./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label43.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/eca-rers2012/Problem13_label43.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 35560e922bf8333807d0348ddb335d0f345175bbe017d76c2c9d638827ad9537 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 04:40:30,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 04:40:30,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 04:40:30,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 04:40:30,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 04:40:30,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 04:40:30,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 04:40:30,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 04:40:30,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 04:40:30,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 04:40:30,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 04:40:30,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 04:40:30,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 04:40:30,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 04:40:30,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 04:40:30,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 04:40:30,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 04:40:30,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 04:40:30,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 04:40:30,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 04:40:30,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 04:40:30,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 04:40:30,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 04:40:30,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 04:40:30,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 04:40:30,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 04:40:30,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 04:40:30,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 04:40:30,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 04:40:30,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 04:40:30,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 04:40:30,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 04:40:30,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 04:40:30,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 04:40:30,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 04:40:30,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 04:40:30,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 04:40:30,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 04:40:30,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 04:40:30,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 04:40:30,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 04:40:30,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 04:40:30,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 04:40:30,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 04:40:30,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 04:40:30,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 04:40:30,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 04:40:30,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 04:40:30,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 04:40:30,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 04:40:30,680 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 04:40:30,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 04:40:30,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 04:40:30,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 04:40:30,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 04:40:30,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 04:40:30,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 04:40:30,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 04:40:30,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 04:40:30,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 04:40:30,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 04:40:30,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 04:40:30,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 04:40:30,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 04:40:30,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 04:40:30,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 04:40:30,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:40:30,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 04:40:30,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 04:40:30,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 04:40:30,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 04:40:30,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 04:40:30,683 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 04:40:30,683 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 04:40:30,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 04:40:30,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 04:40:30,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35560e922bf8333807d0348ddb335d0f345175bbe017d76c2c9d638827ad9537 [2021-12-17 04:40:30,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 04:40:30,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 04:40:30,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 04:40:30,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 04:40:30,898 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 04:40:30,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label43.c [2021-12-17 04:40:30,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482c5e10e/5cb28cbf93dc4635bd54e23358bdc837/FLAGe41cf8530 [2021-12-17 04:40:31,548 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 04:40:31,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label43.c [2021-12-17 04:40:31,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482c5e10e/5cb28cbf93dc4635bd54e23358bdc837/FLAGe41cf8530 [2021-12-17 04:40:31,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482c5e10e/5cb28cbf93dc4635bd54e23358bdc837 [2021-12-17 04:40:31,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 04:40:31,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 04:40:31,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 04:40:31,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 04:40:31,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 04:40:31,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:40:31" (1/1) ... [2021-12-17 04:40:31,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160f2e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:31, skipping insertion in model container [2021-12-17 04:40:31,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:40:31" (1/1) ... [2021-12-17 04:40:31,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 04:40:31,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 04:40:32,138 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/eca-rers2012/Problem13_label43.c[2870,2883] [2021-12-17 04:40:32,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:40:32,740 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 04:40:32,764 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/eca-rers2012/Problem13_label43.c[2870,2883] [2021-12-17 04:40:33,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:40:33,151 INFO L208 MainTranslator]: Completed translation [2021-12-17 04:40:33,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33 WrapperNode [2021-12-17 04:40:33,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 04:40:33,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 04:40:33,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 04:40:33,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 04:40:33,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:33,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:33,668 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2021-12-17 04:40:33,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 04:40:33,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 04:40:33,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 04:40:33,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 04:40:33,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:33,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:33,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:33,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:34,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:34,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:34,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:34,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 04:40:34,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 04:40:34,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 04:40:34,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 04:40:34,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (1/1) ... [2021-12-17 04:40:34,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:40:34,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:40:34,498 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) [2021-12-17 04:40:34,541 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 [2021-12-17 04:40:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 04:40:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 04:40:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 04:40:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 04:40:34,624 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 04:40:34,626 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 04:40:37,949 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 04:40:37,967 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 04:40:37,968 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 04:40:37,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:40:37 BoogieIcfgContainer [2021-12-17 04:40:37,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 04:40:37,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 04:40:37,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 04:40:37,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 04:40:37,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:40:31" (1/3) ... [2021-12-17 04:40:37,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a3e44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:40:37, skipping insertion in model container [2021-12-17 04:40:37,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:40:33" (2/3) ... [2021-12-17 04:40:37,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a3e44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:40:37, skipping insertion in model container [2021-12-17 04:40:37,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:40:37" (3/3) ... [2021-12-17 04:40:37,979 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label43.c [2021-12-17 04:40:37,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 04:40:37,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 04:40:38,035 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 04:40:38,041 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 04:40:38,042 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 04:40:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2021-12-17 04:40:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 04:40:38,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:38,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:38,083 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:38,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:38,087 INFO L85 PathProgramCache]: Analyzing trace with hash 567305786, now seen corresponding path program 1 times [2021-12-17 04:40:38,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:38,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80563594] [2021-12-17 04:40:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:38,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:40:38,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:38,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80563594] [2021-12-17 04:40:38,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80563594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:38,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:38,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:40:38,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826916641] [2021-12-17 04:40:38,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:38,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:38,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:38,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:38,324 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2021-12-17 04:40:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:41,852 INFO L93 Difference]: Finished difference Result 3147 states and 5806 transitions. [2021-12-17 04:40:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:41,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2021-12-17 04:40:41,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:41,885 INFO L225 Difference]: With dead ends: 3147 [2021-12-17 04:40:41,886 INFO L226 Difference]: Without dead ends: 1964 [2021-12-17 04:40:41,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:41,896 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 1161 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:41,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 992 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 04:40:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2021-12-17 04:40:41,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1951. [2021-12-17 04:40:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 1.6538461538461537) internal successors, (3225), 1950 states have internal predecessors, (3225), 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) [2021-12-17 04:40:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3225 transitions. [2021-12-17 04:40:42,002 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3225 transitions. Word has length 18 [2021-12-17 04:40:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:42,002 INFO L470 AbstractCegarLoop]: Abstraction has 1951 states and 3225 transitions. [2021-12-17 04:40:42,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2021-12-17 04:40:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3225 transitions. [2021-12-17 04:40:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 04:40:42,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:42,005 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 04:40:42,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 04:40:42,005 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2034680339, now seen corresponding path program 1 times [2021-12-17 04:40:42,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:42,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508500089] [2021-12-17 04:40:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:42,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:40:42,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:42,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508500089] [2021-12-17 04:40:42,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508500089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:42,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:42,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:40:42,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914029550] [2021-12-17 04:40:42,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:42,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:42,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:42,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:42,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:42,145 INFO L87 Difference]: Start difference. First operand 1951 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2021-12-17 04:40:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:45,496 INFO L93 Difference]: Finished difference Result 5542 states and 9222 transitions. [2021-12-17 04:40:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:45,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 89 [2021-12-17 04:40:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:45,508 INFO L225 Difference]: With dead ends: 5542 [2021-12-17 04:40:45,508 INFO L226 Difference]: Without dead ends: 3593 [2021-12-17 04:40:45,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:45,513 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:45,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 1009 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-17 04:40:45,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2021-12-17 04:40:45,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3581. [2021-12-17 04:40:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 1.5050279329608938) internal successors, (5388), 3580 states have internal predecessors, (5388), 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) [2021-12-17 04:40:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5388 transitions. [2021-12-17 04:40:45,577 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5388 transitions. Word has length 89 [2021-12-17 04:40:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:45,578 INFO L470 AbstractCegarLoop]: Abstraction has 3581 states and 5388 transitions. [2021-12-17 04:40:45,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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) [2021-12-17 04:40:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5388 transitions. [2021-12-17 04:40:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 04:40:45,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:45,581 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 04:40:45,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 04:40:45,582 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash -999796016, now seen corresponding path program 1 times [2021-12-17 04:40:45,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803007659] [2021-12-17 04:40:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:45,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:40:45,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:45,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803007659] [2021-12-17 04:40:45,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803007659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:45,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:45,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:40:45,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43307787] [2021-12-17 04:40:45,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:45,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:45,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:45,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:45,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:45,670 INFO L87 Difference]: Start difference. First operand 3581 states and 5388 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-12-17 04:40:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:48,878 INFO L93 Difference]: Finished difference Result 10352 states and 15625 transitions. [2021-12-17 04:40:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:48,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2021-12-17 04:40:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:48,898 INFO L225 Difference]: With dead ends: 10352 [2021-12-17 04:40:48,898 INFO L226 Difference]: Without dead ends: 6773 [2021-12-17 04:40:48,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:48,903 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 785 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:48,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 1172 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-17 04:40:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2021-12-17 04:40:48,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6749. [2021-12-17 04:40:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 6748 states have (on average 1.3252815649081209) internal successors, (8943), 6748 states have internal predecessors, (8943), 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) [2021-12-17 04:40:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 8943 transitions. [2021-12-17 04:40:48,990 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 8943 transitions. Word has length 103 [2021-12-17 04:40:48,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:48,990 INFO L470 AbstractCegarLoop]: Abstraction has 6749 states and 8943 transitions. [2021-12-17 04:40:48,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-12-17 04:40:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 8943 transitions. [2021-12-17 04:40:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-17 04:40:48,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:48,992 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:48,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 04:40:48,992 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:48,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:48,993 INFO L85 PathProgramCache]: Analyzing trace with hash 614179018, now seen corresponding path program 1 times [2021-12-17 04:40:48,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:48,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779380971] [2021-12-17 04:40:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:48,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:40:49,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:49,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779380971] [2021-12-17 04:40:49,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779380971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:49,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:49,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:40:49,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416263019] [2021-12-17 04:40:49,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:49,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:49,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:49,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:49,108 INFO L87 Difference]: Start difference. First operand 6749 states and 8943 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2021-12-17 04:40:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:52,551 INFO L93 Difference]: Finished difference Result 19873 states and 26320 transitions. [2021-12-17 04:40:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:52,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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 132 [2021-12-17 04:40:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:52,596 INFO L225 Difference]: With dead ends: 19873 [2021-12-17 04:40:52,597 INFO L226 Difference]: Without dead ends: 13126 [2021-12-17 04:40:52,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:52,608 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 901 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:52,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 608 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2878 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 04:40:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13126 states. [2021-12-17 04:40:52,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13126 to 13114. [2021-12-17 04:40:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13114 states, 13113 states have (on average 1.2756806222832304) internal successors, (16728), 13113 states have internal predecessors, (16728), 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) [2021-12-17 04:40:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 16728 transitions. [2021-12-17 04:40:52,809 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 16728 transitions. Word has length 132 [2021-12-17 04:40:52,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:52,810 INFO L470 AbstractCegarLoop]: Abstraction has 13114 states and 16728 transitions. [2021-12-17 04:40:52,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2021-12-17 04:40:52,811 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 16728 transitions. [2021-12-17 04:40:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-17 04:40:52,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:52,814 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2021-12-17 04:40:52,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 04:40:52,814 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:52,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash -790702473, now seen corresponding path program 1 times [2021-12-17 04:40:52,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:52,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970886618] [2021-12-17 04:40:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:52,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-17 04:40:53,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:53,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970886618] [2021-12-17 04:40:53,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970886618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:53,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:53,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:40:53,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261913627] [2021-12-17 04:40:53,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:53,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:53,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:53,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:53,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:53,045 INFO L87 Difference]: Start difference. First operand 13114 states and 16728 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 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) [2021-12-17 04:40:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:55,704 INFO L93 Difference]: Finished difference Result 25439 states and 32642 transitions. [2021-12-17 04:40:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:55,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 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 210 [2021-12-17 04:40:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:55,741 INFO L225 Difference]: With dead ends: 25439 [2021-12-17 04:40:55,741 INFO L226 Difference]: Without dead ends: 13114 [2021-12-17 04:40:55,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:55,758 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:55,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 1214 Invalid, 2546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 04:40:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2021-12-17 04:40:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 13114. [2021-12-17 04:40:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13114 states, 13113 states have (on average 1.2745367192862045) internal successors, (16713), 13113 states have internal predecessors, (16713), 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) [2021-12-17 04:40:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 16713 transitions. [2021-12-17 04:40:55,945 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 16713 transitions. Word has length 210 [2021-12-17 04:40:55,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:55,946 INFO L470 AbstractCegarLoop]: Abstraction has 13114 states and 16713 transitions. [2021-12-17 04:40:55,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 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) [2021-12-17 04:40:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 16713 transitions. [2021-12-17 04:40:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-17 04:40:55,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:55,951 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2021-12-17 04:40:55,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 04:40:55,953 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:55,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2031333680, now seen corresponding path program 1 times [2021-12-17 04:40:55,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:55,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529752496] [2021-12-17 04:40:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:55,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:40:56,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:56,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529752496] [2021-12-17 04:40:56,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529752496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:56,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:56,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:56,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566837613] [2021-12-17 04:40:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:56,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:40:56,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:40:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:40:56,078 INFO L87 Difference]: Start difference. First operand 13114 states and 16713 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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) [2021-12-17 04:41:01,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:01,069 INFO L93 Difference]: Finished difference Result 45404 states and 59028 transitions. [2021-12-17 04:41:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:41:01,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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 215 [2021-12-17 04:41:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:01,124 INFO L225 Difference]: With dead ends: 45404 [2021-12-17 04:41:01,124 INFO L226 Difference]: Without dead ends: 33079 [2021-12-17 04:41:01,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:41:01,140 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 1625 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 6122 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 6746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 6122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:01,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 1153 Invalid, 6746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 6122 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-17 04:41:01,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33079 states. [2021-12-17 04:41:01,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33079 to 32857. [2021-12-17 04:41:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32857 states, 32856 states have (on average 1.232073289505722) internal successors, (40481), 32856 states have internal predecessors, (40481), 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) [2021-12-17 04:41:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32857 states to 32857 states and 40481 transitions. [2021-12-17 04:41:01,495 INFO L78 Accepts]: Start accepts. Automaton has 32857 states and 40481 transitions. Word has length 215 [2021-12-17 04:41:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:01,496 INFO L470 AbstractCegarLoop]: Abstraction has 32857 states and 40481 transitions. [2021-12-17 04:41:01,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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) [2021-12-17 04:41:01,496 INFO L276 IsEmpty]: Start isEmpty. Operand 32857 states and 40481 transitions. [2021-12-17 04:41:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-17 04:41:01,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:01,499 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:41:01,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 04:41:01,499 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1257624322, now seen corresponding path program 1 times [2021-12-17 04:41:01,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:01,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508024428] [2021-12-17 04:41:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:01,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:41:01,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:01,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508024428] [2021-12-17 04:41:01,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508024428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:01,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:41:01,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:41:01,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329903158] [2021-12-17 04:41:01,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:01,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:01,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:01,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:01,588 INFO L87 Difference]: Start difference. First operand 32857 states and 40481 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 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) [2021-12-17 04:41:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:04,635 INFO L93 Difference]: Finished difference Result 79898 states and 100692 transitions. [2021-12-17 04:41:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:04,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 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) Word has length 217 [2021-12-17 04:41:04,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:04,729 INFO L225 Difference]: With dead ends: 79898 [2021-12-17 04:41:04,729 INFO L226 Difference]: Without dead ends: 47830 [2021-12-17 04:41:04,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:04,766 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 837 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:04,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 1056 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 04:41:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47830 states. [2021-12-17 04:41:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47830 to 47818. [2021-12-17 04:41:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47818 states, 47817 states have (on average 1.214170692431562) internal successors, (58058), 47817 states have internal predecessors, (58058), 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) [2021-12-17 04:41:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47818 states to 47818 states and 58058 transitions. [2021-12-17 04:41:05,498 INFO L78 Accepts]: Start accepts. Automaton has 47818 states and 58058 transitions. Word has length 217 [2021-12-17 04:41:05,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:05,498 INFO L470 AbstractCegarLoop]: Abstraction has 47818 states and 58058 transitions. [2021-12-17 04:41:05,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 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) [2021-12-17 04:41:05,499 INFO L276 IsEmpty]: Start isEmpty. Operand 47818 states and 58058 transitions. [2021-12-17 04:41:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-17 04:41:05,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:05,501 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2021-12-17 04:41:05,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 04:41:05,502 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:05,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:05,503 INFO L85 PathProgramCache]: Analyzing trace with hash -738939493, now seen corresponding path program 1 times [2021-12-17 04:41:05,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:05,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13111192] [2021-12-17 04:41:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:05,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:41:05,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:05,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13111192] [2021-12-17 04:41:05,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13111192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:05,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:41:05,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:41:05,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317380817] [2021-12-17 04:41:05,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:05,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:05,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:05,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:05,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:05,619 INFO L87 Difference]: Start difference. First operand 47818 states and 58058 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2021-12-17 04:41:08,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:08,534 INFO L93 Difference]: Finished difference Result 94662 states and 115061 transitions. [2021-12-17 04:41:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:08,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 232 [2021-12-17 04:41:08,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:08,594 INFO L225 Difference]: With dead ends: 94662 [2021-12-17 04:41:08,595 INFO L226 Difference]: Without dead ends: 47633 [2021-12-17 04:41:08,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:08,626 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 1038 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:08,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1038 Valid, 1649 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 04:41:08,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47633 states. [2021-12-17 04:41:09,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47633 to 47627. [2021-12-17 04:41:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47627 states, 47626 states have (on average 1.1453197833116364) internal successors, (54547), 47626 states have internal predecessors, (54547), 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) [2021-12-17 04:41:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47627 states to 47627 states and 54547 transitions. [2021-12-17 04:41:09,412 INFO L78 Accepts]: Start accepts. Automaton has 47627 states and 54547 transitions. Word has length 232 [2021-12-17 04:41:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:09,414 INFO L470 AbstractCegarLoop]: Abstraction has 47627 states and 54547 transitions. [2021-12-17 04:41:09,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2021-12-17 04:41:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 47627 states and 54547 transitions. [2021-12-17 04:41:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-12-17 04:41:09,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:09,417 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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] [2021-12-17 04:41:09,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 04:41:09,419 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1842726803, now seen corresponding path program 1 times [2021-12-17 04:41:09,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:09,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908341481] [2021-12-17 04:41:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:09,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-17 04:41:09,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:09,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908341481] [2021-12-17 04:41:09,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908341481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:09,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:41:09,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:41:09,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308549970] [2021-12-17 04:41:09,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:09,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:09,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:09,520 INFO L87 Difference]: Start difference. First operand 47627 states and 54547 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2021-12-17 04:41:12,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:12,721 INFO L93 Difference]: Finished difference Result 125936 states and 145285 transitions. [2021-12-17 04:41:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:12,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 248 [2021-12-17 04:41:12,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:12,841 INFO L225 Difference]: With dead ends: 125936 [2021-12-17 04:41:12,842 INFO L226 Difference]: Without dead ends: 79098 [2021-12-17 04:41:12,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:12,872 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 844 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:12,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 982 Invalid, 3181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-17 04:41:12,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79098 states. [2021-12-17 04:41:13,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79098 to 73581. [2021-12-17 04:41:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73581 states, 73580 states have (on average 1.1192851318293013) internal successors, (82357), 73580 states have internal predecessors, (82357), 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) [2021-12-17 04:41:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73581 states to 73581 states and 82357 transitions. [2021-12-17 04:41:13,715 INFO L78 Accepts]: Start accepts. Automaton has 73581 states and 82357 transitions. Word has length 248 [2021-12-17 04:41:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:13,715 INFO L470 AbstractCegarLoop]: Abstraction has 73581 states and 82357 transitions. [2021-12-17 04:41:13,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2021-12-17 04:41:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 73581 states and 82357 transitions. [2021-12-17 04:41:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-12-17 04:41:13,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:13,718 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:41:13,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 04:41:13,719 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:13,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash 669304523, now seen corresponding path program 1 times [2021-12-17 04:41:13,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:13,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358779577] [2021-12-17 04:41:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:13,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-17 04:41:13,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:13,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358779577] [2021-12-17 04:41:13,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358779577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:13,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:41:13,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:41:13,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655872056] [2021-12-17 04:41:13,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:13,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:41:13,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:13,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:41:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:41:13,810 INFO L87 Difference]: Start difference. First operand 73581 states and 82357 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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) [2021-12-17 04:41:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:20,640 INFO L93 Difference]: Finished difference Result 198523 states and 222871 transitions. [2021-12-17 04:41:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:41:20,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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 301 [2021-12-17 04:41:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:20,922 INFO L225 Difference]: With dead ends: 198523 [2021-12-17 04:41:20,923 INFO L226 Difference]: Without dead ends: 125731 [2021-12-17 04:41:20,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:41:20,970 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1704 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 6632 mSolverCounterSat, 1039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 7671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1039 IncrementalHoareTripleChecker+Valid, 6632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:20,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1704 Valid, 807 Invalid, 7671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1039 Valid, 6632 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-12-17 04:41:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125731 states. [2021-12-17 04:41:22,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125731 to 123246. [2021-12-17 04:41:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123246 states, 123245 states have (on average 1.1143575804292263) internal successors, (137339), 123245 states have internal predecessors, (137339), 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) [2021-12-17 04:41:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123246 states to 123246 states and 137339 transitions. [2021-12-17 04:41:22,541 INFO L78 Accepts]: Start accepts. Automaton has 123246 states and 137339 transitions. Word has length 301 [2021-12-17 04:41:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:22,542 INFO L470 AbstractCegarLoop]: Abstraction has 123246 states and 137339 transitions. [2021-12-17 04:41:22,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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) [2021-12-17 04:41:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 123246 states and 137339 transitions. [2021-12-17 04:41:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-12-17 04:41:22,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:22,546 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:41:22,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 04:41:22,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:22,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash 143314799, now seen corresponding path program 1 times [2021-12-17 04:41:22,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:22,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669012219] [2021-12-17 04:41:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:22,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-17 04:41:22,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:22,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669012219] [2021-12-17 04:41:22,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669012219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:22,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:41:22,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:41:22,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490181277] [2021-12-17 04:41:22,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:22,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:22,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:22,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:22,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:22,644 INFO L87 Difference]: Start difference. First operand 123246 states and 137339 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2021-12-17 04:41:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:25,843 INFO L93 Difference]: Finished difference Result 248102 states and 276328 transitions. [2021-12-17 04:41:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 344 [2021-12-17 04:41:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:26,009 INFO L225 Difference]: With dead ends: 248102 [2021-12-17 04:41:26,009 INFO L226 Difference]: Without dead ends: 124855 [2021-12-17 04:41:26,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:26,072 INFO L933 BasicCegarLoop]: 1826 mSDtfsCounter, 748 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:26,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 1965 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 04:41:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124855 states. [2021-12-17 04:41:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124855 to 120092. [2021-12-17 04:41:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120092 states, 120091 states have (on average 1.1030968182461633) internal successors, (132472), 120091 states have internal predecessors, (132472), 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) [2021-12-17 04:41:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120092 states to 120092 states and 132472 transitions. [2021-12-17 04:41:27,464 INFO L78 Accepts]: Start accepts. Automaton has 120092 states and 132472 transitions. Word has length 344 [2021-12-17 04:41:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:27,465 INFO L470 AbstractCegarLoop]: Abstraction has 120092 states and 132472 transitions. [2021-12-17 04:41:27,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2021-12-17 04:41:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 120092 states and 132472 transitions. [2021-12-17 04:41:27,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-12-17 04:41:27,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:27,468 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-17 04:41:27,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 04:41:27,468 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:27,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash -709045718, now seen corresponding path program 1 times [2021-12-17 04:41:27,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:27,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255626330] [2021-12-17 04:41:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:27,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2021-12-17 04:41:27,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:27,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255626330] [2021-12-17 04:41:27,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255626330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:27,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:41:27,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:41:27,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756932670] [2021-12-17 04:41:27,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:27,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:27,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:27,572 INFO L87 Difference]: Start difference. First operand 120092 states and 132472 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2021-12-17 04:41:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:31,797 INFO L93 Difference]: Finished difference Result 283671 states and 315421 transitions. [2021-12-17 04:41:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:31,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 347 [2021-12-17 04:41:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:32,057 INFO L225 Difference]: With dead ends: 283671 [2021-12-17 04:41:32,057 INFO L226 Difference]: Without dead ends: 176969 [2021-12-17 04:41:32,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:32,311 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1018 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 3726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:32,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 667 Invalid, 3726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 04:41:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176969 states. [2021-12-17 04:41:33,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176969 to 150062. [2021-12-17 04:41:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150062 states, 150061 states have (on average 1.1077961628937565) internal successors, (166237), 150061 states have internal predecessors, (166237), 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) [2021-12-17 04:41:34,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150062 states to 150062 states and 166237 transitions. [2021-12-17 04:41:34,259 INFO L78 Accepts]: Start accepts. Automaton has 150062 states and 166237 transitions. Word has length 347 [2021-12-17 04:41:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:34,260 INFO L470 AbstractCegarLoop]: Abstraction has 150062 states and 166237 transitions. [2021-12-17 04:41:34,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2021-12-17 04:41:34,261 INFO L276 IsEmpty]: Start isEmpty. Operand 150062 states and 166237 transitions. [2021-12-17 04:41:34,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-12-17 04:41:34,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:34,266 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:41:34,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 04:41:34,266 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash 651711769, now seen corresponding path program 1 times [2021-12-17 04:41:34,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:34,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012048654] [2021-12-17 04:41:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:34,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 257 proven. 110 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-17 04:41:34,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:34,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012048654] [2021-12-17 04:41:34,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012048654] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:41:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430510209] [2021-12-17 04:41:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:34,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:41:34,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:41:34,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:41:34,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 04:41:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:34,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:41:35,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:41:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-17 04:41:35,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:41:35,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430510209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:35,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:41:35,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-17 04:41:35,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785840837] [2021-12-17 04:41:35,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:35,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:35,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:35,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:35,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:41:35,477 INFO L87 Difference]: Start difference. First operand 150062 states and 166237 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-12-17 04:41:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:38,796 INFO L93 Difference]: Finished difference Result 302463 states and 335645 transitions. [2021-12-17 04:41:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:38,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 373 [2021-12-17 04:41:38,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:38,983 INFO L225 Difference]: With dead ends: 302463 [2021-12-17 04:41:38,983 INFO L226 Difference]: Without dead ends: 163423 [2021-12-17 04:41:39,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:41:39,043 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 885 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:39,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 1848 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 04:41:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163423 states. [2021-12-17 04:41:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163423 to 153184. [2021-12-17 04:41:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153184 states, 153183 states have (on average 1.1044306483095383) internal successors, (169180), 153183 states have internal predecessors, (169180), 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) [2021-12-17 04:41:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153184 states to 153184 states and 169180 transitions. [2021-12-17 04:41:40,922 INFO L78 Accepts]: Start accepts. Automaton has 153184 states and 169180 transitions. Word has length 373 [2021-12-17 04:41:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:40,922 INFO L470 AbstractCegarLoop]: Abstraction has 153184 states and 169180 transitions. [2021-12-17 04:41:40,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-12-17 04:41:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 153184 states and 169180 transitions. [2021-12-17 04:41:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-12-17 04:41:40,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:40,929 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:41:40,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 04:41:41,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 04:41:41,144 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:41,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1045689510, now seen corresponding path program 1 times [2021-12-17 04:41:41,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:41,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940227017] [2021-12-17 04:41:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:41,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-17 04:41:41,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:41,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940227017] [2021-12-17 04:41:41,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940227017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:41,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:41:41,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:41:41,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334327335] [2021-12-17 04:41:41,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:41,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:41,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:41,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:41,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:41,632 INFO L87 Difference]: Start difference. First operand 153184 states and 169180 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2021-12-17 04:41:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:45,024 INFO L93 Difference]: Finished difference Result 307943 states and 339901 transitions. [2021-12-17 04:41:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:45,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 417 [2021-12-17 04:41:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:45,254 INFO L225 Difference]: With dead ends: 307943 [2021-12-17 04:41:45,254 INFO L226 Difference]: Without dead ends: 155548 [2021-12-17 04:41:45,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:45,308 INFO L933 BasicCegarLoop]: 1356 mSDtfsCounter, 897 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:45,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 1436 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 04:41:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155548 states. [2021-12-17 04:41:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155548 to 152385. [2021-12-17 04:41:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152385 states, 152384 states have (on average 1.0819705480890383) internal successors, (164875), 152384 states have internal predecessors, (164875), 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) [2021-12-17 04:41:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152385 states to 152385 states and 164875 transitions. [2021-12-17 04:41:47,160 INFO L78 Accepts]: Start accepts. Automaton has 152385 states and 164875 transitions. Word has length 417 [2021-12-17 04:41:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:47,161 INFO L470 AbstractCegarLoop]: Abstraction has 152385 states and 164875 transitions. [2021-12-17 04:41:47,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2021-12-17 04:41:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 152385 states and 164875 transitions. [2021-12-17 04:41:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-12-17 04:41:47,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:47,167 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:41:47,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 04:41:47,168 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:47,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1410029894, now seen corresponding path program 1 times [2021-12-17 04:41:47,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:47,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549659076] [2021-12-17 04:41:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:47,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 400 proven. 110 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-17 04:41:47,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:47,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549659076] [2021-12-17 04:41:47,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549659076] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:41:47,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645472390] [2021-12-17 04:41:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:47,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:41:47,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:41:47,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:41:47,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 04:41:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:47,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:41:47,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:41:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-17 04:41:48,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:41:48,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645472390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:48,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:41:48,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-17 04:41:48,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648713255] [2021-12-17 04:41:48,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:48,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:48,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:41:48,069 INFO L87 Difference]: Start difference. First operand 152385 states and 164875 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-12-17 04:41:51,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:51,503 INFO L93 Difference]: Finished difference Result 292165 states and 316018 transitions. [2021-12-17 04:41:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:51,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 443 [2021-12-17 04:41:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:52,041 INFO L225 Difference]: With dead ends: 292165 [2021-12-17 04:41:52,042 INFO L226 Difference]: Without dead ends: 140569 [2021-12-17 04:41:52,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:41:52,104 INFO L933 BasicCegarLoop]: 1324 mSDtfsCounter, 1091 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:52,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 1400 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 04:41:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140569 states. [2021-12-17 04:41:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140569 to 139778. [2021-12-17 04:41:53,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139778 states, 139777 states have (on average 1.0623636220551307) internal successors, (148494), 139777 states have internal predecessors, (148494), 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) [2021-12-17 04:41:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139778 states to 139778 states and 148494 transitions. [2021-12-17 04:41:53,573 INFO L78 Accepts]: Start accepts. Automaton has 139778 states and 148494 transitions. Word has length 443 [2021-12-17 04:41:53,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:53,574 INFO L470 AbstractCegarLoop]: Abstraction has 139778 states and 148494 transitions. [2021-12-17 04:41:53,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-12-17 04:41:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 139778 states and 148494 transitions. [2021-12-17 04:41:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2021-12-17 04:41:53,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:53,590 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-12-17 04:41:53,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 04:41:53,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-17 04:41:53,792 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:53,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:53,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1100417008, now seen corresponding path program 1 times [2021-12-17 04:41:53,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:53,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409293537] [2021-12-17 04:41:53,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:53,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-12-17 04:41:53,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:53,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409293537] [2021-12-17 04:41:53,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409293537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:53,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:41:53,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:41:53,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238590772] [2021-12-17 04:41:53,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:53,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:53,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:53,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:53,965 INFO L87 Difference]: Start difference. First operand 139778 states and 148494 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2021-12-17 04:41:57,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:57,870 INFO L93 Difference]: Finished difference Result 323643 states and 345364 transitions. [2021-12-17 04:41:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:57,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 552 [2021-12-17 04:41:57,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:58,406 INFO L225 Difference]: With dead ends: 323643 [2021-12-17 04:41:58,407 INFO L226 Difference]: Without dead ends: 181503 [2021-12-17 04:41:58,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:58,434 INFO L933 BasicCegarLoop]: 1705 mSDtfsCounter, 783 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:58,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 1844 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-17 04:41:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181503 states. [2021-12-17 04:41:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181503 to 178334. [2021-12-17 04:42:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178334 states, 178333 states have (on average 1.05478514913112) internal successors, (188103), 178333 states have internal predecessors, (188103), 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) [2021-12-17 04:42:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178334 states to 178334 states and 188103 transitions. [2021-12-17 04:42:00,635 INFO L78 Accepts]: Start accepts. Automaton has 178334 states and 188103 transitions. Word has length 552 [2021-12-17 04:42:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:42:00,636 INFO L470 AbstractCegarLoop]: Abstraction has 178334 states and 188103 transitions. [2021-12-17 04:42:00,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2021-12-17 04:42:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 178334 states and 188103 transitions. [2021-12-17 04:42:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2021-12-17 04:42:00,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:42:00,654 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:42:00,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 04:42:00,654 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:42:00,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:42:00,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1835777825, now seen corresponding path program 1 times [2021-12-17 04:42:00,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:42:00,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802311793] [2021-12-17 04:42:00,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:42:00,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:42:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:42:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 880 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-12-17 04:42:00,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:42:00,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802311793] [2021-12-17 04:42:00,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802311793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:42:00,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:42:00,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:42:00,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819828682] [2021-12-17 04:42:00,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:42:00,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:42:00,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:42:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:42:00,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:42:00,796 INFO L87 Difference]: Start difference. First operand 178334 states and 188103 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2021-12-17 04:42:04,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:42:04,623 INFO L93 Difference]: Finished difference Result 399982 states and 423909 transitions. [2021-12-17 04:42:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:42:04,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 561 [2021-12-17 04:42:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:42:04,981 INFO L225 Difference]: With dead ends: 399982 [2021-12-17 04:42:04,981 INFO L226 Difference]: Without dead ends: 239761 [2021-12-17 04:42:05,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:42:05,088 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1004 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:42:05,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 645 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 2445 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 04:42:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239761 states.