./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN --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 7b954f9d8b4ab9030eea8f5c4186ef19ab45ad4620470fe362259155373d879e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:09:36,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:09:36,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:09:36,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:09:36,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:09:36,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:09:36,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:09:36,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:09:36,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:09:36,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:09:36,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:09:36,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:09:36,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:09:36,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:09:36,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:09:36,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:09:36,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:09:36,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:09:36,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:09:36,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:09:36,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:09:36,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:09:36,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:09:36,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:09:36,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:09:36,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:09:36,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:09:36,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:09:36,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:09:36,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:09:36,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:09:36,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:09:36,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:09:36,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:09:36,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:09:36,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:09:36,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:09:36,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:09:36,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:09:36,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:09:36,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:09:36,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:09:36,410 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:09:36,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:09:36,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:09:36,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:09:36,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:09:36,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:09:36,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:09:36,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:09:36,414 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:09:36,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:09:36,415 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:09:36,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:09:36,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:09:36,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:09:36,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:09:36,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:09:36,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:09:36,417 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:09:36,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:09:36,418 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:09:36,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:09:36,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:09:36,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:09:36,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:09:36,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:09:36,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:09:36,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:09:36,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:09:36,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:09:36,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:09:36,421 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:09:36,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:09:36,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:09:36,422 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b954f9d8b4ab9030eea8f5c4186ef19ab45ad4620470fe362259155373d879e [2022-11-20 12:09:36,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:09:36,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:09:36,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:09:36,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:09:36,743 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:09:36,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-11-20 12:09:39,722 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:09:39,954 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:09:39,955 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-11-20 12:09:39,964 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/data/cbeee9479/2291d52d9e364083af23d89b7a79de0a/FLAG9e3ace1ce [2022-11-20 12:09:40,300 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/data/cbeee9479/2291d52d9e364083af23d89b7a79de0a [2022-11-20 12:09:40,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:09:40,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:09:40,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:09:40,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:09:40,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:09:40,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b1f2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40, skipping insertion in model container [2022-11-20 12:09:40,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:09:40,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:09:40,554 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-11-20 12:09:40,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:09:40,598 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:09:40,635 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-11-20 12:09:40,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:09:40,679 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:09:40,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40 WrapperNode [2022-11-20 12:09:40,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:09:40,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:09:40,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:09:40,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:09:40,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,739 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 414 [2022-11-20 12:09:40,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:09:40,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:09:40,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:09:40,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:09:40,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,765 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:09:40,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:09:40,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:09:40,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:09:40,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (1/1) ... [2022-11-20 12:09:40,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:09:40,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:40,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:09:40,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:09:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:09:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:09:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:09:40,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:09:40,967 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:09:40,969 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:09:41,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:09:41,569 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:09:41,569 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:09:41,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:09:41 BoogieIcfgContainer [2022-11-20 12:09:41,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:09:41,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:09:41,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:09:41,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:09:41,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:09:40" (1/3) ... [2022-11-20 12:09:41,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640e969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:09:41, skipping insertion in model container [2022-11-20 12:09:41,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:09:40" (2/3) ... [2022-11-20 12:09:41,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640e969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:09:41, skipping insertion in model container [2022-11-20 12:09:41,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:09:41" (3/3) ... [2022-11-20 12:09:41,589 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-11-20 12:09:41,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:09:41,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:09:41,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:09:41,710 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@72080ba6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:09:41,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:09:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 103 states have (on average 1.6990291262135921) internal successors, (175), 104 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:09:41,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:41,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:41,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:41,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2022-11-20 12:09:41,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:41,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218399453] [2022-11-20 12:09:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:41,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:42,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:42,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218399453] [2022-11-20 12:09:42,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218399453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:42,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:42,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:42,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006206992] [2022-11-20 12:09:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:42,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:09:42,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:09:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:42,146 INFO L87 Difference]: Start difference. First operand has 105 states, 103 states have (on average 1.6990291262135921) internal successors, (175), 104 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:42,226 INFO L93 Difference]: Finished difference Result 250 states and 403 transitions. [2022-11-20 12:09:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:09:42,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-20 12:09:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:42,239 INFO L225 Difference]: With dead ends: 250 [2022-11-20 12:09:42,239 INFO L226 Difference]: Without dead ends: 166 [2022-11-20 12:09:42,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:42,248 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 129 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:42,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 393 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:09:42,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-20 12:09:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2022-11-20 12:09:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.5030674846625767) internal successors, (245), 163 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 245 transitions. [2022-11-20 12:09:42,308 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 245 transitions. Word has length 48 [2022-11-20 12:09:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:42,309 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 245 transitions. [2022-11-20 12:09:42,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 245 transitions. [2022-11-20 12:09:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:09:42,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:42,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:42,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:09:42,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash 809542357, now seen corresponding path program 1 times [2022-11-20 12:09:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:42,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152862345] [2022-11-20 12:09:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:42,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:42,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:42,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152862345] [2022-11-20 12:09:42,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152862345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:42,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:42,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:42,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482084432] [2022-11-20 12:09:42,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:42,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:09:42,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:42,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:09:42,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:42,472 INFO L87 Difference]: Start difference. First operand 164 states and 245 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:42,603 INFO L93 Difference]: Finished difference Result 406 states and 629 transitions. [2022-11-20 12:09:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:09:42,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-20 12:09:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:42,606 INFO L225 Difference]: With dead ends: 406 [2022-11-20 12:09:42,606 INFO L226 Difference]: Without dead ends: 269 [2022-11-20 12:09:42,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:42,608 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 103 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:42,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:09:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-20 12:09:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2022-11-20 12:09:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5338345864661653) internal successors, (408), 266 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:42,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 408 transitions. [2022-11-20 12:09:42,689 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 408 transitions. Word has length 48 [2022-11-20 12:09:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:42,690 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 408 transitions. [2022-11-20 12:09:42,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 408 transitions. [2022-11-20 12:09:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 12:09:42,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:42,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:42,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:09:42,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash 981236370, now seen corresponding path program 1 times [2022-11-20 12:09:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:42,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017018107] [2022-11-20 12:09:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:42,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:42,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017018107] [2022-11-20 12:09:42,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017018107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:42,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:42,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:42,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362466663] [2022-11-20 12:09:42,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:42,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:09:42,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:42,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:09:42,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:42,862 INFO L87 Difference]: Start difference. First operand 267 states and 408 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:42,942 INFO L93 Difference]: Finished difference Result 683 states and 1066 transitions. [2022-11-20 12:09:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:09:42,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-20 12:09:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:42,945 INFO L225 Difference]: With dead ends: 683 [2022-11-20 12:09:42,946 INFO L226 Difference]: Without dead ends: 443 [2022-11-20 12:09:42,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:42,948 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 98 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:42,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 317 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:09:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-20 12:09:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2022-11-20 12:09:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.5454545454545454) internal successors, (680), 440 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 680 transitions. [2022-11-20 12:09:43,003 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 680 transitions. Word has length 49 [2022-11-20 12:09:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:43,003 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 680 transitions. [2022-11-20 12:09:43,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 680 transitions. [2022-11-20 12:09:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 12:09:43,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:43,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:43,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:09:43,006 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1328032366, now seen corresponding path program 1 times [2022-11-20 12:09:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:43,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516688738] [2022-11-20 12:09:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:43,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:43,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516688738] [2022-11-20 12:09:43,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516688738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:43,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:43,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090613717] [2022-11-20 12:09:43,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:43,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:09:43,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:43,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:09:43,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:43,101 INFO L87 Difference]: Start difference. First operand 441 states and 680 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:43,200 INFO L93 Difference]: Finished difference Result 1141 states and 1778 transitions. [2022-11-20 12:09:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:09:43,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-20 12:09:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:43,207 INFO L225 Difference]: With dead ends: 1141 [2022-11-20 12:09:43,207 INFO L226 Difference]: Without dead ends: 727 [2022-11-20 12:09:43,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:43,221 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 93 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:43,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:09:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-11-20 12:09:43,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 725. [2022-11-20 12:09:43,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 1.5414364640883977) internal successors, (1116), 724 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1116 transitions. [2022-11-20 12:09:43,351 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1116 transitions. Word has length 50 [2022-11-20 12:09:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:43,352 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1116 transitions. [2022-11-20 12:09:43,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1116 transitions. [2022-11-20 12:09:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 12:09:43,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:43,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:09:43,357 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:43,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1540305433, now seen corresponding path program 1 times [2022-11-20 12:09:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:43,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824656204] [2022-11-20 12:09:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:43,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:43,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:43,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824656204] [2022-11-20 12:09:43,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824656204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:43,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:43,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:09:43,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760947482] [2022-11-20 12:09:43,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:43,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:09:43,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:43,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:09:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:09:43,559 INFO L87 Difference]: Start difference. First operand 725 states and 1116 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:44,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:44,210 INFO L93 Difference]: Finished difference Result 4215 states and 6561 transitions. [2022-11-20 12:09:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:09:44,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-20 12:09:44,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:44,228 INFO L225 Difference]: With dead ends: 4215 [2022-11-20 12:09:44,228 INFO L226 Difference]: Without dead ends: 3517 [2022-11-20 12:09:44,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:09:44,235 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 849 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:44,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1016 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:09:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2022-11-20 12:09:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 1421. [2022-11-20 12:09:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.5295774647887324) internal successors, (2172), 1420 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2172 transitions. [2022-11-20 12:09:44,540 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2172 transitions. Word has length 51 [2022-11-20 12:09:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:44,543 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 2172 transitions. [2022-11-20 12:09:44,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2172 transitions. [2022-11-20 12:09:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 12:09:44,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:44,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:44,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:09:44,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:44,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:44,553 INFO L85 PathProgramCache]: Analyzing trace with hash 485371887, now seen corresponding path program 1 times [2022-11-20 12:09:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:44,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090920346] [2022-11-20 12:09:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:44,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:44,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:44,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090920346] [2022-11-20 12:09:44,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090920346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:44,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:44,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:09:44,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853609262] [2022-11-20 12:09:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:44,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:09:44,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:44,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:09:44,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:09:44,746 INFO L87 Difference]: Start difference. First operand 1421 states and 2172 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:45,899 INFO L93 Difference]: Finished difference Result 6181 states and 9408 transitions. [2022-11-20 12:09:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:09:45,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-20 12:09:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:45,916 INFO L225 Difference]: With dead ends: 6181 [2022-11-20 12:09:45,917 INFO L226 Difference]: Without dead ends: 4787 [2022-11-20 12:09:45,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:09:45,920 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 574 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:45,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 546 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:09:45,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2022-11-20 12:09:46,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4781. [2022-11-20 12:09:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4780 states have (on average 1.512133891213389) internal successors, (7228), 4780 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7228 transitions. [2022-11-20 12:09:46,857 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7228 transitions. Word has length 52 [2022-11-20 12:09:46,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:46,857 INFO L495 AbstractCegarLoop]: Abstraction has 4781 states and 7228 transitions. [2022-11-20 12:09:46,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7228 transitions. [2022-11-20 12:09:46,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 12:09:46,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:46,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:46,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:09:46,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash -381291208, now seen corresponding path program 1 times [2022-11-20 12:09:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:46,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862911679] [2022-11-20 12:09:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:46,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:46,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:46,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862911679] [2022-11-20 12:09:46,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862911679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:46,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:46,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:09:46,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651269638] [2022-11-20 12:09:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:46,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:09:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:46,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:09:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:09:46,949 INFO L87 Difference]: Start difference. First operand 4781 states and 7228 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:48,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:48,894 INFO L93 Difference]: Finished difference Result 14289 states and 21630 transitions. [2022-11-20 12:09:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:09:48,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-20 12:09:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:48,930 INFO L225 Difference]: With dead ends: 14289 [2022-11-20 12:09:48,930 INFO L226 Difference]: Without dead ends: 9535 [2022-11-20 12:09:48,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:09:48,938 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 616 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:48,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 171 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:09:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9535 states. [2022-11-20 12:09:50,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9535 to 9533. [2022-11-20 12:09:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9533 states, 9532 states have (on average 1.5035669324381031) internal successors, (14332), 9532 states have internal predecessors, (14332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9533 states to 9533 states and 14332 transitions. [2022-11-20 12:09:50,542 INFO L78 Accepts]: Start accepts. Automaton has 9533 states and 14332 transitions. Word has length 54 [2022-11-20 12:09:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:50,542 INFO L495 AbstractCegarLoop]: Abstraction has 9533 states and 14332 transitions. [2022-11-20 12:09:50,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 9533 states and 14332 transitions. [2022-11-20 12:09:50,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 12:09:50,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:50,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:50,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:09:50,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1195703203, now seen corresponding path program 1 times [2022-11-20 12:09:50,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:50,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906982836] [2022-11-20 12:09:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:50,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:50,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:50,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906982836] [2022-11-20 12:09:50,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906982836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:50,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:50,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:09:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294842590] [2022-11-20 12:09:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:09:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:09:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:09:50,885 INFO L87 Difference]: Start difference. First operand 9533 states and 14332 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:54,060 INFO L93 Difference]: Finished difference Result 19551 states and 29149 transitions. [2022-11-20 12:09:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:09:54,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-20 12:09:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:54,126 INFO L225 Difference]: With dead ends: 19551 [2022-11-20 12:09:54,127 INFO L226 Difference]: Without dead ends: 19549 [2022-11-20 12:09:54,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:09:54,135 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 226 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:54,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 705 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:09:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19549 states. [2022-11-20 12:09:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19549 to 10045. [2022-11-20 12:09:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10045 states, 10044 states have (on average 1.4778972520908005) internal successors, (14844), 10044 states have internal predecessors, (14844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10045 states to 10045 states and 14844 transitions. [2022-11-20 12:09:56,309 INFO L78 Accepts]: Start accepts. Automaton has 10045 states and 14844 transitions. Word has length 54 [2022-11-20 12:09:56,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:56,309 INFO L495 AbstractCegarLoop]: Abstraction has 10045 states and 14844 transitions. [2022-11-20 12:09:56,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 10045 states and 14844 transitions. [2022-11-20 12:09:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 12:09:56,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:56,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:56,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:09:56,311 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1598479419, now seen corresponding path program 1 times [2022-11-20 12:09:56,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:56,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064652279] [2022-11-20 12:09:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:56,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:09:56,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:56,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064652279] [2022-11-20 12:09:56,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064652279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:56,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:56,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:09:56,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539668562] [2022-11-20 12:09:56,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:56,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:09:56,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:56,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:09:56,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:56,373 INFO L87 Difference]: Start difference. First operand 10045 states and 14844 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:09:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:58,076 INFO L93 Difference]: Finished difference Result 24307 states and 35900 transitions. [2022-11-20 12:09:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:09:58,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-20 12:09:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:58,106 INFO L225 Difference]: With dead ends: 24307 [2022-11-20 12:09:58,106 INFO L226 Difference]: Without dead ends: 14289 [2022-11-20 12:09:58,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:09:58,121 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 83 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:58,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 295 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:09:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14289 states. [2022-11-20 12:10:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14289 to 14287. [2022-11-20 12:10:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14287 states, 14286 states have (on average 1.4678706425871482) internal successors, (20970), 14286 states have internal predecessors, (20970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:00,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14287 states to 14287 states and 20970 transitions. [2022-11-20 12:10:00,573 INFO L78 Accepts]: Start accepts. Automaton has 14287 states and 20970 transitions. Word has length 55 [2022-11-20 12:10:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:00,573 INFO L495 AbstractCegarLoop]: Abstraction has 14287 states and 20970 transitions. [2022-11-20 12:10:00,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 14287 states and 20970 transitions. [2022-11-20 12:10:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 12:10:00,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:00,580 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:10:00,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:10:00,580 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:10:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash -517305580, now seen corresponding path program 1 times [2022-11-20 12:10:00,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:00,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076810705] [2022-11-20 12:10:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:00,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:00,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:00,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076810705] [2022-11-20 12:10:00,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076810705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:00,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8118537] [2022-11-20 12:10:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:00,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:00,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:00,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:00,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22e3ad66-9eee-47d8-9b2a-a82c5e35f137/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:10:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:01,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:10:01,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:10:01,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:10:01,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8118537] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:01,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:10:01,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 17 [2022-11-20 12:10:01,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085815743] [2022-11-20 12:10:01,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:01,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:10:01,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:01,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:10:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:10:01,713 INFO L87 Difference]: Start difference. First operand 14287 states and 20970 transitions. Second operand has 17 states, 17 states have (on average 12.705882352941176) internal successors, (216), 17 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:38,672 INFO L93 Difference]: Finished difference Result 185863 states and 269384 transitions. [2022-11-20 12:10:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-11-20 12:10:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.705882352941176) internal successors, (216), 17 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-20 12:10:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:39,405 INFO L225 Difference]: With dead ends: 185863 [2022-11-20 12:10:39,406 INFO L226 Difference]: Without dead ends: 172717 [2022-11-20 12:10:39,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13958 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4825, Invalid=25975, Unknown=0, NotChecked=0, Total=30800 [2022-11-20 12:10:39,524 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 11575 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 4106 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11575 SdHoareTripleChecker+Valid, 4192 SdHoareTripleChecker+Invalid, 4186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:39,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11575 Valid, 4192 Invalid, 4186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 4106 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 12:10:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172717 states.