05:08,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:05:08,969 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 303 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:08,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 725 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20894 states. [2022-07-22 18:05:09,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20894 to 12410. [2022-07-22 18:05:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12410 states, 12409 states have (on average 1.4538641308727536) internal successors, (18041), 12409 states have internal predecessors, (18041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12410 states to 12410 states and 18041 transitions. [2022-07-22 18:05:09,702 INFO L78 Accepts]: Start accepts. Automaton has 12410 states and 18041 transitions. Word has length 93 [2022-07-22 18:05:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:09,702 INFO L495 AbstractCegarLoop]: Abstraction has 12410 states and 18041 transitions. [2022-07-22 18:05:09,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 12410 states and 18041 transitions. [2022-07-22 18:05:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 18:05:09,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:09,704 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:05:09,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:05:09,704 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:09,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1252770917, now seen corresponding path program 1 times [2022-07-22 18:05:09,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:09,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682908183] [2022-07-22 18:05:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:09,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:09,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:09,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682908183] [2022-07-22 18:05:09,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682908183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:09,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:09,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514104137] [2022-07-22 18:05:09,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:09,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:09,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:09,735 INFO L87 Difference]: Start difference. First operand 12410 states and 18041 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:10,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:10,892 INFO L93 Difference]: Finished difference Result 24961 states and 36479 transitions. [2022-07-22 18:05:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:10,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-22 18:05:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:10,966 INFO L225 Difference]: With dead ends: 24961 [2022-07-22 18:05:10,966 INFO L226 Difference]: Without dead ends: 18174 [2022-07-22 18:05:10,995 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:05:10,996 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 98 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:10,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 366 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18174 states. [2022-07-22 18:05:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18174 to 18172. [2022-07-22 18:05:12,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18172 states, 18171 states have (on average 1.4473061471575588) internal successors, (26299), 18171 states have internal predecessors, (26299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18172 states to 18172 states and 26299 transitions. [2022-07-22 18:05:12,648 INFO L78 Accepts]: Start accepts. Automaton has 18172 states and 26299 transitions. Word has length 94 [2022-07-22 18:05:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:12,649 INFO L495 AbstractCegarLoop]: Abstraction has 18172 states and 26299 transitions. [2022-07-22 18:05:12,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 18172 states and 26299 transitions. [2022-07-22 18:05:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 18:05:12,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:12,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:05:12,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:05:12,675 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1608497720, now seen corresponding path program 1 times [2022-07-22 18:05:12,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:12,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818997256] [2022-07-22 18:05:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:12,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 18:05:12,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:12,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818997256] [2022-07-22 18:05:12,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818997256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:12,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:12,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:05:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423136820] [2022-07-22 18:05:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:05:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:05:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:05:12,847 INFO L87 Difference]: Start difference. First operand 18172 states and 26299 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:21,922 INFO L93 Difference]: Finished difference Result 148492 states and 214915 transitions. [2022-07-22 18:05:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:05:21,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-07-22 18:05:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:22,485 INFO L225 Difference]: With dead ends: 148492 [2022-07-22 18:05:22,486 INFO L226 Difference]: Without dead ends: 130378 [2022-07-22 18:05:22,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:05:22,616 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 2254 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:22,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 1241 Invalid, 120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:05:22,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130378 states. [2022-07-22 18:05:26,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130378 to 36284. [2022-07-22 18:05:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36284 states, 36283 states have (on average 1.4427417798969213) internal successors, (52347), 36283 states have internal predecessors, (52347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36284 states to 36284 states and 52347 transitions. [2022-07-22 18:05:26,747 INFO L78 Accepts]: Start accepts. Automaton has 36284 states and 52347 transitions. Word has length 129 [2022-07-22 18:05:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:26,747 INFO L495 AbstractCegarLoop]: Abstraction has 36284 states and 52347 transitions. [2022-07-22 18:05:26,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:26,748 INFO L276 IsEmpty]: Start isEmpty. Operand 36284 states and 52347 transitions. [2022-07-22 18:05:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 18:05:26,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:26,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:05:26,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:05:26,768 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:26,769 INFO L85 PathProgramCache]: Analyzing trace with hash 917686760, now seen corresponding path program 1 times [2022-07-22 18:05:26,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:26,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3788171] [2022-07-22 18:05:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:26,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 18:05:26,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:26,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3788171] [2022-07-22 18:05:26,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3788171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:26,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:26,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:05:26,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972130611] [2022-07-22 18:05:26,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:26,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:05:26,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:26,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:05:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:05:26,921 INFO L87 Difference]: Start difference. First operand 36284 states and 52347 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:37,898 INFO L93 Difference]: Finished difference Result 166604 states and 240963 transitions. [2022-07-22 18:05:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:05:37,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-07-22 18:05:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:38,458 INFO L225 Difference]: With dead ends: 166604 [2022-07-22 18:05:38,459 INFO L226 Difference]: Without dead ends: 148490 [2022-07-22 18:05:38,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:05:38,546 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1983 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:38,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 1344 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:05:38,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148490 states.