./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R --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 851dc7d49dcc9fde277beeb190c3ab252014728a3bd4281f423bffd927fb4430 --- 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-38b53e6 [2022-11-25 17:46:24,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:46:24,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:46:24,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:46:24,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:46:24,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:46:24,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:46:24,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:46:24,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:46:24,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:46:24,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:46:24,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:46:24,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:46:24,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:46:24,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:46:24,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:46:24,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:46:24,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:46:24,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:46:24,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:46:24,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:46:24,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:46:24,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:46:24,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:46:24,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:46:24,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:46:24,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:46:24,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:46:24,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:46:24,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:46:24,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:46:24,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:46:24,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:46:24,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:46:24,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:46:24,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:46:24,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:46:24,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:46:24,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:46:24,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:46:24,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:46:24,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:46:24,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:46:24,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:46:24,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:46:24,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:46:24,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:46:24,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:46:24,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:46:24,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:46:24,897 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:46:24,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:46:24,899 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:46:24,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:46:24,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:46:24,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:46:24,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:46:24,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:46:24,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:46:24,900 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:46:24,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:46:24,901 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:46:24,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:46:24,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:46:24,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:46:24,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:46:24,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:46:24,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:46:24,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:46:24,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:46:24,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:46:24,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:46:24,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:46:24,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:46:24,904 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:46:24,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:46:24,905 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 851dc7d49dcc9fde277beeb190c3ab252014728a3bd4281f423bffd927fb4430 [2022-11-25 17:46:25,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:46:25,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:46:25,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:46:25,276 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:46:25,276 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:46:25,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-25 17:46:28,350 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:46:28,685 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:46:28,686 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-25 17:46:28,696 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/data/a130fb415/9f0debe5d59a4a79b49a19ea4309b5b1/FLAG6c101ad26 [2022-11-25 17:46:28,711 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/data/a130fb415/9f0debe5d59a4a79b49a19ea4309b5b1 [2022-11-25 17:46:28,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:46:28,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:46:28,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:46:28,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:46:28,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:46:28,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:46:28" (1/1) ... [2022-11-25 17:46:28,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fdf8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:28, skipping insertion in model container [2022-11-25 17:46:28,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:46:28" (1/1) ... [2022-11-25 17:46:28,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:46:28,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:46:29,123 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2022-11-25 17:46:29,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:46:29,221 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:46:29,300 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2022-11-25 17:46:29,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:46:29,404 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:46:29,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29 WrapperNode [2022-11-25 17:46:29,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:46:29,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:46:29,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:46:29,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:46:29,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,473 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 946 [2022-11-25 17:46:29,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:46:29,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:46:29,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:46:29,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:46:29,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,528 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:46:29,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:46:29,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:46:29,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:46:29,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (1/1) ... [2022-11-25 17:46:29,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:46:29,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:29,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:46:29,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0b49ad-e057-4d18-b164-bb5fbdab7a62/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:46:29,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:46:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:46:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:46:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:46:29,863 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:46:29,866 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:46:30,870 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:46:30,879 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:46:30,879 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:46:30,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:46:30 BoogieIcfgContainer [2022-11-25 17:46:30,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:46:30,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:46:30,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:46:30,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:46:30,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:46:28" (1/3) ... [2022-11-25 17:46:30,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fa1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:46:30, skipping insertion in model container [2022-11-25 17:46:30,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:46:29" (2/3) ... [2022-11-25 17:46:30,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fa1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:46:30, skipping insertion in model container [2022-11-25 17:46:30,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:46:30" (3/3) ... [2022-11-25 17:46:30,892 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-25 17:46:30,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:46:30,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:46:30,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:46:30,979 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;@54b53d0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:46:30,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:46:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 256 states have (on average 1.72265625) internal successors, (441), 257 states have internal predecessors, (441), 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) [2022-11-25 17:46:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-25 17:46:30,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:30,997 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] [2022-11-25 17:46:30,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:31,003 INFO L85 PathProgramCache]: Analyzing trace with hash -165426501, now seen corresponding path program 1 times [2022-11-25 17:46:31,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:31,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520445730] [2022-11-25 17:46:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:31,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:31,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:31,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520445730] [2022-11-25 17:46:31,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520445730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:31,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:31,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:46:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384687152] [2022-11-25 17:46:31,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:31,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:46:31,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:31,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:46:31,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:46:31,967 INFO L87 Difference]: Start difference. First operand has 258 states, 256 states have (on average 1.72265625) internal successors, (441), 257 states have internal predecessors, (441), 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 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2022-11-25 17:46:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:32,435 INFO L93 Difference]: Finished difference Result 1163 states and 1886 transitions. [2022-11-25 17:46:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:46:32,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 96 [2022-11-25 17:46:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:32,457 INFO L225 Difference]: With dead ends: 1163 [2022-11-25 17:46:32,459 INFO L226 Difference]: Without dead ends: 1022 [2022-11-25 17:46:32,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:46:32,471 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 3878 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3878 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:32,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3878 Valid, 3983 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:46:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-11-25 17:46:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 395. [2022-11-25 17:46:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.5076142131979695) internal successors, (594), 394 states have internal predecessors, (594), 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) [2022-11-25 17:46:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 594 transitions. [2022-11-25 17:46:32,600 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 594 transitions. Word has length 96 [2022-11-25 17:46:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:32,601 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 594 transitions. [2022-11-25 17:46:32,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2022-11-25 17:46:32,602 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 594 transitions. [2022-11-25 17:46:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 17:46:32,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:32,605 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] [2022-11-25 17:46:32,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:46:32,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:32,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1176866191, now seen corresponding path program 1 times [2022-11-25 17:46:32,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:32,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051801626] [2022-11-25 17:46:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:33,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051801626] [2022-11-25 17:46:33,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051801626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:33,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:33,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:46:33,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153294033] [2022-11-25 17:46:33,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:33,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:46:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:46:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:46:33,145 INFO L87 Difference]: Start difference. First operand 395 states and 594 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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) [2022-11-25 17:46:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:33,885 INFO L93 Difference]: Finished difference Result 1972 states and 3070 transitions. [2022-11-25 17:46:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:46:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 97 [2022-11-25 17:46:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:33,893 INFO L225 Difference]: With dead ends: 1972 [2022-11-25 17:46:33,894 INFO L226 Difference]: Without dead ends: 1676 [2022-11-25 17:46:33,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:46:33,897 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1755 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:33,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 2078 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:46:33,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2022-11-25 17:46:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1666. [2022-11-25 17:46:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 1.5537537537537538) internal successors, (2587), 1665 states have internal predecessors, (2587), 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) [2022-11-25 17:46:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2587 transitions. [2022-11-25 17:46:34,215 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2587 transitions. Word has length 97 [2022-11-25 17:46:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:34,216 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2587 transitions. [2022-11-25 17:46:34,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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) [2022-11-25 17:46:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2587 transitions. [2022-11-25 17:46:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 17:46:34,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:34,220 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] [2022-11-25 17:46:34,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:46:34,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:34,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1298319018, now seen corresponding path program 1 times [2022-11-25 17:46:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:34,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005585274] [2022-11-25 17:46:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:34,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:34,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:34,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005585274] [2022-11-25 17:46:34,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005585274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:34,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:34,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:34,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94012506] [2022-11-25 17:46:34,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:34,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:46:34,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:46:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:46:34,369 INFO L87 Difference]: Start difference. First operand 1666 states and 2587 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:35,252 INFO L93 Difference]: Finished difference Result 4636 states and 7277 transitions. [2022-11-25 17:46:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:35,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-11-25 17:46:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:35,264 INFO L225 Difference]: With dead ends: 4636 [2022-11-25 17:46:35,265 INFO L226 Difference]: Without dead ends: 3021 [2022-11-25 17:46:35,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:35,276 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1485 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:35,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 355 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:46:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-11-25 17:46:35,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3019. [2022-11-25 17:46:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 3018 states have (on average 1.563949635520212) internal successors, (4720), 3018 states have internal predecessors, (4720), 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) [2022-11-25 17:46:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 4720 transitions. [2022-11-25 17:46:35,814 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 4720 transitions. Word has length 98 [2022-11-25 17:46:35,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:35,815 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 4720 transitions. [2022-11-25 17:46:35,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 4720 transitions. [2022-11-25 17:46:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 17:46:35,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:35,825 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] [2022-11-25 17:46:35,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:46:35,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2114426094, now seen corresponding path program 1 times [2022-11-25 17:46:35,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:35,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126765431] [2022-11-25 17:46:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:35,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:35,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126765431] [2022-11-25 17:46:35,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126765431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:35,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:35,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:35,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070769943] [2022-11-25 17:46:35,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:35,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:46:36,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:36,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:46:36,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:46:36,001 INFO L87 Difference]: Start difference. First operand 3019 states and 4720 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:37,161 INFO L93 Difference]: Finished difference Result 8182 states and 12873 transitions. [2022-11-25 17:46:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:37,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-11-25 17:46:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:37,183 INFO L225 Difference]: With dead ends: 8182 [2022-11-25 17:46:37,185 INFO L226 Difference]: Without dead ends: 5320 [2022-11-25 17:46:37,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:37,190 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1353 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:37,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 363 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:46:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5320 states. [2022-11-25 17:46:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5320 to 5318. [2022-11-25 17:46:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 1.5653564039872108) internal successors, (8323), 5317 states have internal predecessors, (8323), 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) [2022-11-25 17:46:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 8323 transitions. [2022-11-25 17:46:38,050 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 8323 transitions. Word has length 98 [2022-11-25 17:46:38,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:38,050 INFO L495 AbstractCegarLoop]: Abstraction has 5318 states and 8323 transitions. [2022-11-25 17:46:38,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:38,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 8323 transitions. [2022-11-25 17:46:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 17:46:38,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:38,055 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] [2022-11-25 17:46:38,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:46:38,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:38,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash -280718047, now seen corresponding path program 1 times [2022-11-25 17:46:38,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:38,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805926659] [2022-11-25 17:46:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:38,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:38,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805926659] [2022-11-25 17:46:38,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805926659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:38,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:38,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:38,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611290746] [2022-11-25 17:46:38,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:38,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:46:38,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:38,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:46:38,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:46:38,270 INFO L87 Difference]: Start difference. First operand 5318 states and 8323 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:40,131 INFO L93 Difference]: Finished difference Result 15000 states and 23599 transitions. [2022-11-25 17:46:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:40,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-11-25 17:46:40,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:40,171 INFO L225 Difference]: With dead ends: 15000 [2022-11-25 17:46:40,172 INFO L226 Difference]: Without dead ends: 9880 [2022-11-25 17:46:40,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:40,180 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1339 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:40,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 372 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:46:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9880 states. [2022-11-25 17:46:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9880 to 9878. [2022-11-25 17:46:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9878 states, 9877 states have (on average 1.5669737774627923) internal successors, (15477), 9877 states have internal predecessors, (15477), 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) [2022-11-25 17:46:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9878 states to 9878 states and 15477 transitions. [2022-11-25 17:46:41,547 INFO L78 Accepts]: Start accepts. Automaton has 9878 states and 15477 transitions. Word has length 98 [2022-11-25 17:46:41,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:41,547 INFO L495 AbstractCegarLoop]: Abstraction has 9878 states and 15477 transitions. [2022-11-25 17:46:41,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9878 states and 15477 transitions. [2022-11-25 17:46:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 17:46:41,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:41,553 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] [2022-11-25 17:46:41,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:46:41,554 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:41,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:41,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1024308035, now seen corresponding path program 1 times [2022-11-25 17:46:41,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:41,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755111252] [2022-11-25 17:46:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:41,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:41,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:41,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755111252] [2022-11-25 17:46:41,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755111252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:41,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:41,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:41,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547047616] [2022-11-25 17:46:41,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:46:41,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:41,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:46:41,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:46:41,722 INFO L87 Difference]: Start difference. First operand 9878 states and 15477 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:44,222 INFO L93 Difference]: Finished difference Result 28884 states and 45351 transitions. [2022-11-25 17:46:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:44,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-11-25 17:46:44,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:44,283 INFO L225 Difference]: With dead ends: 28884 [2022-11-25 17:46:44,283 INFO L226 Difference]: Without dead ends: 19126 [2022-11-25 17:46:44,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:44,297 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1377 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:44,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 359 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:46:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2022-11-25 17:46:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 19124. [2022-11-25 17:46:46,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19124 states, 19123 states have (on average 1.5631438581812478) internal successors, (29892), 19123 states have internal predecessors, (29892), 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) [2022-11-25 17:46:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19124 states to 19124 states and 29892 transitions. [2022-11-25 17:46:46,665 INFO L78 Accepts]: Start accepts. Automaton has 19124 states and 29892 transitions. Word has length 98 [2022-11-25 17:46:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:46,665 INFO L495 AbstractCegarLoop]: Abstraction has 19124 states and 29892 transitions. [2022-11-25 17:46:46,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:46,666 INFO L276 IsEmpty]: Start isEmpty. Operand 19124 states and 29892 transitions. [2022-11-25 17:46:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 17:46:46,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:46,672 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] [2022-11-25 17:46:46,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:46:46,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash -866521676, now seen corresponding path program 1 times [2022-11-25 17:46:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:46,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138700700] [2022-11-25 17:46:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:46,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:46,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:46,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138700700] [2022-11-25 17:46:46,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138700700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:46,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:46,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:46,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359475336] [2022-11-25 17:46:46,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:46,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:46:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:46:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:46:46,800 INFO L87 Difference]: Start difference. First operand 19124 states and 29892 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:51,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:51,650 INFO L93 Difference]: Finished difference Result 56728 states and 88774 transitions. [2022-11-25 17:46:51,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:51,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-11-25 17:46:51,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:51,758 INFO L225 Difference]: With dead ends: 56728 [2022-11-25 17:46:51,758 INFO L226 Difference]: Without dead ends: 37694 [2022-11-25 17:46:51,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:51,788 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1403 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:51,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 357 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:46:51,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37694 states. [2022-11-25 17:46:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37694 to 37692. [2022-11-25 17:46:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37692 states, 37691 states have (on average 1.5573479079886445) internal successors, (58698), 37691 states have internal predecessors, (58698), 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) [2022-11-25 17:46:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37692 states to 37692 states and 58698 transitions. [2022-11-25 17:46:56,743 INFO L78 Accepts]: Start accepts. Automaton has 37692 states and 58698 transitions. Word has length 98 [2022-11-25 17:46:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:56,743 INFO L495 AbstractCegarLoop]: Abstraction has 37692 states and 58698 transitions. [2022-11-25 17:46:56,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:46:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 37692 states and 58698 transitions. [2022-11-25 17:46:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 17:46:56,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:56,753 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] [2022-11-25 17:46:56,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:46:56,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash -677209499, now seen corresponding path program 1 times [2022-11-25 17:46:56,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:56,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65081120] [2022-11-25 17:46:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:56,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:56,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:56,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65081120] [2022-11-25 17:46:56,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65081120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:56,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:56,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:56,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380930373] [2022-11-25 17:46:56,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:56,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:46:56,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:56,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:46:56,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:46:56,896 INFO L87 Difference]: Start difference. First operand 37692 states and 58698 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:47:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:47:07,376 INFO L93 Difference]: Finished difference Result 112444 states and 175228 transitions. [2022-11-25 17:47:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:47:07,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-11-25 17:47:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:47:07,533 INFO L225 Difference]: With dead ends: 112444 [2022-11-25 17:47:07,533 INFO L226 Difference]: Without dead ends: 74819 [2022-11-25 17:47:07,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:47:07,782 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1425 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:47:07,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 357 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:47:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74819 states. [2022-11-25 17:47:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74819 to 74817. [2022-11-25 17:47:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74817 states, 74816 states have (on average 1.5499625748502994) internal successors, (115962), 74816 states have internal predecessors, (115962), 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) [2022-11-25 17:47:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74817 states to 74817 states and 115962 transitions. [2022-11-25 17:47:17,580 INFO L78 Accepts]: Start accepts. Automaton has 74817 states and 115962 transitions. Word has length 98 [2022-11-25 17:47:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:47:17,581 INFO L495 AbstractCegarLoop]: Abstraction has 74817 states and 115962 transitions. [2022-11-25 17:47:17,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-25 17:47:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 74817 states and 115962 transitions. [2022-11-25 17:47:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 17:47:17,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:47:17,596 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] [2022-11-25 17:47:17,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:47:17,599 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:47:17,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:17,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1615132955, now seen corresponding path program 1 times [2022-11-25 17:47:17,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:17,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414045001] [2022-11-25 17:47:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:17,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:47:18,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:47:18,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414045001] [2022-11-25 17:47:18,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414045001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:47:18,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:47:18,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:47:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709621209] [2022-11-25 17:47:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:47:18,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:47:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:47:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:47:18,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:47:18,128 INFO L87 Difference]: Start difference. First operand 74817 states and 115962 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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)