./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/combinations/Problem05_label49+token_ring.10.cil-1.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 350eaf2863f602bf9d6d43c31d190808a06f274c6c222054e38d4c11a80535eb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:43:39,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:43:39,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:43:39,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:43:39,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:43:39,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:43:39,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:43:39,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:43:39,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:43:39,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:43:39,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:43:39,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:43:39,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:43:39,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:43:39,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:43:39,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:43:39,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:43:39,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:43:39,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:43:39,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:43:39,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:43:39,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:43:39,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:43:39,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:43:39,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:43:39,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:43:39,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:43:39,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:43:39,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:43:39,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:43:39,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:43:39,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:43:39,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:43:39,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:43:39,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:43:39,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:43:39,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:43:39,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:43:39,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:43:39,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:43:39,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:43:39,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:43:39,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:43:39,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:43:39,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:43:39,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:43:39,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:43:39,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:43:39,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:43:39,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:43:39,620 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:43:39,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:43:39,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:43:39,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:43:39,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:43:39,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:43:39,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:43:39,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:43:39,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:43:39,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:43:39,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:43:39,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:43:39,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:43:39,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:43:39,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:43:39,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:43:39,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:43:39,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:43:39,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:43:39,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:43:39,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:43:39,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:43:39,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:43:39,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:43:39,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:43:39,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:43:39,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 350eaf2863f602bf9d6d43c31d190808a06f274c6c222054e38d4c11a80535eb [2021-12-22 12:43:39,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:43:39,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:43:39,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:43:39,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:43:39,829 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:43:39,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-1.c [2021-12-22 12:43:39,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77246e455/2a83437e21614366b1d32d7d79aa256f/FLAG7a5b274e3 [2021-12-22 12:43:40,509 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:43:40,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-1.c [2021-12-22 12:43:40,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77246e455/2a83437e21614366b1d32d7d79aa256f/FLAG7a5b274e3 [2021-12-22 12:43:40,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77246e455/2a83437e21614366b1d32d7d79aa256f [2021-12-22 12:43:40,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:43:40,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:43:40,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:43:40,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:43:40,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:43:40,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:43:40" (1/1) ... [2021-12-22 12:43:40,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11aec54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:40, skipping insertion in model container [2021-12-22 12:43:40,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:43:40" (1/1) ... [2021-12-22 12:43:40,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:43:41,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:43:42,368 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/combinations/Problem05_label49+token_ring.10.cil-1.c[380593,380606] [2021-12-22 12:43:42,389 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/combinations/Problem05_label49+token_ring.10.cil-1.c[383339,383352] [2021-12-22 12:43:42,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:43:42,594 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:43:43,152 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/combinations/Problem05_label49+token_ring.10.cil-1.c[380593,380606] [2021-12-22 12:43:43,157 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/combinations/Problem05_label49+token_ring.10.cil-1.c[383339,383352] [2021-12-22 12:43:43,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:43:43,259 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:43:43,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43 WrapperNode [2021-12-22 12:43:43,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:43:43,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:43:43,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:43:43,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:43:43,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:43,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:43,689 INFO L137 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13088 [2021-12-22 12:43:43,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:43:43,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:43:43,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:43:43,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:43:43,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:43,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:43,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:43,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:43,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:43,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:43,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:44,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:43:44,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:43:44,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:43:44,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:43:44,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (1/1) ... [2021-12-22 12:43:44,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:43:44,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:43:44,044 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) [2021-12-22 12:43:44,161 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 [2021-12-22 12:43:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:43:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:43:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:43:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:43:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:43:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:43:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:43:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-22 12:43:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-22 12:43:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:43:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:43:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:43:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:43:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:43:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:43:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:43:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:43:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:43:44,254 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:43:44,256 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:43:49,532 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:43:49,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:43:49,547 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-22 12:43:49,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:43:49 BoogieIcfgContainer [2021-12-22 12:43:49,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:43:49,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:43:49,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:43:49,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:43:49,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:43:40" (1/3) ... [2021-12-22 12:43:49,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e7f27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:43:49, skipping insertion in model container [2021-12-22 12:43:49,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:43" (2/3) ... [2021-12-22 12:43:49,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e7f27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:43:49, skipping insertion in model container [2021-12-22 12:43:49,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:43:49" (3/3) ... [2021-12-22 12:43:49,556 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.10.cil-1.c [2021-12-22 12:43:49,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:43:49,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:43:49,593 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:43:49,598 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 [2021-12-22 12:43:49,598 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:43:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-22 12:43:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:43:49,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:49,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:49,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:49,658 INFO L85 PathProgramCache]: Analyzing trace with hash -289990772, now seen corresponding path program 1 times [2021-12-22 12:43:49,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:49,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677231116] [2021-12-22 12:43:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:49,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:49,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:43:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:43:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:43:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:43:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:50,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:50,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677231116] [2021-12-22 12:43:50,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677231116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:50,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:50,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:43:50,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914839155] [2021-12-22 12:43:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:50,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:43:50,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:43:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:43:50,129 INFO L87 Difference]: Start difference. First operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:51,311 INFO L93 Difference]: Finished difference Result 5155 states and 9474 transitions. [2021-12-22 12:43:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:43:51,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:43:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:51,330 INFO L225 Difference]: With dead ends: 5155 [2021-12-22 12:43:51,331 INFO L226 Difference]: Without dead ends: 2575 [2021-12-22 12:43:51,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:43:51,340 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 896 mSDsluCounter, 12449 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 17050 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:51,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 17050 Invalid, 660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:43:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2021-12-22 12:43:51,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2455. [2021-12-22 12:43:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8306484923585296) internal successors, (4432), 2424 states have internal predecessors, (4432), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-22 12:43:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4482 transitions. [2021-12-22 12:43:51,438 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4482 transitions. Word has length 157 [2021-12-22 12:43:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:51,439 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4482 transitions. [2021-12-22 12:43:51,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4482 transitions. [2021-12-22 12:43:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:43:51,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:51,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:51,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:43:51,443 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:51,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:51,444 INFO L85 PathProgramCache]: Analyzing trace with hash -628278322, now seen corresponding path program 1 times [2021-12-22 12:43:51,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:51,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992026754] [2021-12-22 12:43:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:51,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:51,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:43:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:43:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:43:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:43:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:51,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:51,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992026754] [2021-12-22 12:43:51,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992026754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:51,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:51,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:51,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832737678] [2021-12-22 12:43:51,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:51,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:51,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:51,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:51,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:51,613 INFO L87 Difference]: Start difference. First operand 2455 states and 4482 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:54,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:54,286 INFO L93 Difference]: Finished difference Result 3362 states and 5958 transitions. [2021-12-22 12:43:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:54,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:43:54,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:54,299 INFO L225 Difference]: With dead ends: 3362 [2021-12-22 12:43:54,299 INFO L226 Difference]: Without dead ends: 3046 [2021-12-22 12:43:54,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:54,305 INFO L933 BasicCegarLoop]: 4852 mSDtfsCounter, 5234 mSDsluCounter, 17609 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5251 SdHoareTripleChecker+Valid, 22461 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:54,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5251 Valid, 22461 Invalid, 2822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 12:43:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-12-22 12:43:54,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2787. [2021-12-22 12:43:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2724 states have (on average 1.8050660792951543) internal successors, (4917), 2729 states have internal predecessors, (4917), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2021-12-22 12:43:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 5016 transitions. [2021-12-22 12:43:54,381 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 5016 transitions. Word has length 157 [2021-12-22 12:43:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:54,383 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 5016 transitions. [2021-12-22 12:43:54,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 5016 transitions. [2021-12-22 12:43:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:43:54,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:54,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:54,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:43:54,386 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash 770675280, now seen corresponding path program 1 times [2021-12-22 12:43:54,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:54,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346863768] [2021-12-22 12:43:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:54,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:43:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:43:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:43:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:43:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:54,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:54,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346863768] [2021-12-22 12:43:54,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346863768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:54,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:54,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:54,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338105193] [2021-12-22 12:43:54,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:54,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:54,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:54,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:54,524 INFO L87 Difference]: Start difference. First operand 2787 states and 5016 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:56,916 INFO L93 Difference]: Finished difference Result 4512 states and 7800 transitions. [2021-12-22 12:43:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:43:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:56,931 INFO L225 Difference]: With dead ends: 4512 [2021-12-22 12:43:56,931 INFO L226 Difference]: Without dead ends: 3866 [2021-12-22 12:43:56,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:56,935 INFO L933 BasicCegarLoop]: 4779 mSDtfsCounter, 5274 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 22297 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:56,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5291 Valid, 22297 Invalid, 2697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-22 12:43:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-12-22 12:43:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3399. [2021-12-22 12:43:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3284 states have (on average 1.7649208282582216) internal successors, (5796), 3291 states have internal predecessors, (5796), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2021-12-22 12:43:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 5981 transitions. [2021-12-22 12:43:57,027 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 5981 transitions. Word has length 157 [2021-12-22 12:43:57,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:57,027 INFO L470 AbstractCegarLoop]: Abstraction has 3399 states and 5981 transitions. [2021-12-22 12:43:57,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 5981 transitions. [2021-12-22 12:43:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:43:57,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:57,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:57,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:43:57,031 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:57,031 INFO L85 PathProgramCache]: Analyzing trace with hash -846765170, now seen corresponding path program 1 times [2021-12-22 12:43:57,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:57,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199373932] [2021-12-22 12:43:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:57,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:43:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:43:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:43:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:57,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:43:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:57,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:57,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199373932] [2021-12-22 12:43:57,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199373932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:57,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:57,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:57,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170115760] [2021-12-22 12:43:57,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:57,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:57,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:57,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:57,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:57,140 INFO L87 Difference]: Start difference. First operand 3399 states and 5981 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:59,705 INFO L93 Difference]: Finished difference Result 6762 states and 11393 transitions. [2021-12-22 12:43:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:59,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:43:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:59,728 INFO L225 Difference]: With dead ends: 6762 [2021-12-22 12:43:59,728 INFO L226 Difference]: Without dead ends: 5504 [2021-12-22 12:43:59,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:59,736 INFO L933 BasicCegarLoop]: 4843 mSDtfsCounter, 5233 mSDsluCounter, 17601 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22444 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:59,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22444 Invalid, 2829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 12:43:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2021-12-22 12:43:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 4625. [2021-12-22 12:43:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4406 states have (on average 1.7149341806627327) internal successors, (7556), 4417 states have internal predecessors, (7556), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-22 12:43:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 7919 transitions. [2021-12-22 12:43:59,940 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 7919 transitions. Word has length 157 [2021-12-22 12:43:59,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:59,946 INFO L470 AbstractCegarLoop]: Abstraction has 4625 states and 7919 transitions. [2021-12-22 12:43:59,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 7919 transitions. [2021-12-22 12:43:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:43:59,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:59,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:59,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:43:59,950 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:59,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:59,950 INFO L85 PathProgramCache]: Analyzing trace with hash -483298672, now seen corresponding path program 1 times [2021-12-22 12:43:59,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:59,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434080628] [2021-12-22 12:43:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:59,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:44:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:44:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:00,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:44:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:44:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:00,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:00,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434080628] [2021-12-22 12:44:00,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434080628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:00,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:00,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:00,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887317422] [2021-12-22 12:44:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:00,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:00,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:00,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:00,078 INFO L87 Difference]: Start difference. First operand 4625 states and 7919 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:02,611 INFO L93 Difference]: Finished difference Result 11260 states and 18593 transitions. [2021-12-22 12:44:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:02,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:44:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:02,642 INFO L225 Difference]: With dead ends: 11260 [2021-12-22 12:44:02,643 INFO L226 Difference]: Without dead ends: 8776 [2021-12-22 12:44:02,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:02,654 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 5233 mSDsluCounter, 17601 mSDsCounter, 0 mSdLazyCounter, 2739 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22441 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:02,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22441 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2739 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-22 12:44:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2021-12-22 12:44:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 7083. [2021-12-22 12:44:02,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 6656 states have (on average 1.6652644230769231) internal successors, (11084), 6675 states have internal predecessors, (11084), 313 states have call successors, (313), 97 states have call predecessors, (313), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2021-12-22 12:44:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 11821 transitions. [2021-12-22 12:44:02,930 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 11821 transitions. Word has length 157 [2021-12-22 12:44:02,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:02,931 INFO L470 AbstractCegarLoop]: Abstraction has 7083 states and 11821 transitions. [2021-12-22 12:44:02,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:02,932 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 11821 transitions. [2021-12-22 12:44:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:44:02,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:02,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:02,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:44:02,936 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:02,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:02,938 INFO L85 PathProgramCache]: Analyzing trace with hash -194479282, now seen corresponding path program 1 times [2021-12-22 12:44:02,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:02,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379033532] [2021-12-22 12:44:02,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:02,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:44:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:03,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:44:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:44:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:44:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:03,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:03,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379033532] [2021-12-22 12:44:03,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379033532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:03,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:03,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:03,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350166693] [2021-12-22 12:44:03,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:03,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:03,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:03,078 INFO L87 Difference]: Start difference. First operand 7083 states and 11821 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:06,295 INFO L93 Difference]: Finished difference Result 20254 states and 33049 transitions. [2021-12-22 12:44:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:06,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:44:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:06,337 INFO L225 Difference]: With dead ends: 20254 [2021-12-22 12:44:06,337 INFO L226 Difference]: Without dead ends: 15312 [2021-12-22 12:44:06,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:06,355 INFO L933 BasicCegarLoop]: 4837 mSDtfsCounter, 5233 mSDsluCounter, 17601 mSDsCounter, 0 mSdLazyCounter, 2733 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22438 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:06,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22438 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2733 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 12:44:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2021-12-22 12:44:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 12013. [2021-12-22 12:44:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12013 states, 11170 states have (on average 1.6257833482542525) internal successors, (18160), 11205 states have internal predecessors, (18160), 617 states have call successors, (617), 193 states have call predecessors, (617), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2021-12-22 12:44:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12013 states to 12013 states and 19699 transitions. [2021-12-22 12:44:06,818 INFO L78 Accepts]: Start accepts. Automaton has 12013 states and 19699 transitions. Word has length 157 [2021-12-22 12:44:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:06,819 INFO L470 AbstractCegarLoop]: Abstraction has 12013 states and 19699 transitions. [2021-12-22 12:44:06,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 12013 states and 19699 transitions. [2021-12-22 12:44:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:44:06,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:06,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:06,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:44:06,826 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:06,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash -739351856, now seen corresponding path program 1 times [2021-12-22 12:44:06,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:06,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711968462] [2021-12-22 12:44:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:06,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:44:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:44:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:44:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:44:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:06,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:06,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711968462] [2021-12-22 12:44:06,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711968462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:06,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:06,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:06,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382978821] [2021-12-22 12:44:06,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:06,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:06,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:06,969 INFO L87 Difference]: Start difference. First operand 12013 states and 19699 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:10,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:10,190 INFO L93 Difference]: Finished difference Result 38240 states and 62149 transitions. [2021-12-22 12:44:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:10,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:44:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:10,278 INFO L225 Difference]: With dead ends: 38240 [2021-12-22 12:44:10,278 INFO L226 Difference]: Without dead ends: 28368 [2021-12-22 12:44:10,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:10,395 INFO L933 BasicCegarLoop]: 4834 mSDtfsCounter, 5233 mSDsluCounter, 17601 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22435 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:10,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22435 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2727 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 12:44:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28368 states. [2021-12-22 12:44:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28368 to 21903. [2021-12-22 12:44:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5995649594621317) internal successors, (32356), 20295 states have internal predecessors, (32356), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-22 12:44:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35661 transitions. [2021-12-22 12:44:11,287 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35661 transitions. Word has length 157 [2021-12-22 12:44:11,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:11,287 INFO L470 AbstractCegarLoop]: Abstraction has 21903 states and 35661 transitions. [2021-12-22 12:44:11,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:11,288 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35661 transitions. [2021-12-22 12:44:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:44:11,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:11,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:11,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:44:11,300 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash -64191730, now seen corresponding path program 1 times [2021-12-22 12:44:11,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:11,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682627770] [2021-12-22 12:44:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:11,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:11,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:44:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:44:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:44:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:11,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:44:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:11,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:11,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682627770] [2021-12-22 12:44:11,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682627770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:11,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:11,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:11,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500986263] [2021-12-22 12:44:11,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:11,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:11,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:11,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:11,419 INFO L87 Difference]: Start difference. First operand 21903 states and 35661 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:13,722 INFO L93 Difference]: Finished difference Result 48585 states and 79664 transitions. [2021-12-22 12:44:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:44:13,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:44:13,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:13,812 INFO L225 Difference]: With dead ends: 48585 [2021-12-22 12:44:13,812 INFO L226 Difference]: Without dead ends: 28821 [2021-12-22 12:44:13,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:44:13,855 INFO L933 BasicCegarLoop]: 4508 mSDtfsCounter, 5073 mSDsluCounter, 12537 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5091 SdHoareTripleChecker+Valid, 17045 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:13,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5091 Valid, 17045 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:44:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2021-12-22 12:44:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 21903. [2021-12-22 12:44:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5963515918528772) internal successors, (32291), 20295 states have internal predecessors, (32291), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-22 12:44:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35596 transitions. [2021-12-22 12:44:14,902 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35596 transitions. Word has length 157 [2021-12-22 12:44:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:14,902 INFO L470 AbstractCegarLoop]: Abstraction has 21903 states and 35596 transitions. [2021-12-22 12:44:14,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35596 transitions. [2021-12-22 12:44:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:44:14,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:14,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:14,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:44:14,913 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1012243696, now seen corresponding path program 1 times [2021-12-22 12:44:14,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:14,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266375914] [2021-12-22 12:44:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:14,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:44:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:44:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:44:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:15,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:44:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:15,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:15,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266375914] [2021-12-22 12:44:15,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266375914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:15,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:15,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:15,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922515190] [2021-12-22 12:44:15,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:15,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:15,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:15,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:15,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:15,009 INFO L87 Difference]: Start difference. First operand 21903 states and 35596 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:20,016 INFO L93 Difference]: Finished difference Result 74083 states and 120373 transitions. [2021-12-22 12:44:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:20,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:44:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:20,171 INFO L225 Difference]: With dead ends: 74083 [2021-12-22 12:44:20,171 INFO L226 Difference]: Without dead ends: 54321 [2021-12-22 12:44:20,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:20,223 INFO L933 BasicCegarLoop]: 4818 mSDtfsCounter, 5261 mSDsluCounter, 17601 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22419 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:20,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5278 Valid, 22419 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 12:44:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54321 states. [2021-12-22 12:44:22,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54321 to 41872. [2021-12-22 12:44:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41872 states, 38533 states have (on average 1.5805154023823735) internal successors, (60902), 38664 states have internal predecessors, (60902), 2441 states have call successors, (2441), 769 states have call predecessors, (2441), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-22 12:44:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41872 states to 41872 states and 68225 transitions. [2021-12-22 12:44:23,036 INFO L78 Accepts]: Start accepts. Automaton has 41872 states and 68225 transitions. Word has length 157 [2021-12-22 12:44:23,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:23,037 INFO L470 AbstractCegarLoop]: Abstraction has 41872 states and 68225 transitions. [2021-12-22 12:44:23,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:23,037 INFO L276 IsEmpty]: Start isEmpty. Operand 41872 states and 68225 transitions. [2021-12-22 12:44:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:44:23,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:23,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:23,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:44:23,056 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:23,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:23,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1446749294, now seen corresponding path program 1 times [2021-12-22 12:44:23,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:23,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307973731] [2021-12-22 12:44:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:23,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:23,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:23,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:44:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:23,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:44:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:44:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:44:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:23,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:23,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307973731] [2021-12-22 12:44:23,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307973731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:23,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:23,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:23,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753597437] [2021-12-22 12:44:23,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:23,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:23,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:23,170 INFO L87 Difference]: Start difference. First operand 41872 states and 68225 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:31,804 INFO L93 Difference]: Finished difference Result 146022 states and 239430 transitions. [2021-12-22 12:44:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:44:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-22 12:44:31,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:32,210 INFO L225 Difference]: With dead ends: 146022 [2021-12-22 12:44:32,211 INFO L226 Difference]: Without dead ends: 106291 [2021-12-22 12:44:32,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:44:32,324 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 5287 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 22280 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:32,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5304 Valid, 22280 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 12:44:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106291 states. [2021-12-22 12:44:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106291 to 81938. [2021-12-22 12:44:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81938 states, 75271 states have (on average 1.57186698728594) internal successors, (118316), 75530 states have internal predecessors, (118316), 4873 states have call successors, (4873), 1537 states have call predecessors, (4873), 1792 states have return successors, (11944), 5126 states have call predecessors, (11944), 4871 states have call successors, (11944) [2021-12-22 12:44:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81938 states to 81938 states and 135133 transitions. [2021-12-22 12:44:37,564 INFO L78 Accepts]: Start accepts. Automaton has 81938 states and 135133 transitions. Word has length 157 [2021-12-22 12:44:37,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:37,565 INFO L470 AbstractCegarLoop]: Abstraction has 81938 states and 135133 transitions. [2021-12-22 12:44:37,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 81938 states and 135133 transitions. [2021-12-22 12:44:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 12:44:37,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:37,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:37,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:44:37,610 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1876407600, now seen corresponding path program 1 times [2021-12-22 12:44:37,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:37,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155578828] [2021-12-22 12:44:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:37,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 12:44:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 12:44:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 12:44:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 12:44:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:37,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:37,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155578828] [2021-12-22 12:44:37,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155578828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:37,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:37,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:37,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083510342] [2021-12-22 12:44:37,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:37,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:37,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:37,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:37,748 INFO L87 Difference]: Start difference. First operand 81938 states and 135133 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)