./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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.03.cil-2.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 713a95fba13367522eddac239136ad149ef56d491623153a32513b25fa3198dd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:02:11,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:02:11,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:02:11,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:02:11,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:02:11,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:02:11,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:02:11,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:02:11,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:02:11,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:02:11,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:02:11,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:02:11,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:02:11,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:02:11,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:02:11,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:02:11,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:02:11,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:02:11,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:02:11,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:02:11,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:02:11,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:02:11,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:02:11,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:02:11,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:02:11,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:02:11,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:02:11,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:02:11,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:02:11,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:02:11,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:02:11,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:02:11,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:02:11,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:02:11,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:02:11,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:02:11,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:02:11,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:02:11,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:02:11,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:02:11,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:02:11,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:02:11,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:02:11,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:02:11,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:02:11,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:02:11,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:02:11,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:02:11,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:02:11,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:02:11,553 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:02:11,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:02:11,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:02:11,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:02:11,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:02:11,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:02:11,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:02:11,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:02:11,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:02:11,556 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:02:11,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:02:11,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:02:11,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:02:11,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:02:11,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:02:11,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:02:11,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:02:11,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:02:11,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:02:11,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:02:11,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:02:11,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:02:11,558 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:02:11,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:02:11,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:02:11,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 713a95fba13367522eddac239136ad149ef56d491623153a32513b25fa3198dd [2021-12-28 02:02:11,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:02:11,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:02:11,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:02:11,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:02:11,909 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:02:11,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c [2021-12-28 02:02:11,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b301dde83/1f70408d415f4103bf8e4ecb38badb86/FLAG9268918b3 [2021-12-28 02:02:12,834 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:02:12,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c [2021-12-28 02:02:12,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b301dde83/1f70408d415f4103bf8e4ecb38badb86/FLAG9268918b3 [2021-12-28 02:02:12,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b301dde83/1f70408d415f4103bf8e4ecb38badb86 [2021-12-28 02:02:12,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:02:12,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:02:12,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:02:12,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:02:12,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:02:12,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:02:12" (1/1) ... [2021-12-28 02:02:12,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bebb03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:12, skipping insertion in model container [2021-12-28 02:02:12,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:02:12" (1/1) ... [2021-12-28 02:02:13,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:02:13,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:02:14,926 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.03.cil-2.c[380593,380606] [2021-12-28 02:02:14,951 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.03.cil-2.c[383339,383352] [2021-12-28 02:02:15,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:02:15,105 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:02:15,873 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.03.cil-2.c[380593,380606] [2021-12-28 02:02:15,879 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.03.cil-2.c[383339,383352] [2021-12-28 02:02:15,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:02:15,996 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:02:16,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16 WrapperNode [2021-12-28 02:02:16,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:02:16,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:02:16,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:02:16,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:02:16,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:16,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:16,572 INFO L137 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2021-12-28 02:02:16,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:02:16,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:02:16,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:02:16,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:02:16,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:16,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:16,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:16,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:17,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:17,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:17,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:17,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:02:17,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:02:17,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:02:17,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:02:17,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (1/1) ... [2021-12-28 02:02:17,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:02:17,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:02:17,252 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) [2021-12-28 02:02:17,280 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 [2021-12-28 02:02:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:02:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 02:02:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 02:02:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 02:02:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 02:02:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 02:02:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 02:02:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 02:02:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 02:02:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 02:02:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 02:02:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 02:02:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 02:02:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:02:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:02:17,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:02:17,428 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:02:17,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:02:23,284 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:02:23,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:02:23,309 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-28 02:02:23,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:02:23 BoogieIcfgContainer [2021-12-28 02:02:23,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:02:23,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:02:23,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:02:23,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:02:23,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:02:12" (1/3) ... [2021-12-28 02:02:23,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fcbaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:02:23, skipping insertion in model container [2021-12-28 02:02:23,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:02:16" (2/3) ... [2021-12-28 02:02:23,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fcbaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:02:23, skipping insertion in model container [2021-12-28 02:02:23,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:02:23" (3/3) ... [2021-12-28 02:02:23,322 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.03.cil-2.c [2021-12-28 02:02:23,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:02:23,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:02:23,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:02:23,389 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 [2021-12-28 02:02:23,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:02:23,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-28 02:02:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 02:02:23,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:23,445 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] [2021-12-28 02:02:23,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:23,450 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2021-12-28 02:02:23,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:23,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262025892] [2021-12-28 02:02:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:23,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:23,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:23,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:02:23,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:23,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262025892] [2021-12-28 02:02:23,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262025892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:23,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:02:23,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:02:23,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515588052] [2021-12-28 02:02:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:23,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:02:23,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:02:23,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:02:23,911 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:25,033 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2021-12-28 02:02:25,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:02:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-28 02:02:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:25,058 INFO L225 Difference]: With dead ends: 4899 [2021-12-28 02:02:25,058 INFO L226 Difference]: Without dead ends: 2500 [2021-12-28 02:02:25,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 02:02:25,072 INFO L933 BasicCegarLoop]: 4287 mSDtfsCounter, 4543 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:25,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4553 Valid, 16755 Invalid, 782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 02:02:25,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2021-12-28 02:02:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2021-12-28 02:02:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2021-12-28 02:02:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2021-12-28 02:02:25,191 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2021-12-28 02:02:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:25,192 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2021-12-28 02:02:25,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2021-12-28 02:02:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 02:02:25,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:25,196 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] [2021-12-28 02:02:25,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:02:25,196 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:25,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2021-12-28 02:02:25,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:25,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417983636] [2021-12-28 02:02:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:25,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:25,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:25,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:25,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:25,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:02:25,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:25,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417983636] [2021-12-28 02:02:25,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417983636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:25,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:02:25,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:02:25,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136259511] [2021-12-28 02:02:25,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:25,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:02:25,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:02:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:02:25,325 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:26,427 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2021-12-28 02:02:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:02:26,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-28 02:02:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:26,442 INFO L225 Difference]: With dead ends: 2969 [2021-12-28 02:02:26,442 INFO L226 Difference]: Without dead ends: 2686 [2021-12-28 02:02:26,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:02:26,450 INFO L933 BasicCegarLoop]: 4320 mSDtfsCounter, 4469 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 20875 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:26,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4479 Valid, 20875 Invalid, 1147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 02:02:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-12-28 02:02:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2021-12-28 02:02:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2021-12-28 02:02:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2021-12-28 02:02:26,531 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2021-12-28 02:02:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:26,532 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2021-12-28 02:02:26,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2021-12-28 02:02:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 02:02:26,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:26,540 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] [2021-12-28 02:02:26,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:02:26,540 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:26,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:26,541 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2021-12-28 02:02:26,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:26,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676343032] [2021-12-28 02:02:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:26,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:26,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:26,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:26,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:26,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:26,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:02:26,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:26,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676343032] [2021-12-28 02:02:26,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676343032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:26,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:02:26,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:02:26,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528316634] [2021-12-28 02:02:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:26,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:02:26,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:26,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:02:26,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:02:26,678 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:27,752 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2021-12-28 02:02:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:02:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-28 02:02:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:27,765 INFO L225 Difference]: With dead ends: 3451 [2021-12-28 02:02:27,766 INFO L226 Difference]: Without dead ends: 3035 [2021-12-28 02:02:27,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:02:27,769 INFO L933 BasicCegarLoop]: 4312 mSDtfsCounter, 4466 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 20867 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:27,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4476 Valid, 20867 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 02:02:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2021-12-28 02:02:27,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2021-12-28 02:02:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2021-12-28 02:02:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2021-12-28 02:02:27,910 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2021-12-28 02:02:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:27,911 INFO L470 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2021-12-28 02:02:27,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2021-12-28 02:02:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 02:02:27,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:27,913 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] [2021-12-28 02:02:27,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:02:27,914 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:27,915 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2021-12-28 02:02:27,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:27,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105828983] [2021-12-28 02:02:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:27,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:27,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:27,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:27,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:27,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:27,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:02:27,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:27,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105828983] [2021-12-28 02:02:28,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105828983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:28,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:02:28,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:02:28,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640879086] [2021-12-28 02:02:28,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:02:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:02:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:02:28,002 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:29,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:29,099 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2021-12-28 02:02:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:02:29,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-28 02:02:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:29,117 INFO L225 Difference]: With dead ends: 4382 [2021-12-28 02:02:29,117 INFO L226 Difference]: Without dead ends: 3699 [2021-12-28 02:02:29,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:02:29,122 INFO L933 BasicCegarLoop]: 4308 mSDtfsCounter, 4462 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 20863 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:29,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4472 Valid, 20863 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 02:02:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2021-12-28 02:02:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2021-12-28 02:02:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2021-12-28 02:02:29,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2021-12-28 02:02:29,246 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2021-12-28 02:02:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:29,247 INFO L470 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2021-12-28 02:02:29,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2021-12-28 02:02:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 02:02:29,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:29,250 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] [2021-12-28 02:02:29,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:02:29,250 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:29,251 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2021-12-28 02:02:29,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:29,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184778286] [2021-12-28 02:02:29,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:29,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:29,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:29,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:29,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:02:29,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:29,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184778286] [2021-12-28 02:02:29,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184778286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:29,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:02:29,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:02:29,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228814080] [2021-12-28 02:02:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:29,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:02:29,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:02:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:02:29,360 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:30,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:30,448 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2021-12-28 02:02:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 02:02:30,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-28 02:02:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:30,475 INFO L225 Difference]: With dead ends: 6651 [2021-12-28 02:02:30,475 INFO L226 Difference]: Without dead ends: 5433 [2021-12-28 02:02:30,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 02:02:30,486 INFO L933 BasicCegarLoop]: 4302 mSDtfsCounter, 4593 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 20849 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:30,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4607 Valid, 20849 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 02:02:30,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2021-12-28 02:02:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2021-12-28 02:02:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2021-12-28 02:02:30,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2021-12-28 02:02:30,671 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2021-12-28 02:02:30,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:30,672 INFO L470 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2021-12-28 02:02:30,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:30,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2021-12-28 02:02:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 02:02:30,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:30,681 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] [2021-12-28 02:02:30,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:02:30,681 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2021-12-28 02:02:30,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:30,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982722430] [2021-12-28 02:02:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:30,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:30,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:02:30,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:30,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982722430] [2021-12-28 02:02:30,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982722430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:30,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:02:30,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:02:30,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838085135] [2021-12-28 02:02:30,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:30,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:02:30,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:30,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:02:30,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:02:30,791 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:32,208 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2021-12-28 02:02:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 02:02:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-28 02:02:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:32,251 INFO L225 Difference]: With dead ends: 10516 [2021-12-28 02:02:32,251 INFO L226 Difference]: Without dead ends: 8247 [2021-12-28 02:02:32,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 02:02:32,264 INFO L933 BasicCegarLoop]: 4339 mSDtfsCounter, 4479 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4488 SdHoareTripleChecker+Valid, 20883 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:32,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4488 Valid, 20883 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 02:02:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2021-12-28 02:02:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2021-12-28 02:02:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2021-12-28 02:02:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2021-12-28 02:02:32,554 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2021-12-28 02:02:32,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:32,554 INFO L470 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2021-12-28 02:02:32,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2021-12-28 02:02:32,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 02:02:32,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:32,559 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] [2021-12-28 02:02:32,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:02:32,560 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:32,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2021-12-28 02:02:32,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:32,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405617379] [2021-12-28 02:02:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:32,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:32,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:32,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:32,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:02:32,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:32,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405617379] [2021-12-28 02:02:32,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405617379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:32,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:02:32,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:02:32,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470242309] [2021-12-28 02:02:32,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:32,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:02:32,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:02:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:02:32,644 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:34,083 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2021-12-28 02:02:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 02:02:34,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-28 02:02:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:34,143 INFO L225 Difference]: With dead ends: 17230 [2021-12-28 02:02:34,143 INFO L226 Difference]: Without dead ends: 12950 [2021-12-28 02:02:34,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 02:02:34,165 INFO L933 BasicCegarLoop]: 4289 mSDtfsCounter, 4470 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:34,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4484 Valid, 20836 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 02:02:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2021-12-28 02:02:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2021-12-28 02:02:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2021-12-28 02:02:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2021-12-28 02:02:34,752 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2021-12-28 02:02:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:34,754 INFO L470 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2021-12-28 02:02:34,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2021-12-28 02:02:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 02:02:34,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:34,764 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] [2021-12-28 02:02:34,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:02:34,765 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2021-12-28 02:02:34,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:34,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193577645] [2021-12-28 02:02:34,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:34,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:34,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:34,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:02:34,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:34,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193577645] [2021-12-28 02:02:34,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193577645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:34,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:02:34,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:02:34,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019351663] [2021-12-28 02:02:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:34,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:02:34,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:02:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:02:34,853 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:35,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:35,994 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2021-12-28 02:02:35,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:02:35,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-28 02:02:35,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:36,079 INFO L225 Difference]: With dead ends: 25979 [2021-12-28 02:02:36,079 INFO L226 Difference]: Without dead ends: 17584 [2021-12-28 02:02:36,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-28 02:02:36,121 INFO L933 BasicCegarLoop]: 4388 mSDtfsCounter, 4630 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 16716 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:36,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4657 Valid, 16716 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 02:02:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2021-12-28 02:02:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2021-12-28 02:02:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2021-12-28 02:02:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2021-12-28 02:02:36,758 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2021-12-28 02:02:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:36,758 INFO L470 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2021-12-28 02:02:36,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 02:02:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2021-12-28 02:02:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-28 02:02:36,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:36,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:02:36,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:02:36,795 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:36,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2021-12-28 02:02:36,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:36,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389083412] [2021-12-28 02:02:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:36,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:36,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:36,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:36,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 02:02:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 02:02:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:36,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 02:02:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 02:02:36,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:36,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389083412] [2021-12-28 02:02:36,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389083412] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:02:36,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254141977] [2021-12-28 02:02:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:36,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:02:36,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:02:36,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:02:36,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 02:02:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:37,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 02:02:37,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:02:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 02:02:37,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:02:37,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254141977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:37,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 02:02:37,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-28 02:02:37,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907307970] [2021-12-28 02:02:37,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:37,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:02:37,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:02:37,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:02:37,378 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 02:02:38,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:38,504 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2021-12-28 02:02:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:02:38,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2021-12-28 02:02:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:38,617 INFO L225 Difference]: With dead ends: 39550 [2021-12-28 02:02:38,618 INFO L226 Difference]: Without dead ends: 26962 [2021-12-28 02:02:38,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:02:38,676 INFO L933 BasicCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:38,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:02:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2021-12-28 02:02:39,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2021-12-28 02:02:39,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2021-12-28 02:02:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2021-12-28 02:02:39,749 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2021-12-28 02:02:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:39,749 INFO L470 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2021-12-28 02:02:39,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 02:02:39,749 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2021-12-28 02:02:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-28 02:02:39,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:39,807 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:02:39,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 02:02:40,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:02:40,032 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:40,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2021-12-28 02:02:40,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:40,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401920659] [2021-12-28 02:02:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:40,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 02:02:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 02:02:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 02:02:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 02:02:40,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:40,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401920659] [2021-12-28 02:02:40,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401920659] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:02:40,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378585574] [2021-12-28 02:02:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:40,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:02:40,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:02:40,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:02:40,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 02:02:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:40,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 02:02:40,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:02:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 02:02:40,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:02:40,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378585574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:40,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 02:02:40,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-28 02:02:40,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316155153] [2021-12-28 02:02:40,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:40,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:02:40,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:02:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:02:40,517 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 02:02:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:42,196 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2021-12-28 02:02:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:02:42,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2021-12-28 02:02:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:42,412 INFO L225 Difference]: With dead ends: 75333 [2021-12-28 02:02:42,412 INFO L226 Difference]: Without dead ends: 50702 [2021-12-28 02:02:42,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:02:42,483 INFO L933 BasicCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:42,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:02:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2021-12-28 02:02:44,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2021-12-28 02:02:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2021-12-28 02:02:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2021-12-28 02:02:44,607 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2021-12-28 02:02:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:44,608 INFO L470 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2021-12-28 02:02:44,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 02:02:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2021-12-28 02:02:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-28 02:02:44,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:44,697 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:02:44,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 02:02:44,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 02:02:44,924 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:44,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2021-12-28 02:02:44,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:44,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934641922] [2021-12-28 02:02:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:44,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:44,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:45,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:45,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 02:02:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 02:02:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:45,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 02:02:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 02:02:45,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:45,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934641922] [2021-12-28 02:02:45,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934641922] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:02:45,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770553194] [2021-12-28 02:02:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:45,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:02:45,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:02:45,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:02:45,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 02:02:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:45,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 02:02:45,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:02:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 02:02:45,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:02:45,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770553194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:45,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 02:02:45,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-28 02:02:45,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815763463] [2021-12-28 02:02:45,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:45,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:02:45,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:45,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:02:45,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:02:45,348 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 02:02:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:02:48,273 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2021-12-28 02:02:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:02:48,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2021-12-28 02:02:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:02:48,733 INFO L225 Difference]: With dead ends: 144685 [2021-12-28 02:02:48,733 INFO L226 Difference]: Without dead ends: 96511 [2021-12-28 02:02:49,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:02:49,090 INFO L933 BasicCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:02:49,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:02:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2021-12-28 02:02:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2021-12-28 02:02:53,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2021-12-28 02:02:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96511 states to 96511 states and 147320 transitions. [2021-12-28 02:02:53,527 INFO L78 Accepts]: Start accepts. Automaton has 96511 states and 147320 transitions. Word has length 128 [2021-12-28 02:02:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:02:53,528 INFO L470 AbstractCegarLoop]: Abstraction has 96511 states and 147320 transitions. [2021-12-28 02:02:53,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 02:02:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 96511 states and 147320 transitions. [2021-12-28 02:02:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-28 02:02:53,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:02:53,764 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:02:53,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 02:02:53,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:02:53,977 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:02:53,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:02:53,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1108291405, now seen corresponding path program 1 times [2021-12-28 02:02:53,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:02:53,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009038947] [2021-12-28 02:02:53,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:53,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:02:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:02:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 02:02:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:02:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:02:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 02:02:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 02:02:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 02:02:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 02:02:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 02:02:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 02:02:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-28 02:02:54,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:02:54,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009038947] [2021-12-28 02:02:54,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009038947] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:02:54,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048360831] [2021-12-28 02:02:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:02:54,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:02:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:02:54,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:02:54,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 02:02:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:02:54,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 02:02:54,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:02:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 02:02:54,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:02:54,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048360831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:02:54,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 02:02:54,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-28 02:02:54,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762790990] [2021-12-28 02:02:54,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:02:54,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:02:54,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:02:54,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:02:54,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:02:54,503 INFO L87 Difference]: Start difference. First operand 96511 states and 147320 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-28 02:03:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:03:00,576 INFO L93 Difference]: Finished difference Result 280463 states and 429619 transitions. [2021-12-28 02:03:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:03:00,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2021-12-28 02:03:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:03:01,424 INFO L225 Difference]: With dead ends: 280463 [2021-12-28 02:03:01,425 INFO L226 Difference]: Without dead ends: 186091 [2021-12-28 02:03:01,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:03:01,917 INFO L933 BasicCegarLoop]: 4201 mSDtfsCounter, 4086 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:03:01,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4086 Valid, 4399 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:03:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186091 states.