./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro --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 351e3bc8fe69313dfbfbeaf7f37de5791a1bf381bb5ef0945347e83cb39fb485 --- 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-8393723 [2022-11-18 18:48:06,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:48:06,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:48:06,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:48:06,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:48:06,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:48:06,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:48:06,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:48:06,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:48:06,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:48:06,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:48:06,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:48:06,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:48:06,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:48:06,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:48:06,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:48:06,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:48:06,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:48:06,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:48:06,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:48:06,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:48:06,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:48:06,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:48:06,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:48:06,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:48:06,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:48:06,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:48:06,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:48:06,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:48:06,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:48:06,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:48:06,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:48:06,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:48:06,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:48:06,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:48:06,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:48:06,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:48:06,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:48:06,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:48:06,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:48:06,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:48:06,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:48:06,341 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:48:06,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:48:06,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:48:06,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:48:06,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:48:06,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:48:06,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:48:06,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:48:06,346 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:48:06,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:48:06,347 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:48:06,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:48:06,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:48:06,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:48:06,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:48:06,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:48:06,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:48:06,349 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:48:06,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:48:06,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:48:06,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:48:06,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:48:06,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:48:06,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:48:06,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:48:06,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:48:06,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:48:06,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:48:06,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:48:06,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:48:06,353 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:48:06,353 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:48:06,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:48:06,354 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_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 351e3bc8fe69313dfbfbeaf7f37de5791a1bf381bb5ef0945347e83cb39fb485 [2022-11-18 18:48:06,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:48:06,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:48:06,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:48:06,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:48:06,744 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:48:06,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-11-18 18:48:06,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/data/ab1138593/9136ec049ec0400c9d57f1eaaa12df1a/FLAG0fc30d4bd [2022-11-18 18:48:07,485 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:48:07,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-11-18 18:48:07,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/data/ab1138593/9136ec049ec0400c9d57f1eaaa12df1a/FLAG0fc30d4bd [2022-11-18 18:48:07,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/data/ab1138593/9136ec049ec0400c9d57f1eaaa12df1a [2022-11-18 18:48:07,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:48:07,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:48:07,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:07,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:48:07,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:48:07,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:07" (1/1) ... [2022-11-18 18:48:07,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec33824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:07, skipping insertion in model container [2022-11-18 18:48:07,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:07" (1/1) ... [2022-11-18 18:48:07,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:48:07,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:48:08,275 WARN L234 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_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2022-11-18 18:48:08,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:08,371 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:48:08,457 WARN L234 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_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2022-11-18 18:48:08,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:08,549 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:48:08,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08 WrapperNode [2022-11-18 18:48:08,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:08,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:08,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:48:08,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:48:08,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,647 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1107 [2022-11-18 18:48:08,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:08,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:48:08,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:48:08,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:48:08,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:48:08,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:48:08,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:48:08,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:48:08,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (1/1) ... [2022-11-18 18:48:08,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:48:08,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:08,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:08,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2bcb53-18b7-4f77-9849-75cfd092e7eb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:48:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:48:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:48:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:48:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:48:09,068 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:48:09,071 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:48:10,484 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:48:10,508 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:48:10,509 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:48:10,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:10 BoogieIcfgContainer [2022-11-18 18:48:10,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:48:10,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:48:10,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:48:10,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:48:10,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:48:07" (1/3) ... [2022-11-18 18:48:10,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9bdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:10, skipping insertion in model container [2022-11-18 18:48:10,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:08" (2/3) ... [2022-11-18 18:48:10,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9bdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:10, skipping insertion in model container [2022-11-18 18:48:10,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:10" (3/3) ... [2022-11-18 18:48:10,528 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-11-18 18:48:10,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:48:10,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:48:10,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:48:10,680 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;@7b94a59c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:48:10,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:48:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 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) [2022-11-18 18:48:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 18:48:10,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:10,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:10,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 498035691, now seen corresponding path program 1 times [2022-11-18 18:48:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:10,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970143191] [2022-11-18 18:48:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:10,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:11,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:11,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970143191] [2022-11-18 18:48:11,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970143191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:11,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:11,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:48:11,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146559079] [2022-11-18 18:48:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:11,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:48:11,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:48:11,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:48:11,434 INFO L87 Difference]: Start difference. First operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-11-18 18:48:11,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:11,627 INFO L93 Difference]: Finished difference Result 632 states and 1022 transitions. [2022-11-18 18:48:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:48:11,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2022-11-18 18:48:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:11,655 INFO L225 Difference]: With dead ends: 632 [2022-11-18 18:48:11,655 INFO L226 Difference]: Without dead ends: 327 [2022-11-18 18:48:11,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:11,664 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 163 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:11,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1414 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-18 18:48:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2022-11-18 18:48:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.5368098159509203) internal successors, (501), 326 states have internal predecessors, (501), 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) [2022-11-18 18:48:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 501 transitions. [2022-11-18 18:48:11,750 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 501 transitions. Word has length 79 [2022-11-18 18:48:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:11,751 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 501 transitions. [2022-11-18 18:48:11,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-11-18 18:48:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 501 transitions. [2022-11-18 18:48:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 18:48:11,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:11,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:11,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:48:11,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:11,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2093359288, now seen corresponding path program 1 times [2022-11-18 18:48:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:11,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400114465] [2022-11-18 18:48:11,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:11,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:11,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:11,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400114465] [2022-11-18 18:48:11,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400114465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:11,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:11,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:11,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543988904] [2022-11-18 18:48:11,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:11,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:11,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:11,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:11,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:11,947 INFO L87 Difference]: Start difference. First operand 327 states and 501 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-11-18 18:48:12,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:12,105 INFO L93 Difference]: Finished difference Result 761 states and 1193 transitions. [2022-11-18 18:48:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:12,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2022-11-18 18:48:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:12,110 INFO L225 Difference]: With dead ends: 761 [2022-11-18 18:48:12,111 INFO L226 Difference]: Without dead ends: 483 [2022-11-18 18:48:12,120 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 [2022-11-18 18:48:12,123 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 304 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:12,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 890 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-18 18:48:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2022-11-18 18:48:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.5520833333333333) internal successors, (745), 480 states have internal predecessors, (745), 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) [2022-11-18 18:48:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 745 transitions. [2022-11-18 18:48:12,208 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 745 transitions. Word has length 110 [2022-11-18 18:48:12,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:12,209 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 745 transitions. [2022-11-18 18:48:12,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-11-18 18:48:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 745 transitions. [2022-11-18 18:48:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 18:48:12,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:12,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:12,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:48:12,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:12,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash -55375790, now seen corresponding path program 1 times [2022-11-18 18:48:12,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:12,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282850477] [2022-11-18 18:48:12,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:12,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:12,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:12,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282850477] [2022-11-18 18:48:12,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282850477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:12,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:12,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:12,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771775095] [2022-11-18 18:48:12,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:12,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:12,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:12,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:12,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:12,464 INFO L87 Difference]: Start difference. First operand 481 states and 745 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2022-11-18 18:48:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:12,576 INFO L93 Difference]: Finished difference Result 1163 states and 1832 transitions. [2022-11-18 18:48:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:12,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2022-11-18 18:48:12,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:12,583 INFO L225 Difference]: With dead ends: 1163 [2022-11-18 18:48:12,583 INFO L226 Difference]: Without dead ends: 744 [2022-11-18 18:48:12,587 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 [2022-11-18 18:48:12,595 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 289 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:12,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 855 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:48:12,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-11-18 18:48:12,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2022-11-18 18:48:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.562753036437247) internal successors, (1158), 741 states have internal predecessors, (1158), 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) [2022-11-18 18:48:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1158 transitions. [2022-11-18 18:48:12,703 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1158 transitions. Word has length 112 [2022-11-18 18:48:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:12,704 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1158 transitions. [2022-11-18 18:48:12,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2022-11-18 18:48:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1158 transitions. [2022-11-18 18:48:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-18 18:48:12,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:12,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:12,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:48:12,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1569587546, now seen corresponding path program 1 times [2022-11-18 18:48:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:12,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999021335] [2022-11-18 18:48:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:12,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:12,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999021335] [2022-11-18 18:48:12,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999021335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:12,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:12,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:12,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615366007] [2022-11-18 18:48:12,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:12,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:12,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:12,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:12,909 INFO L87 Difference]: Start difference. First operand 742 states and 1158 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2022-11-18 18:48:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:13,067 INFO L93 Difference]: Finished difference Result 1834 states and 2894 transitions. [2022-11-18 18:48:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:13,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2022-11-18 18:48:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:13,077 INFO L225 Difference]: With dead ends: 1834 [2022-11-18 18:48:13,077 INFO L226 Difference]: Without dead ends: 1167 [2022-11-18 18:48:13,079 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 [2022-11-18 18:48:13,088 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 274 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:13,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 889 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:48:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-11-18 18:48:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1165. [2022-11-18 18:48:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 1.5670103092783505) internal successors, (1824), 1164 states have internal predecessors, (1824), 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) [2022-11-18 18:48:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1824 transitions. [2022-11-18 18:48:13,257 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1824 transitions. Word has length 114 [2022-11-18 18:48:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:13,258 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1824 transitions. [2022-11-18 18:48:13,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2022-11-18 18:48:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1824 transitions. [2022-11-18 18:48:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-18 18:48:13,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:13,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:13,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:48:13,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash -598144290, now seen corresponding path program 1 times [2022-11-18 18:48:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:13,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267533606] [2022-11-18 18:48:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:13,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:13,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:13,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267533606] [2022-11-18 18:48:13,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267533606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:13,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:13,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079393447] [2022-11-18 18:48:13,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:13,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:13,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:13,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:13,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:13,405 INFO L87 Difference]: Start difference. First operand 1165 states and 1824 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2022-11-18 18:48:13,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:13,694 INFO L93 Difference]: Finished difference Result 2887 states and 4547 transitions. [2022-11-18 18:48:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:13,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 116 [2022-11-18 18:48:13,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:13,705 INFO L225 Difference]: With dead ends: 2887 [2022-11-18 18:48:13,705 INFO L226 Difference]: Without dead ends: 1810 [2022-11-18 18:48:13,707 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 [2022-11-18 18:48:13,708 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 259 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:13,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 785 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-11-18 18:48:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1808. [2022-11-18 18:48:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 1807 states have (on average 1.563918096292197) internal successors, (2826), 1807 states have internal predecessors, (2826), 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) [2022-11-18 18:48:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2826 transitions. [2022-11-18 18:48:13,930 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2826 transitions. Word has length 116 [2022-11-18 18:48:13,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:13,931 INFO L495 AbstractCegarLoop]: Abstraction has 1808 states and 2826 transitions. [2022-11-18 18:48:13,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2022-11-18 18:48:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2826 transitions. [2022-11-18 18:48:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 18:48:13,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:13,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:13,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:48:13,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:13,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1082431554, now seen corresponding path program 1 times [2022-11-18 18:48:13,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:13,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233899477] [2022-11-18 18:48:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:13,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:14,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:14,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233899477] [2022-11-18 18:48:14,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233899477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:14,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:14,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:14,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069812663] [2022-11-18 18:48:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:14,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:14,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:14,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:14,063 INFO L87 Difference]: Start difference. First operand 1808 states and 2826 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:14,393 INFO L93 Difference]: Finished difference Result 4392 states and 6872 transitions. [2022-11-18 18:48:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:14,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-11-18 18:48:14,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:14,406 INFO L225 Difference]: With dead ends: 4392 [2022-11-18 18:48:14,407 INFO L226 Difference]: Without dead ends: 2685 [2022-11-18 18:48:14,410 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 [2022-11-18 18:48:14,411 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 244 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:14,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 750 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:48:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2022-11-18 18:48:14,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2683. [2022-11-18 18:48:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2682 states have (on average 1.5510812826249067) internal successors, (4160), 2682 states have internal predecessors, (4160), 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) [2022-11-18 18:48:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 4160 transitions. [2022-11-18 18:48:14,776 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 4160 transitions. Word has length 118 [2022-11-18 18:48:14,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:14,777 INFO L495 AbstractCegarLoop]: Abstraction has 2683 states and 4160 transitions. [2022-11-18 18:48:14,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 4160 transitions. [2022-11-18 18:48:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 18:48:14,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:14,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:14,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:48:14,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:14,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1267336044, now seen corresponding path program 1 times [2022-11-18 18:48:14,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:14,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290467947] [2022-11-18 18:48:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:14,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:15,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:15,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290467947] [2022-11-18 18:48:15,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290467947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:15,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:15,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:48:15,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072528332] [2022-11-18 18:48:15,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:15,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:48:15,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:48:15,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:48:15,092 INFO L87 Difference]: Start difference. First operand 2683 states and 4160 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2022-11-18 18:48:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:17,086 INFO L93 Difference]: Finished difference Result 15784 states and 24519 transitions. [2022-11-18 18:48:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:48:17,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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 120 [2022-11-18 18:48:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:17,153 INFO L225 Difference]: With dead ends: 15784 [2022-11-18 18:48:17,153 INFO L226 Difference]: Without dead ends: 13206 [2022-11-18 18:48:17,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:48:17,166 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 3063 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:17,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3063 Valid, 3100 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:48:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13206 states. [2022-11-18 18:48:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13206 to 5166. [2022-11-18 18:48:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.5295256534365924) internal successors, (7900), 5165 states have internal predecessors, (7900), 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) [2022-11-18 18:48:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 7900 transitions. [2022-11-18 18:48:18,402 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 7900 transitions. Word has length 120 [2022-11-18 18:48:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:18,404 INFO L495 AbstractCegarLoop]: Abstraction has 5166 states and 7900 transitions. [2022-11-18 18:48:18,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2022-11-18 18:48:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 7900 transitions. [2022-11-18 18:48:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 18:48:18,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:18,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:18,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:48:18,420 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:18,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash -621228175, now seen corresponding path program 1 times [2022-11-18 18:48:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:18,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389172184] [2022-11-18 18:48:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:18,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:18,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389172184] [2022-11-18 18:48:18,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389172184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:18,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:18,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:48:18,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070585160] [2022-11-18 18:48:18,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:18,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:48:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:18,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:48:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:48:18,809 INFO L87 Difference]: Start difference. First operand 5166 states and 7900 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2022-11-18 18:48:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:23,408 INFO L93 Difference]: Finished difference Result 26107 states and 39536 transitions. [2022-11-18 18:48:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:48:23,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 123 [2022-11-18 18:48:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:23,476 INFO L225 Difference]: With dead ends: 26107 [2022-11-18 18:48:23,476 INFO L226 Difference]: Without dead ends: 21036 [2022-11-18 18:48:23,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:48:23,487 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 1870 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:23,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 2475 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:48:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21036 states. [2022-11-18 18:48:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21036 to 21028. [2022-11-18 18:48:27,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21028 states, 21027 states have (on average 1.504113758500975) internal successors, (31627), 21027 states have internal predecessors, (31627), 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) [2022-11-18 18:48:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21028 states to 21028 states and 31627 transitions. [2022-11-18 18:48:27,531 INFO L78 Accepts]: Start accepts. Automaton has 21028 states and 31627 transitions. Word has length 123 [2022-11-18 18:48:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:27,532 INFO L495 AbstractCegarLoop]: Abstraction has 21028 states and 31627 transitions. [2022-11-18 18:48:27,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2022-11-18 18:48:27,533 INFO L276 IsEmpty]: Start isEmpty. Operand 21028 states and 31627 transitions. [2022-11-18 18:48:27,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 18:48:27,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:27,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:27,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:48:27,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1699798234, now seen corresponding path program 1 times [2022-11-18 18:48:27,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:27,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920511615] [2022-11-18 18:48:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:27,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:27,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:27,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920511615] [2022-11-18 18:48:27,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920511615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:27,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:27,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603418264] [2022-11-18 18:48:27,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:27,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:27,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:27,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:27,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:27,725 INFO L87 Difference]: Start difference. First operand 21028 states and 31627 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-11-18 18:48:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:34,273 INFO L93 Difference]: Finished difference Result 53370 states and 80175 transitions. [2022-11-18 18:48:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:34,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2022-11-18 18:48:34,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:34,383 INFO L225 Difference]: With dead ends: 53370 [2022-11-18 18:48:34,384 INFO L226 Difference]: Without dead ends: 36544 [2022-11-18 18:48:34,409 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 [2022-11-18 18:48:34,410 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 349 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:34,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1056 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:48:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36544 states. [2022-11-18 18:48:40,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36544 to 36542. [2022-11-18 18:48:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36542 states, 36541 states have (on average 1.4911195643250048) internal successors, (54487), 36541 states have internal predecessors, (54487), 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) [2022-11-18 18:48:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36542 states to 36542 states and 54487 transitions. [2022-11-18 18:48:40,551 INFO L78 Accepts]: Start accepts. Automaton has 36542 states and 54487 transitions. Word has length 125 [2022-11-18 18:48:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:40,552 INFO L495 AbstractCegarLoop]: Abstraction has 36542 states and 54487 transitions. [2022-11-18 18:48:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-11-18 18:48:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 36542 states and 54487 transitions. [2022-11-18 18:48:40,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 18:48:40,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:40,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:40,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:48:40,637 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1357098248, now seen corresponding path program 1 times [2022-11-18 18:48:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:40,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556171584] [2022-11-18 18:48:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:40,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:40,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556171584] [2022-11-18 18:48:40,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556171584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:40,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:40,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572291310] [2022-11-18 18:48:40,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:40,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:40,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:40,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:40,745 INFO L87 Difference]: Start difference. First operand 36542 states and 54487 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-11-18 18:48:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:49,641 INFO L93 Difference]: Finished difference Result 83822 states and 124831 transitions. [2022-11-18 18:48:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2022-11-18 18:48:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:49,818 INFO L225 Difference]: With dead ends: 83822 [2022-11-18 18:48:49,818 INFO L226 Difference]: Without dead ends: 59225 [2022-11-18 18:48:49,848 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 [2022-11-18 18:48:49,849 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 328 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:49,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1157 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:48:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59225 states. [2022-11-18 18:48:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59225 to 59223. [2022-11-18 18:48:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59223 states, 59222 states have (on average 1.4779136131842896) internal successors, (87525), 59222 states have internal predecessors, (87525), 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) [2022-11-18 18:48:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59223 states to 59223 states and 87525 transitions. [2022-11-18 18:48:58,551 INFO L78 Accepts]: Start accepts. Automaton has 59223 states and 87525 transitions. Word has length 125 [2022-11-18 18:48:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:58,552 INFO L495 AbstractCegarLoop]: Abstraction has 59223 states and 87525 transitions. [2022-11-18 18:48:58,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-11-18 18:48:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 59223 states and 87525 transitions. [2022-11-18 18:48:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 18:48:58,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:58,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:58,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:48:58,647 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash 716954330, now seen corresponding path program 1 times [2022-11-18 18:48:58,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:58,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737900428] [2022-11-18 18:48:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:58,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:58,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737900428] [2022-11-18 18:48:58,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737900428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:58,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:58,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140200754] [2022-11-18 18:48:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:58,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:58,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:58,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:58,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:58,736 INFO L87 Difference]: Start difference. First operand 59223 states and 87525 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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)