./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/Problem14_label55.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 9bd683bba4a6f80276f3e47665317b71beb0e1362c26cf1e7ce2f4cc203cd812 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 09:48:47,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 09:48:47,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 09:48:47,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 09:48:47,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 09:48:47,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 09:48:47,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 09:48:47,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 09:48:47,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 09:48:47,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 09:48:47,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 09:48:47,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 09:48:47,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 09:48:47,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 09:48:47,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 09:48:47,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 09:48:47,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 09:48:47,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 09:48:47,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 09:48:47,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 09:48:47,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 09:48:47,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 09:48:47,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 09:48:47,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 09:48:47,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 09:48:47,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 09:48:47,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 09:48:47,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 09:48:47,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 09:48:47,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 09:48:47,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 09:48:47,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 09:48:47,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 09:48:47,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 09:48:47,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 09:48:47,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 09:48:47,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 09:48:47,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 09:48:47,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 09:48:47,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 09:48:47,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 09:48:47,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 09:48:47,376 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 09:48:47,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 09:48:47,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 09:48:47,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 09:48:47,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 09:48:47,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 09:48:47,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 09:48:47,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 09:48:47,378 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 09:48:47,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 09:48:47,379 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 09:48:47,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 09:48:47,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 09:48:47,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 09:48:47,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 09:48:47,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 09:48:47,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 09:48:47,380 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 09:48:47,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 09:48:47,380 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 09:48:47,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 09:48:47,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 09:48:47,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 09:48:47,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 09:48:47,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:48:47,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 09:48:47,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 09:48:47,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 09:48:47,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 09:48:47,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 09:48:47,383 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 09:48:47,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 09:48:47,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 09:48:47,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 09:48:47,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bd683bba4a6f80276f3e47665317b71beb0e1362c26cf1e7ce2f4cc203cd812 [2021-12-15 09:48:47,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 09:48:47,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 09:48:47,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 09:48:47,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 09:48:47,621 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 09:48:47,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label55.c [2021-12-15 09:48:47,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fea36f4/f4799b2c6ca643baa8486d89899a6dbc/FLAG88d4cc0cf [2021-12-15 09:48:48,141 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 09:48:48,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label55.c [2021-12-15 09:48:48,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fea36f4/f4799b2c6ca643baa8486d89899a6dbc/FLAG88d4cc0cf [2021-12-15 09:48:48,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8fea36f4/f4799b2c6ca643baa8486d89899a6dbc [2021-12-15 09:48:48,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 09:48:48,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 09:48:48,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 09:48:48,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 09:48:48,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 09:48:48,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c275f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48, skipping insertion in model container [2021-12-15 09:48:48,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 09:48:48,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 09:48:48,387 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/Problem14_label55.c[5831,5844] [2021-12-15 09:48:48,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:48:48,488 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 09:48:48,503 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/Problem14_label55.c[5831,5844] [2021-12-15 09:48:48,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:48:48,575 INFO L208 MainTranslator]: Completed translation [2021-12-15 09:48:48,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48 WrapperNode [2021-12-15 09:48:48,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 09:48:48,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 09:48:48,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 09:48:48,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 09:48:48,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,670 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2021-12-15 09:48:48,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 09:48:48,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 09:48:48,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 09:48:48,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 09:48:48,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 09:48:48,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 09:48:48,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 09:48:48,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 09:48:48,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (1/1) ... [2021-12-15 09:48:48,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:48:48,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:48:48,799 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) [2021-12-15 09:48:48,832 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 [2021-12-15 09:48:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 09:48:48,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 09:48:48,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 09:48:48,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 09:48:48,898 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 09:48:48,899 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 09:48:49,688 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 09:48:49,697 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 09:48:49,697 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 09:48:49,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:48:49 BoogieIcfgContainer [2021-12-15 09:48:49,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 09:48:49,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 09:48:49,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 09:48:49,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 09:48:49,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:48:48" (1/3) ... [2021-12-15 09:48:49,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f76b533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:48:49, skipping insertion in model container [2021-12-15 09:48:49,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:48:48" (2/3) ... [2021-12-15 09:48:49,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f76b533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:48:49, skipping insertion in model container [2021-12-15 09:48:49,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:48:49" (3/3) ... [2021-12-15 09:48:49,706 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label55.c [2021-12-15 09:48:49,710 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 09:48:49,710 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 09:48:49,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 09:48:49,762 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 [2021-12-15 09:48:49,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 09:48:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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) [2021-12-15 09:48:49,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-15 09:48:49,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:48:49,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:48:49,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:48:49,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:48:49,798 INFO L85 PathProgramCache]: Analyzing trace with hash -66916295, now seen corresponding path program 1 times [2021-12-15 09:48:49,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:48:49,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781072961] [2021-12-15 09:48:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:49,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:48:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:48:50,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:48:50,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781072961] [2021-12-15 09:48:50,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781072961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:48:50,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:48:50,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:48:50,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141237270] [2021-12-15 09:48:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:48:50,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:48:50,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:48:50,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:48:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:48:50,078 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-12-15 09:48:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:48:51,198 INFO L93 Difference]: Finished difference Result 852 states and 1560 transitions. [2021-12-15 09:48:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:48:51,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-12-15 09:48:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:48:51,219 INFO L225 Difference]: With dead ends: 852 [2021-12-15 09:48:51,219 INFO L226 Difference]: Without dead ends: 538 [2021-12-15 09:48:51,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 09:48:51,225 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 518 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 09:48:51,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 44 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 09:48:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-15 09:48:51,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-12-15 09:48:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.4487895716945995) internal successors, (778), 537 states have internal predecessors, (778), 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) [2021-12-15 09:48:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 778 transitions. [2021-12-15 09:48:51,270 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 778 transitions. Word has length 57 [2021-12-15 09:48:51,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:48:51,271 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 778 transitions. [2021-12-15 09:48:51,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-12-15 09:48:51,271 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 778 transitions. [2021-12-15 09:48:51,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-15 09:48:51,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:48:51,277 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:48:51,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 09:48:51,278 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:48:51,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:48:51,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1784234753, now seen corresponding path program 1 times [2021-12-15 09:48:51,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:48:51,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670287902] [2021-12-15 09:48:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:51,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:48:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-15 09:48:51,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:48:51,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670287902] [2021-12-15 09:48:51,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670287902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:48:51,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:48:51,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:48:51,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527634132] [2021-12-15 09:48:51,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:48:51,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:48:51,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:48:51,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:48:51,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:48:51,354 INFO L87 Difference]: Start difference. First operand 538 states and 778 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2021-12-15 09:48:51,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:48:51,899 INFO L93 Difference]: Finished difference Result 1074 states and 1656 transitions. [2021-12-15 09:48:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:48:51,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 205 [2021-12-15 09:48:51,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:48:51,913 INFO L225 Difference]: With dead ends: 1074 [2021-12-15 09:48:51,913 INFO L226 Difference]: Without dead ends: 716 [2021-12-15 09:48:51,914 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 [2021-12-15 09:48:51,915 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 125 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 09:48:51,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 57 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 09:48:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-12-15 09:48:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-12-15 09:48:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.353846153846154) internal successors, (968), 715 states have internal predecessors, (968), 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) [2021-12-15 09:48:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 968 transitions. [2021-12-15 09:48:51,931 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 968 transitions. Word has length 205 [2021-12-15 09:48:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:48:51,931 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 968 transitions. [2021-12-15 09:48:51,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2021-12-15 09:48:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 968 transitions. [2021-12-15 09:48:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-15 09:48:51,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:48:51,939 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-12-15 09:48:51,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 09:48:51,940 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:48:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:48:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1832078, now seen corresponding path program 1 times [2021-12-15 09:48:51,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:48:51,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877170950] [2021-12-15 09:48:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:51,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:48:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-15 09:48:52,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:48:52,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877170950] [2021-12-15 09:48:52,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877170950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:48:52,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:48:52,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:48:52,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118365050] [2021-12-15 09:48:52,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:48:52,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:48:52,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:48:52,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:48:52,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:48:52,049 INFO L87 Difference]: Start difference. First operand 716 states and 968 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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) [2021-12-15 09:48:52,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:48:52,616 INFO L93 Difference]: Finished difference Result 1637 states and 2268 transitions. [2021-12-15 09:48:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:48:52,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 228 [2021-12-15 09:48:52,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:48:52,620 INFO L225 Difference]: With dead ends: 1637 [2021-12-15 09:48:52,620 INFO L226 Difference]: Without dead ends: 1072 [2021-12-15 09:48:52,621 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 [2021-12-15 09:48:52,622 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 112 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 09:48:52,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 113 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 09:48:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-12-15 09:48:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 894. [2021-12-15 09:48:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1724524076147815) internal successors, (1047), 893 states have internal predecessors, (1047), 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) [2021-12-15 09:48:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1047 transitions. [2021-12-15 09:48:52,635 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1047 transitions. Word has length 228 [2021-12-15 09:48:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:48:52,636 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1047 transitions. [2021-12-15 09:48:52,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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) [2021-12-15 09:48:52,636 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1047 transitions. [2021-12-15 09:48:52,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-12-15 09:48:52,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:48:52,640 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:48:52,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 09:48:52,640 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:48:52,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:48:52,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1050495734, now seen corresponding path program 1 times [2021-12-15 09:48:52,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:48:52,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968158607] [2021-12-15 09:48:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:52,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:48:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-15 09:48:52,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:48:52,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968158607] [2021-12-15 09:48:52,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968158607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:48:52,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:48:52,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:48:52,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142113348] [2021-12-15 09:48:52,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:48:52,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:48:52,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:48:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:48:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:48:52,826 INFO L87 Difference]: Start difference. First operand 894 states and 1047 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2021-12-15 09:48:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:48:53,251 INFO L93 Difference]: Finished difference Result 2142 states and 2597 transitions. [2021-12-15 09:48:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:48:53,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 359 [2021-12-15 09:48:53,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:48:53,255 INFO L225 Difference]: With dead ends: 2142 [2021-12-15 09:48:53,255 INFO L226 Difference]: Without dead ends: 1428 [2021-12-15 09:48:53,256 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 [2021-12-15 09:48:53,257 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 90 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:48:53,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 76 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 09:48:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-12-15 09:48:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2021-12-15 09:48:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.142957252978276) internal successors, (1631), 1427 states have internal predecessors, (1631), 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) [2021-12-15 09:48:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1631 transitions. [2021-12-15 09:48:53,275 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1631 transitions. Word has length 359 [2021-12-15 09:48:53,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:48:53,276 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1631 transitions. [2021-12-15 09:48:53,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2021-12-15 09:48:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1631 transitions. [2021-12-15 09:48:53,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-12-15 09:48:53,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:48:53,280 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:48:53,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 09:48:53,281 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:48:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:48:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1572710450, now seen corresponding path program 1 times [2021-12-15 09:48:53,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:48:53,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789217948] [2021-12-15 09:48:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:53,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:48:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 372 proven. 23 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-15 09:48:53,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:48:53,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789217948] [2021-12-15 09:48:53,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789217948] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:48:53,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912737133] [2021-12-15 09:48:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:53,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:48:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:48:53,412 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) [2021-12-15 09:48:53,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 09:48:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:53,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 09:48:53,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:48:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-12-15 09:48:53,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:48:53,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912737133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:48:53,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:48:53,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-15 09:48:53,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674838830] [2021-12-15 09:48:53,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:48:53,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:48:53,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:48:53,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:48:53,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:48:53,962 INFO L87 Difference]: Start difference. First operand 1428 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2021-12-15 09:48:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:48:54,358 INFO L93 Difference]: Finished difference Result 3388 states and 3946 transitions. [2021-12-15 09:48:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:48:54,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 383 [2021-12-15 09:48:54,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:48:54,366 INFO L225 Difference]: With dead ends: 3388 [2021-12-15 09:48:54,366 INFO L226 Difference]: Without dead ends: 2140 [2021-12-15 09:48:54,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:48:54,368 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 124 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:48:54,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 265 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 09:48:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-12-15 09:48:54,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1962. [2021-12-15 09:48:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.1274859765425804) internal successors, (2211), 1961 states have internal predecessors, (2211), 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) [2021-12-15 09:48:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2211 transitions. [2021-12-15 09:48:54,397 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2211 transitions. Word has length 383 [2021-12-15 09:48:54,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:48:54,398 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2211 transitions. [2021-12-15 09:48:54,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2021-12-15 09:48:54,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2211 transitions. [2021-12-15 09:48:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-12-15 09:48:54,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:48:54,404 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:48:54,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 09:48:54,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:48:54,622 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:48:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:48:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1098575487, now seen corresponding path program 1 times [2021-12-15 09:48:54,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:48:54,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295853249] [2021-12-15 09:48:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:54,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:48:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 567 proven. 23 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-15 09:48:54,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:48:54,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295853249] [2021-12-15 09:48:54,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295853249] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:48:54,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51241193] [2021-12-15 09:48:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:54,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:48:54,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:48:54,836 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) [2021-12-15 09:48:54,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 09:48:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:54,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 09:48:54,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:48:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-12-15 09:48:55,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:48:55,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51241193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:48:55,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:48:55,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-15 09:48:55,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723440117] [2021-12-15 09:48:55,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:48:55,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:48:55,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:48:55,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:48:55,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:48:55,416 INFO L87 Difference]: Start difference. First operand 1962 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2021-12-15 09:48:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:48:55,839 INFO L93 Difference]: Finished difference Result 4456 states and 5106 transitions. [2021-12-15 09:48:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:48:55,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 482 [2021-12-15 09:48:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:48:55,847 INFO L225 Difference]: With dead ends: 4456 [2021-12-15 09:48:55,847 INFO L226 Difference]: Without dead ends: 2674 [2021-12-15 09:48:55,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:48:55,854 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 124 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:48:55,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 245 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 09:48:55,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-12-15 09:48:55,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2496. [2021-12-15 09:48:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.1230460921843688) internal successors, (2802), 2495 states have internal predecessors, (2802), 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) [2021-12-15 09:48:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2802 transitions. [2021-12-15 09:48:55,892 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2802 transitions. Word has length 482 [2021-12-15 09:48:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:48:55,895 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 2802 transitions. [2021-12-15 09:48:55,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2021-12-15 09:48:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2802 transitions. [2021-12-15 09:48:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-12-15 09:48:55,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:48:55,902 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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] [2021-12-15 09:48:55,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-15 09:48:56,120 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,SelfDestructingSolverStorable5 [2021-12-15 09:48:56,121 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:48:56,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:48:56,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1066278354, now seen corresponding path program 1 times [2021-12-15 09:48:56,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:48:56,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563823901] [2021-12-15 09:48:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:56,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:48:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 605 proven. 23 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-15 09:48:56,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:48:56,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563823901] [2021-12-15 09:48:56,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563823901] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:48:56,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422854434] [2021-12-15 09:48:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:56,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:48:56,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:48:56,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:48:56,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 09:48:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:56,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 09:48:56,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:48:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2021-12-15 09:48:56,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:48:56,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422854434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:48:56,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:48:56,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-15 09:48:56,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551560463] [2021-12-15 09:48:56,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:48:56,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:48:56,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:48:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:48:56,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:48:56,885 INFO L87 Difference]: Start difference. First operand 2496 states and 2802 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2021-12-15 09:48:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:48:57,292 INFO L93 Difference]: Finished difference Result 4812 states and 5423 transitions. [2021-12-15 09:48:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:48:57,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 501 [2021-12-15 09:48:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:48:57,303 INFO L225 Difference]: With dead ends: 4812 [2021-12-15 09:48:57,303 INFO L226 Difference]: Without dead ends: 2496 [2021-12-15 09:48:57,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:48:57,306 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 127 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:48:57,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 199 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 09:48:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-12-15 09:48:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2140. [2021-12-15 09:48:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.1187470780738662) internal successors, (2393), 2139 states have internal predecessors, (2393), 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) [2021-12-15 09:48:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2393 transitions. [2021-12-15 09:48:57,338 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2393 transitions. Word has length 501 [2021-12-15 09:48:57,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:48:57,338 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2393 transitions. [2021-12-15 09:48:57,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2021-12-15 09:48:57,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2393 transitions. [2021-12-15 09:48:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-12-15 09:48:57,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:48:57,357 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:48:57,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 09:48:57,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:48:57,584 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:48:57,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:48:57,585 INFO L85 PathProgramCache]: Analyzing trace with hash 503106993, now seen corresponding path program 1 times [2021-12-15 09:48:57,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:48:57,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923626545] [2021-12-15 09:48:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:57,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:48:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 624 proven. 23 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-12-15 09:48:57,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:48:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923626545] [2021-12-15 09:48:57,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923626545] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:48:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436076766] [2021-12-15 09:48:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:57,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:48:57,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:48:57,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:48:57,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 09:48:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:57,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 09:48:57,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:48:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 647 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-12-15 09:48:58,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:48:58,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436076766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:48:58,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:48:58,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-15 09:48:58,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400485587] [2021-12-15 09:48:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:48:58,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:48:58,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:48:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:48:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-15 09:48:58,745 INFO L87 Difference]: Start difference. First operand 2140 states and 2393 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 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) [2021-12-15 09:48:59,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:48:59,208 INFO L93 Difference]: Finished difference Result 4634 states and 5207 transitions. [2021-12-15 09:48:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:48:59,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 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 515 [2021-12-15 09:48:59,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:48:59,214 INFO L225 Difference]: With dead ends: 4634 [2021-12-15 09:48:59,214 INFO L226 Difference]: Without dead ends: 2496 [2021-12-15 09:48:59,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-15 09:48:59,217 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 211 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:48:59,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 51 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 09:48:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-12-15 09:48:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2318. [2021-12-15 09:48:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.1152352179542513) internal successors, (2584), 2317 states have internal predecessors, (2584), 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) [2021-12-15 09:48:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2584 transitions. [2021-12-15 09:48:59,249 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2584 transitions. Word has length 515 [2021-12-15 09:48:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:48:59,249 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2584 transitions. [2021-12-15 09:48:59,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 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) [2021-12-15 09:48:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2584 transitions. [2021-12-15 09:48:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2021-12-15 09:48:59,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:48:59,254 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:48:59,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-15 09:48:59,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:48:59,467 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:48:59,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:48:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash -277459430, now seen corresponding path program 1 times [2021-12-15 09:48:59,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:48:59,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465785618] [2021-12-15 09:48:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:48:59,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:48:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:48:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 802 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2021-12-15 09:48:59,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:48:59,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465785618] [2021-12-15 09:48:59,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465785618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:48:59,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:48:59,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:48:59,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455477608] [2021-12-15 09:48:59,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:48:59,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:48:59,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:48:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:48:59,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:48:59,598 INFO L87 Difference]: Start difference. First operand 2318 states and 2584 transitions. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 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) [2021-12-15 09:48:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:48:59,997 INFO L93 Difference]: Finished difference Result 4485 states and 5016 transitions. [2021-12-15 09:48:59,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:48:59,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 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 571 [2021-12-15 09:48:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:00,003 INFO L225 Difference]: With dead ends: 4485 [2021-12-15 09:49:00,003 INFO L226 Difference]: Without dead ends: 2318 [2021-12-15 09:49:00,006 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 [2021-12-15 09:49:00,006 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 141 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:00,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 17 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 09:49:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-15 09:49:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2318. [2021-12-15 09:49:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.0845921450151057) internal successors, (2513), 2317 states have internal predecessors, (2513), 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) [2021-12-15 09:49:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2513 transitions. [2021-12-15 09:49:00,032 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2513 transitions. Word has length 571 [2021-12-15 09:49:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:00,033 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2513 transitions. [2021-12-15 09:49:00,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 3 states have internal predecessors, (257), 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) [2021-12-15 09:49:00,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2513 transitions. [2021-12-15 09:49:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-12-15 09:49:00,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:00,038 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:49:00,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 09:49:00,038 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:00,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash 913757305, now seen corresponding path program 1 times [2021-12-15 09:49:00,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:00,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490356528] [2021-12-15 09:49:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:00,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 948 proven. 11 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-12-15 09:49:00,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:00,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490356528] [2021-12-15 09:49:00,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490356528] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:49:00,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146079647] [2021-12-15 09:49:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:00,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:49:00,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:49:00,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 09:49:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:00,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 09:49:00,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:49:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 959 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-12-15 09:49:02,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:49:02,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146079647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:02,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:49:02,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-12-15 09:49:02,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743767538] [2021-12-15 09:49:02,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:02,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 09:49:02,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:02,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 09:49:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-15 09:49:02,287 INFO L87 Difference]: Start difference. First operand 2318 states and 2513 transitions. Second operand has 5 states, 5 states have (on average 67.0) internal successors, (335), 4 states have internal predecessors, (335), 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) [2021-12-15 09:49:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:02,657 INFO L93 Difference]: Finished difference Result 4456 states and 4845 transitions. [2021-12-15 09:49:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:49:02,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.0) internal successors, (335), 4 states have internal predecessors, (335), 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 597 [2021-12-15 09:49:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:02,664 INFO L225 Difference]: With dead ends: 4456 [2021-12-15 09:49:02,664 INFO L226 Difference]: Without dead ends: 2318 [2021-12-15 09:49:02,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-15 09:49:02,667 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 333 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:02,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 51 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 09:49:02,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-15 09:49:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2140. [2021-12-15 09:49:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.0799438990182328) internal successors, (2310), 2139 states have internal predecessors, (2310), 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) [2021-12-15 09:49:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2310 transitions. [2021-12-15 09:49:02,693 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2310 transitions. Word has length 597 [2021-12-15 09:49:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:02,694 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2310 transitions. [2021-12-15 09:49:02,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.0) internal successors, (335), 4 states have internal predecessors, (335), 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) [2021-12-15 09:49:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2310 transitions. [2021-12-15 09:49:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2021-12-15 09:49:02,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:02,699 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:49:02,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-15 09:49:02,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-15 09:49:02,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1936080203, now seen corresponding path program 1 times [2021-12-15 09:49:02,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:02,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895321154] [2021-12-15 09:49:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:02,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1349 backedges. 887 proven. 93 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-12-15 09:49:03,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:03,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895321154] [2021-12-15 09:49:03,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895321154] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:49:03,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438529013] [2021-12-15 09:49:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:03,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:03,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:49:03,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:49:03,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 09:49:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:03,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 09:49:03,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:49:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1349 backedges. 980 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-12-15 09:49:03,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:49:03,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438529013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:03,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:49:03,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-15 09:49:03,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569299703] [2021-12-15 09:49:03,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:03,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:49:03,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:49:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:49:03,905 INFO L87 Difference]: Start difference. First operand 2140 states and 2310 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2021-12-15 09:49:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:04,185 INFO L93 Difference]: Finished difference Result 5168 states and 5623 transitions. [2021-12-15 09:49:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:49:04,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 671 [2021-12-15 09:49:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:04,192 INFO L225 Difference]: With dead ends: 5168 [2021-12-15 09:49:04,192 INFO L226 Difference]: Without dead ends: 3208 [2021-12-15 09:49:04,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:49:04,194 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:04,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 09:49:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-12-15 09:49:04,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3208. [2021-12-15 09:49:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0739008419083256) internal successors, (3444), 3207 states have internal predecessors, (3444), 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) [2021-12-15 09:49:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3444 transitions. [2021-12-15 09:49:04,226 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3444 transitions. Word has length 671 [2021-12-15 09:49:04,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:04,227 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3444 transitions. [2021-12-15 09:49:04,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2021-12-15 09:49:04,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3444 transitions. [2021-12-15 09:49:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2021-12-15 09:49:04,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:04,233 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 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, 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] [2021-12-15 09:49:04,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 09:49:04,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:04,450 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash -264748761, now seen corresponding path program 1 times [2021-12-15 09:49:04,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:04,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826656469] [2021-12-15 09:49:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:04,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1997 backedges. 1473 proven. 155 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-12-15 09:49:04,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:04,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826656469] [2021-12-15 09:49:04,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826656469] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:49:04,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281250401] [2021-12-15 09:49:04,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:04,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:04,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:49:04,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:49:04,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 09:49:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:04,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 09:49:04,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:49:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1997 backedges. 1473 proven. 155 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-12-15 09:49:05,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 09:49:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1997 backedges. 1473 proven. 155 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-12-15 09:49:06,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281250401] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 09:49:06,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 09:49:06,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-15 09:49:06,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911265496] [2021-12-15 09:49:06,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 09:49:06,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 09:49:06,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 09:49:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:49:06,931 INFO L87 Difference]: Start difference. First operand 3208 states and 3444 transitions. Second operand has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 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) [2021-12-15 09:49:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:07,683 INFO L93 Difference]: Finished difference Result 7660 states and 8253 transitions. [2021-12-15 09:49:07,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 09:49:07,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 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 826 [2021-12-15 09:49:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:07,694 INFO L225 Difference]: With dead ends: 7660 [2021-12-15 09:49:07,694 INFO L226 Difference]: Without dead ends: 4632 [2021-12-15 09:49:07,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1654 GetRequests, 1650 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:49:07,697 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 74 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:07,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 65 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-15 09:49:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2021-12-15 09:49:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 3920. [2021-12-15 09:49:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3919 states have (on average 1.076805307476397) internal successors, (4220), 3919 states have internal predecessors, (4220), 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) [2021-12-15 09:49:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 4220 transitions. [2021-12-15 09:49:07,747 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 4220 transitions. Word has length 826 [2021-12-15 09:49:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:07,749 INFO L470 AbstractCegarLoop]: Abstraction has 3920 states and 4220 transitions. [2021-12-15 09:49:07,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 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) [2021-12-15 09:49:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 4220 transitions. [2021-12-15 09:49:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2021-12-15 09:49:07,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:07,759 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 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, 5, 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, 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] [2021-12-15 09:49:07,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 09:49:07,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:07,999 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1376374726, now seen corresponding path program 1 times [2021-12-15 09:49:07,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:07,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606990979] [2021-12-15 09:49:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:08,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1621 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2021-12-15 09:49:08,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:08,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606990979] [2021-12-15 09:49:08,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606990979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:08,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:49:08,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:49:08,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759088106] [2021-12-15 09:49:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:08,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:49:08,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:08,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:49:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:49:08,198 INFO L87 Difference]: Start difference. First operand 3920 states and 4220 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2021-12-15 09:49:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:08,576 INFO L93 Difference]: Finished difference Result 8194 states and 8877 transitions. [2021-12-15 09:49:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:49:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 898 [2021-12-15 09:49:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:08,589 INFO L225 Difference]: With dead ends: 8194 [2021-12-15 09:49:08,589 INFO L226 Difference]: Without dead ends: 4454 [2021-12-15 09:49:08,592 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 [2021-12-15 09:49:08,592 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 110 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:08,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 32 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 09:49:08,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2021-12-15 09:49:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4454. [2021-12-15 09:49:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 1.0779249943858074) internal successors, (4800), 4453 states have internal predecessors, (4800), 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) [2021-12-15 09:49:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4800 transitions. [2021-12-15 09:49:08,635 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4800 transitions. Word has length 898 [2021-12-15 09:49:08,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:08,635 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 4800 transitions. [2021-12-15 09:49:08,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2021-12-15 09:49:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4800 transitions. [2021-12-15 09:49:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2021-12-15 09:49:08,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:08,644 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 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, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-15 09:49:08,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 09:49:08,644 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:08,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash -285385645, now seen corresponding path program 1 times [2021-12-15 09:49:08,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:08,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058473301] [2021-12-15 09:49:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:08,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 1670 proven. 93 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2021-12-15 09:49:08,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:08,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058473301] [2021-12-15 09:49:08,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058473301] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:49:08,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161704235] [2021-12-15 09:49:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:08,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:08,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:49:08,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:49:08,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 09:49:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:09,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 09:49:09,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:49:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 1763 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2021-12-15 09:49:10,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:49:10,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161704235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:10,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:49:10,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-15 09:49:10,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397496772] [2021-12-15 09:49:10,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:10,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:49:10,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:49:10,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:49:10,324 INFO L87 Difference]: Start difference. First operand 4454 states and 4800 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2021-12-15 09:49:10,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:10,662 INFO L93 Difference]: Finished difference Result 9262 states and 9962 transitions. [2021-12-15 09:49:10,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:49:10,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 916 [2021-12-15 09:49:10,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:10,670 INFO L225 Difference]: With dead ends: 9262 [2021-12-15 09:49:10,670 INFO L226 Difference]: Without dead ends: 4988 [2021-12-15 09:49:10,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 915 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:49:10,687 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:10,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 09:49:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-12-15 09:49:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4632. [2021-12-15 09:49:10,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.0755776290218095) internal successors, (4981), 4631 states have internal predecessors, (4981), 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) [2021-12-15 09:49:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 4981 transitions. [2021-12-15 09:49:10,749 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 4981 transitions. Word has length 916 [2021-12-15 09:49:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:10,749 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 4981 transitions. [2021-12-15 09:49:10,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2021-12-15 09:49:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 4981 transitions. [2021-12-15 09:49:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2021-12-15 09:49:10,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:10,758 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-15 09:49:10,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-15 09:49:10,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-15 09:49:10,972 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash -826422406, now seen corresponding path program 1 times [2021-12-15 09:49:10,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:10,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715526476] [2021-12-15 09:49:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:10,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3089 backedges. 1141 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-12-15 09:49:11,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:11,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715526476] [2021-12-15 09:49:11,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715526476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:11,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:49:11,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:49:11,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161214897] [2021-12-15 09:49:11,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:11,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:49:11,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:11,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:49:11,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:49:11,256 INFO L87 Difference]: Start difference. First operand 4632 states and 4981 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2021-12-15 09:49:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:11,644 INFO L93 Difference]: Finished difference Result 9084 states and 9781 transitions. [2021-12-15 09:49:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:49:11,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 993 [2021-12-15 09:49:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:11,652 INFO L225 Difference]: With dead ends: 9084 [2021-12-15 09:49:11,652 INFO L226 Difference]: Without dead ends: 4632 [2021-12-15 09:49:11,655 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 [2021-12-15 09:49:11,656 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 64 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:11,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 227 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 09:49:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2021-12-15 09:49:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4632. [2021-12-15 09:49:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.0624055279637228) internal successors, (4920), 4631 states have internal predecessors, (4920), 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) [2021-12-15 09:49:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 4920 transitions. [2021-12-15 09:49:11,699 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 4920 transitions. Word has length 993 [2021-12-15 09:49:11,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:11,700 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 4920 transitions. [2021-12-15 09:49:11,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2021-12-15 09:49:11,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 4920 transitions. [2021-12-15 09:49:11,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2021-12-15 09:49:11,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:11,710 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 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, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-15 09:49:11,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 09:49:11,711 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2022978308, now seen corresponding path program 1 times [2021-12-15 09:49:11,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:11,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233273715] [2021-12-15 09:49:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:11,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3740 backedges. 1271 proven. 0 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2021-12-15 09:49:11,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:11,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233273715] [2021-12-15 09:49:11,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233273715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:11,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:49:11,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:49:11,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299562706] [2021-12-15 09:49:11,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:11,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:49:11,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:11,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:49:11,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:49:11,956 INFO L87 Difference]: Start difference. First operand 4632 states and 4920 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) [2021-12-15 09:49:12,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:12,318 INFO L93 Difference]: Finished difference Result 9084 states and 9659 transitions. [2021-12-15 09:49:12,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:49:12,319 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 1068 [2021-12-15 09:49:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:12,325 INFO L225 Difference]: With dead ends: 9084 [2021-12-15 09:49:12,325 INFO L226 Difference]: Without dead ends: 4632 [2021-12-15 09:49:12,328 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 [2021-12-15 09:49:12,328 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 66 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:12,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 240 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 09:49:12,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2021-12-15 09:49:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4632. [2021-12-15 09:49:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.0503131073202332) internal successors, (4864), 4631 states have internal predecessors, (4864), 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) [2021-12-15 09:49:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 4864 transitions. [2021-12-15 09:49:12,365 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 4864 transitions. Word has length 1068 [2021-12-15 09:49:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:12,365 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 4864 transitions. [2021-12-15 09:49:12,366 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) [2021-12-15 09:49:12,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 4864 transitions. [2021-12-15 09:49:12,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2021-12-15 09:49:12,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:12,376 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:49:12,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 09:49:12,376 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:12,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1857606004, now seen corresponding path program 1 times [2021-12-15 09:49:12,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:12,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707421947] [2021-12-15 09:49:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:12,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3977 backedges. 2906 proven. 72 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2021-12-15 09:49:12,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:12,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707421947] [2021-12-15 09:49:12,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707421947] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:49:12,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885818340] [2021-12-15 09:49:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:12,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:12,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:49:12,680 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:49:12,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 09:49:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:12,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 09:49:12,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:49:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3977 backedges. 2619 proven. 0 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-12-15 09:49:14,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:49:14,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885818340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:14,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:49:14,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-12-15 09:49:14,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370229660] [2021-12-15 09:49:14,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:14,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:49:14,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:14,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:49:14,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-15 09:49:14,394 INFO L87 Difference]: Start difference. First operand 4632 states and 4864 transitions. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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) [2021-12-15 09:49:14,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:14,993 INFO L93 Difference]: Finished difference Result 10152 states and 10684 transitions. [2021-12-15 09:49:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:49:14,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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 1116 [2021-12-15 09:49:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:15,000 INFO L225 Difference]: With dead ends: 10152 [2021-12-15 09:49:15,001 INFO L226 Difference]: Without dead ends: 5700 [2021-12-15 09:49:15,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 1115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-15 09:49:15,005 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 67 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:15,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 43 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 09:49:15,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2021-12-15 09:49:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5344. [2021-12-15 09:49:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.0484746397155156) internal successors, (5602), 5343 states have internal predecessors, (5602), 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) [2021-12-15 09:49:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5602 transitions. [2021-12-15 09:49:15,051 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5602 transitions. Word has length 1116 [2021-12-15 09:49:15,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:15,051 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 5602 transitions. [2021-12-15 09:49:15,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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) [2021-12-15 09:49:15,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5602 transitions. [2021-12-15 09:49:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1357 [2021-12-15 09:49:15,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:15,067 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:49:15,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-15 09:49:15,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-15 09:49:15,282 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash 858199994, now seen corresponding path program 1 times [2021-12-15 09:49:15,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:15,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748651818] [2021-12-15 09:49:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:15,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6091 backedges. 3918 proven. 0 refuted. 0 times theorem prover too weak. 2173 trivial. 0 not checked. [2021-12-15 09:49:15,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:15,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748651818] [2021-12-15 09:49:15,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748651818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:15,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:49:15,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 09:49:15,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519313601] [2021-12-15 09:49:15,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:15,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:49:15,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:49:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:49:15,681 INFO L87 Difference]: Start difference. First operand 5344 states and 5602 transitions. Second operand has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 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) [2021-12-15 09:49:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:16,134 INFO L93 Difference]: Finished difference Result 10686 states and 11220 transitions. [2021-12-15 09:49:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:49:16,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 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 1356 [2021-12-15 09:49:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:16,141 INFO L225 Difference]: With dead ends: 10686 [2021-12-15 09:49:16,141 INFO L226 Difference]: Without dead ends: 5522 [2021-12-15 09:49:16,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:49:16,145 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 129 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:16,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 214 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 09:49:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2021-12-15 09:49:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 5344. [2021-12-15 09:49:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.0413625304136254) internal successors, (5564), 5343 states have internal predecessors, (5564), 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) [2021-12-15 09:49:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5564 transitions. [2021-12-15 09:49:16,236 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5564 transitions. Word has length 1356 [2021-12-15 09:49:16,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:16,251 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 5564 transitions. [2021-12-15 09:49:16,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 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) [2021-12-15 09:49:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5564 transitions. [2021-12-15 09:49:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1654 [2021-12-15 09:49:16,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:16,284 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:49:16,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 09:49:16,284 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1570608280, now seen corresponding path program 1 times [2021-12-15 09:49:16,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:16,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57919071] [2021-12-15 09:49:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:16,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 4557 proven. 588 refuted. 0 times theorem prover too weak. 3615 trivial. 0 not checked. [2021-12-15 09:49:16,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:16,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57919071] [2021-12-15 09:49:16,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57919071] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:49:16,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387318110] [2021-12-15 09:49:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:16,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:16,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:49:16,839 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:49:16,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-15 09:49:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:17,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 09:49:17,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:49:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 3686 proven. 498 refuted. 0 times theorem prover too weak. 4576 trivial. 0 not checked. [2021-12-15 09:49:20,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 09:49:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 3851 proven. 333 refuted. 0 times theorem prover too weak. 4576 trivial. 0 not checked. [2021-12-15 09:49:22,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387318110] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 09:49:22,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 09:49:22,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2021-12-15 09:49:22,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169645591] [2021-12-15 09:49:22,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 09:49:22,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-15 09:49:22,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-15 09:49:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-15 09:49:22,026 INFO L87 Difference]: Start difference. First operand 5344 states and 5564 transitions. Second operand has 15 states, 15 states have (on average 110.13333333333334) internal successors, (1652), 15 states have internal predecessors, (1652), 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) [2021-12-15 09:49:24,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:24,269 INFO L93 Difference]: Finished difference Result 19658 states and 20501 transitions. [2021-12-15 09:49:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 09:49:24,269 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 110.13333333333334) internal successors, (1652), 15 states have internal predecessors, (1652), 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 1653 [2021-12-15 09:49:24,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:24,301 INFO L225 Difference]: With dead ends: 19658 [2021-12-15 09:49:24,302 INFO L226 Difference]: Without dead ends: 14477 [2021-12-15 09:49:24,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3356 GetRequests, 3329 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=252, Invalid=560, Unknown=0, NotChecked=0, Total=812 [2021-12-15 09:49:24,309 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 889 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 6409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1140 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:24,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 163 Invalid, 6409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 4914 Invalid, 0 Unknown, 1140 Unchecked, 1.9s Time] [2021-12-15 09:49:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14477 states. [2021-12-15 09:49:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14477 to 9916. [2021-12-15 09:49:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9916 states, 9915 states have (on average 1.0392334846192637) internal successors, (10304), 9915 states have internal predecessors, (10304), 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) [2021-12-15 09:49:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 10304 transitions. [2021-12-15 09:49:24,469 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 10304 transitions. Word has length 1653 [2021-12-15 09:49:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:24,470 INFO L470 AbstractCegarLoop]: Abstraction has 9916 states and 10304 transitions. [2021-12-15 09:49:24,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.13333333333334) internal successors, (1652), 15 states have internal predecessors, (1652), 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) [2021-12-15 09:49:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 10304 transitions. [2021-12-15 09:49:24,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1880 [2021-12-15 09:49:24,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:24,495 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 9, 9, 9, 9, 9, 9, 8, 7, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:49:24,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-15 09:49:24,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:24,712 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1253081022, now seen corresponding path program 1 times [2021-12-15 09:49:24,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:24,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006063220] [2021-12-15 09:49:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:24,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 3762 proven. 1045 refuted. 0 times theorem prover too weak. 5802 trivial. 0 not checked. [2021-12-15 09:49:25,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006063220] [2021-12-15 09:49:25,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006063220] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:49:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119757376] [2021-12-15 09:49:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:25,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:25,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:49:25,554 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:49:25,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-15 09:49:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:25,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 09:49:25,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:49:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 4807 proven. 0 refuted. 0 times theorem prover too weak. 5802 trivial. 0 not checked. [2021-12-15 09:49:28,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:49:28,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119757376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:28,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:49:28,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-15 09:49:28,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190757037] [2021-12-15 09:49:28,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:28,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:49:28,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:49:28,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:49:28,210 INFO L87 Difference]: Start difference. First operand 9916 states and 10304 transitions. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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) [2021-12-15 09:49:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:28,547 INFO L93 Difference]: Finished difference Result 21626 states and 22459 transitions. [2021-12-15 09:49:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:49:28,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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 1879 [2021-12-15 09:49:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:28,557 INFO L225 Difference]: With dead ends: 21626 [2021-12-15 09:49:28,557 INFO L226 Difference]: Without dead ends: 6877 [2021-12-15 09:49:28,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1882 GetRequests, 1878 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 09:49:28,569 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:28,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 244 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 09:49:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6877 states. [2021-12-15 09:49:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6877 to 6342. [2021-12-15 09:49:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6342 states, 6341 states have (on average 1.0182936445355621) internal successors, (6457), 6341 states have internal predecessors, (6457), 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) [2021-12-15 09:49:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6342 states to 6342 states and 6457 transitions. [2021-12-15 09:49:28,657 INFO L78 Accepts]: Start accepts. Automaton has 6342 states and 6457 transitions. Word has length 1879 [2021-12-15 09:49:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:28,658 INFO L470 AbstractCegarLoop]: Abstraction has 6342 states and 6457 transitions. [2021-12-15 09:49:28,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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) [2021-12-15 09:49:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 6342 states and 6457 transitions. [2021-12-15 09:49:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2129 [2021-12-15 09:49:28,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:49:28,685 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 11, 11, 11, 11, 10, 9, 8, 8, 8, 8, 8, 8, 7, 7, 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, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:49:28,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-15 09:49:28,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:49:28,904 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:49:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:49:28,905 INFO L85 PathProgramCache]: Analyzing trace with hash -745772662, now seen corresponding path program 1 times [2021-12-15 09:49:28,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:49:28,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998792089] [2021-12-15 09:49:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:49:28,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:49:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:49:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 13946 backedges. 2494 proven. 0 refuted. 0 times theorem prover too weak. 11452 trivial. 0 not checked. [2021-12-15 09:49:29,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:49:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998792089] [2021-12-15 09:49:29,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998792089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:49:29,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:49:29,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:49:29,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840080420] [2021-12-15 09:49:29,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:49:29,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:49:29,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:49:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:49:29,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:49:29,647 INFO L87 Difference]: Start difference. First operand 6342 states and 6457 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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) [2021-12-15 09:49:29,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:49:29,945 INFO L93 Difference]: Finished difference Result 12324 states and 12553 transitions. [2021-12-15 09:49:29,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:49:29,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 2128 [2021-12-15 09:49:29,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:49:29,947 INFO L225 Difference]: With dead ends: 12324 [2021-12-15 09:49:29,947 INFO L226 Difference]: Without dead ends: 0 [2021-12-15 09:49:29,951 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 [2021-12-15 09:49:29,952 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 64 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:49:29,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 212 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 09:49:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-15 09:49:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-15 09:49:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-15 09:49:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-15 09:49:29,953 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2128 [2021-12-15 09:49:29,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:49:29,953 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 09:49:29,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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) [2021-12-15 09:49:29,954 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-15 09:49:29,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-15 09:49:29,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 09:49:29,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-15 09:49:29,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-12-15 09:49:32,488 INFO L858 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-12-15 09:49:32,489 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-12-15 09:49:32,490 INFO L858 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,491 INFO L858 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,492 INFO L858 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,492 INFO L858 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-12-15 09:49:32,492 INFO L858 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-12-15 09:49:32,492 INFO L858 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-12-15 09:49:32,493 INFO L858 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,494 INFO L858 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,495 INFO L858 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-12-15 09:49:32,495 INFO L858 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-12-15 09:49:32,495 INFO L858 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-12-15 09:49:32,495 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-12-15 09:49:32,495 INFO L858 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-12-15 09:49:32,495 INFO L858 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-12-15 09:49:32,495 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-12-15 09:49:32,495 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-12-15 09:49:32,495 INFO L858 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,496 INFO L858 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,496 INFO L858 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,496 INFO L858 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-12-15 09:49:32,496 INFO L858 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-12-15 09:49:32,496 INFO L858 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-12-15 09:49:32,496 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-15 09:49:32,496 INFO L858 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-12-15 09:49:32,496 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 185) no Hoare annotation was computed. [2021-12-15 09:49:32,496 INFO L858 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-12-15 09:49:32,497 INFO L858 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-12-15 09:49:32,498 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-12-15 09:49:32,499 INFO L858 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-12-15 09:49:32,500 INFO L858 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-12-15 09:49:32,500 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-12-15 09:49:32,500 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-12-15 09:49:32,500 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-12-15 09:49:32,500 INFO L858 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-12-15 09:49:32,500 INFO L858 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-12-15 09:49:32,500 INFO L858 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,500 INFO L858 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,500 INFO L858 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,501 INFO L858 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-12-15 09:49:32,502 INFO L858 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-12-15 09:49:32,503 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,504 INFO L858 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,504 INFO L858 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-12-15 09:49:32,504 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-15 09:49:32,504 INFO L858 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-12-15 09:49:32,504 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-12-15 09:49:32,504 INFO L858 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-12-15 09:49:32,504 INFO L858 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-12-15 09:49:32,504 INFO L858 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-12-15 09:49:32,504 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,505 INFO L858 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,505 INFO L854 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse5 (<= ~a21~0 8)) (.cse6 (<= 10 ~a21~0)) (.cse4 (<= 9 ~a15~0)) (.cse3 (<= ~a21~0 6)) (.cse8 (<= ~a21~0 7)) (.cse1 (= ~a24~0 1)) (.cse0 (<= ~a15~0 8)) (.cse7 (<= ~a15~0 7)) (.cse2 (<= 8 ~a21~0))) (or (and .cse0 .cse1 (<= ~a12~0 80) .cse2) (and .cse3 .cse0 .cse1) (and .cse4 .cse1 (< 80 ~a12~0) (<= 9 ~a21~0)) (and (<= ~a12~0 73282) .cse1 .cse0 .cse2 .cse5) (and .cse4 .cse1 .cse2 .cse5) (and .cse6 .cse1 (<= ~a12~0 11)) (and .cse6 .cse0 .cse1) (and .cse3 .cse0 (<= (+ ~a12~0 43) 0) .cse7) (and .cse4 .cse1 (<= 7 ~a21~0) .cse8) (and .cse3 .cse1 (<= (div (+ (* ~a12~0 9) 858258) 10) 546203)) (and (<= ~a12~0 71) .cse1 (< 18 ~a12~0) .cse7 (not (= ~a15~0 7))) (and .cse1 (<= ~a12~0 10) .cse8) (and .cse1 .cse0 .cse7 .cse2))) [2021-12-15 09:49:32,505 INFO L858 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-12-15 09:49:32,505 INFO L858 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-12-15 09:49:32,505 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-12-15 09:49:32,505 INFO L858 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-12-15 09:49:32,505 INFO L858 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-12-15 09:49:32,505 INFO L858 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-12-15 09:49:32,506 INFO L858 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-12-15 09:49:32,506 INFO L858 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-12-15 09:49:32,506 INFO L858 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,506 INFO L858 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,506 INFO L861 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-12-15 09:49:32,506 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-12-15 09:49:32,506 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-12-15 09:49:32,506 INFO L858 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-12-15 09:49:32,506 INFO L858 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-12-15 09:49:32,506 INFO L858 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-12-15 09:49:32,507 INFO L858 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-12-15 09:49:32,507 INFO L858 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-12-15 09:49:32,507 INFO L858 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,507 INFO L858 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,507 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-15 09:49:32,507 INFO L858 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-12-15 09:49:32,507 INFO L858 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-12-15 09:49:32,507 INFO L858 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-12-15 09:49:32,507 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-12-15 09:49:32,508 INFO L858 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-12-15 09:49:32,508 INFO L858 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-12-15 09:49:32,508 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,508 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,508 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-12-15 09:49:32,508 INFO L858 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,508 INFO L858 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-12-15 09:49:32,508 INFO L854 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse5 (< 80 ~a12~0)) (.cse7 (<= ~a21~0 8)) (.cse4 (<= 10 ~a21~0)) (.cse6 (<= 9 ~a15~0)) (.cse3 (<= ~a21~0 6)) (.cse9 (<= ~a21~0 7)) (.cse1 (= ~a24~0 1)) (.cse0 (<= ~a15~0 8)) (.cse8 (<= ~a15~0 7)) (.cse2 (<= 8 ~a21~0))) (or (and .cse0 .cse1 (<= ~a12~0 80) .cse2) (and .cse3 .cse0 .cse1) (and .cse4 .cse1 .cse5) (and .cse6 .cse1 .cse5 (<= 9 ~a21~0)) (and (<= ~a12~0 73282) .cse1 .cse0 .cse2 .cse7) (and .cse6 .cse1 .cse2 .cse7) (and .cse4 .cse1 (<= ~a12~0 11)) (and .cse3 .cse0 (<= (+ ~a12~0 43) 0) .cse8) (and .cse6 .cse1 (<= 7 ~a21~0) .cse9) (and .cse3 .cse1 (<= (div (+ (* ~a12~0 9) 858258) 10) 546203)) (and (<= ~a12~0 71) .cse1 (< 18 ~a12~0) .cse8 (not (= ~a15~0 7))) (and .cse1 (<= ~a12~0 10) .cse9) (and .cse1 .cse0 .cse8 .cse2))) [2021-12-15 09:49:32,508 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-12-15 09:49:32,508 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,509 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-12-15 09:49:32,510 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-12-15 09:49:32,510 INFO L858 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-12-15 09:49:32,510 INFO L858 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-12-15 09:49:32,510 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-12-15 09:49:32,512 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:49:32,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 09:49:32,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:49:32 BoogieIcfgContainer [2021-12-15 09:49:32,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 09:49:32,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 09:49:32,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 09:49:32,527 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 09:49:32,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:48:49" (3/4) ... [2021-12-15 09:49:32,529 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-15 09:49:32,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-15 09:49:32,545 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-15 09:49:32,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-15 09:49:32,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-15 09:49:32,609 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 09:49:32,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 09:49:32,609 INFO L158 Benchmark]: Toolchain (without parser) took 44445.68ms. Allocated memory was 104.9MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 70.7MB in the beginning and 888.3MB in the end (delta: -817.7MB). Peak memory consumption was 364.7MB. Max. memory is 16.1GB. [2021-12-15 09:49:32,610 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 09:49:32,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.73ms. Allocated memory is still 104.9MB. Free memory was 70.5MB in the beginning and 59.5MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 09:49:32,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.63ms. Allocated memory is still 104.9MB. Free memory was 59.5MB in the beginning and 49.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 09:49:32,610 INFO L158 Benchmark]: Boogie Preprocessor took 84.49ms. Allocated memory is still 104.9MB. Free memory was 49.6MB in the beginning and 43.8MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 09:49:32,611 INFO L158 Benchmark]: RCFGBuilder took 927.60ms. Allocated memory was 104.9MB in the beginning and 148.9MB in the end (delta: 44.0MB). Free memory was 43.8MB in the beginning and 94.8MB in the end (delta: -51.0MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2021-12-15 09:49:32,611 INFO L158 Benchmark]: TraceAbstraction took 42825.40ms. Allocated memory was 148.9MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 94.8MB in the beginning and 907.2MB in the end (delta: -812.4MB). Peak memory consumption was 728.5MB. Max. memory is 16.1GB. [2021-12-15 09:49:32,611 INFO L158 Benchmark]: Witness Printer took 82.44ms. Allocated memory is still 1.3GB. Free memory was 907.2MB in the beginning and 888.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 09:49:32,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.73ms. Allocated memory is still 104.9MB. Free memory was 70.5MB in the beginning and 59.5MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.63ms. Allocated memory is still 104.9MB. Free memory was 59.5MB in the beginning and 49.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.49ms. Allocated memory is still 104.9MB. Free memory was 49.6MB in the beginning and 43.8MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 927.60ms. Allocated memory was 104.9MB in the beginning and 148.9MB in the end (delta: 44.0MB). Free memory was 43.8MB in the beginning and 94.8MB in the end (delta: -51.0MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * TraceAbstraction took 42825.40ms. Allocated memory was 148.9MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 94.8MB in the beginning and 907.2MB in the end (delta: -812.4MB). Peak memory consumption was 728.5MB. Max. memory is 16.1GB. * Witness Printer took 82.44ms. Allocated memory is still 1.3GB. Free memory was 907.2MB in the beginning and 888.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 185]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.8s, OverallIterations: 21, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3388 SdHoareTripleChecker+Valid, 10.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3388 mSDsluCounter, 2675 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1140 IncrementalHoareTripleChecker+Unchecked, 264 mSDsCounter, 2071 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16191 IncrementalHoareTripleChecker+Invalid, 19402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2071 mSolverCounterUnsat, 2411 mSDtfsCounter, 16191 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12129 GetRequests, 12043 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9916occurred in iteration=19, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 7944 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 150 NumberOfFragments, 341 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1288 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 3 FomulaSimplificationsInter, 11966 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 21.2s InterpolantComputationTime, 26941 NumberOfCodeBlocks, 26941 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 29386 ConstructedInterpolants, 55 QuantifiedInterpolants, 82384 SizeOfPredicates, 2 NumberOfNonLiveVariables, 11883 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 34 InterpolantComputations, 19 PerfectInterpolantSequences, 105766/109056 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((((((((((a15 <= 8 && a24 == 1) && a12 <= 80) && 8 <= a21) || ((a21 <= 6 && a15 <= 8) && a24 == 1)) || (((9 <= a15 && a24 == 1) && 80 < a12) && 9 <= a21)) || ((((a12 <= 73282 && a24 == 1) && a15 <= 8) && 8 <= a21) && a21 <= 8)) || (((9 <= a15 && a24 == 1) && 8 <= a21) && a21 <= 8)) || ((10 <= a21 && a24 == 1) && a12 <= 11)) || ((10 <= a21 && a15 <= 8) && a24 == 1)) || (((a21 <= 6 && a15 <= 8) && a12 + 43 <= 0) && a15 <= 7)) || (((9 <= a15 && a24 == 1) && 7 <= a21) && a21 <= 7)) || ((a21 <= 6 && a24 == 1) && (a12 * 9 + 858258) / 10 <= 546203)) || ((((a12 <= 71 && a24 == 1) && 18 < a12) && a15 <= 7) && !(a15 == 7))) || ((a24 == 1 && a12 <= 10) && a21 <= 7)) || (((a24 == 1 && a15 <= 8) && a15 <= 7) && 8 <= a21) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((((((((((a15 <= 8 && a24 == 1) && a12 <= 80) && 8 <= a21) || ((a21 <= 6 && a15 <= 8) && a24 == 1)) || ((10 <= a21 && a24 == 1) && 80 < a12)) || (((9 <= a15 && a24 == 1) && 80 < a12) && 9 <= a21)) || ((((a12 <= 73282 && a24 == 1) && a15 <= 8) && 8 <= a21) && a21 <= 8)) || (((9 <= a15 && a24 == 1) && 8 <= a21) && a21 <= 8)) || ((10 <= a21 && a24 == 1) && a12 <= 11)) || (((a21 <= 6 && a15 <= 8) && a12 + 43 <= 0) && a15 <= 7)) || (((9 <= a15 && a24 == 1) && 7 <= a21) && a21 <= 7)) || ((a21 <= 6 && a24 == 1) && (a12 * 9 + 858258) / 10 <= 546203)) || ((((a12 <= 71 && a24 == 1) && 18 < a12) && a15 <= 7) && !(a15 == 7))) || ((a24 == 1 && a12 <= 10) && a21 <= 7)) || (((a24 == 1 && a15 <= 8) && a15 <= 7) && 8 <= a21) RESULT: Ultimate proved your program to be correct! [2021-12-15 09:49:32,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE