./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/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_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/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_d08bde2c-1501-491a-ab3b-534e06691d37/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 5e99154d55f7fd098c0e840b496605adea5c7214bf70234e7c54dceeadfa306b --- 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 20:31:40,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:31:40,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:31:41,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:31:41,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:31:41,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:31:41,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:31:41,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:31:41,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:31:41,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:31:41,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:31:41,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:31:41,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:31:41,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:31:41,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:31:41,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:31:41,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:31:41,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:31:41,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:31:41,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:31:41,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:31:41,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:31:41,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:31:41,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:31:41,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:31:41,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:31:41,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:31:41,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:31:41,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:31:41,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:31:41,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:31:41,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:31:41,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:31:41,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:31:41,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:31:41,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:31:41,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:31:41,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:31:41,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:31:41,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:31:41,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:31:41,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:31:41,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:31:41,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:31:41,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:31:41,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:31:41,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:31:41,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:31:41,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:31:41,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:31:41,127 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:31:41,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:31:41,128 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:31:41,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:31:41,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:31:41,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:31:41,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:31:41,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:31:41,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:31:41,129 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:31:41,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:31:41,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:31:41,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:31:41,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:31:41,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:31:41,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:31:41,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:31:41,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:31:41,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:31:41,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:31:41,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:31:41,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:31:41,134 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:31:41,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:31:41,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:31:41,134 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_d08bde2c-1501-491a-ab3b-534e06691d37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e99154d55f7fd098c0e840b496605adea5c7214bf70234e7c54dceeadfa306b [2022-11-18 20:31:41,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:31:41,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:31:41,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:31:41,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:31:41,410 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:31:41,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2022-11-18 20:31:41,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/data/66e918a70/2bf43f7037cd42f3ad05d9a605ebdae3/FLAG80dd82a5c [2022-11-18 20:31:41,958 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:31:41,959 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2022-11-18 20:31:41,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/data/66e918a70/2bf43f7037cd42f3ad05d9a605ebdae3/FLAG80dd82a5c [2022-11-18 20:31:42,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/data/66e918a70/2bf43f7037cd42f3ad05d9a605ebdae3 [2022-11-18 20:31:42,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:31:42,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:31:42,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:31:42,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:31:42,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:31:42,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@172977ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42, skipping insertion in model container [2022-11-18 20:31:42,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:31:42,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:31:42,635 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_d08bde2c-1501-491a-ab3b-534e06691d37/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2022-11-18 20:31:42,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:31:42,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:31:42,752 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_d08bde2c-1501-491a-ab3b-534e06691d37/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2022-11-18 20:31:42,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:31:42,776 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:31:42,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42 WrapperNode [2022-11-18 20:31:42,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:31:42,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:31:42,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:31:42,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:31:42,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,850 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 350 [2022-11-18 20:31:42,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:31:42,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:31:42,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:31:42,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:31:42,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:31:42,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:31:42,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:31:42,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:31:42,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (1/1) ... [2022-11-18 20:31:42,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:31:42,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:42,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:31:42,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:31:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:31:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:31:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:31:43,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:31:43,138 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:31:43,140 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:31:43,800 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:31:43,808 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:31:43,809 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:31:43,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:31:43 BoogieIcfgContainer [2022-11-18 20:31:43,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:31:43,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:31:43,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:31:43,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:31:43,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:31:42" (1/3) ... [2022-11-18 20:31:43,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4c117b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:31:43, skipping insertion in model container [2022-11-18 20:31:43,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:31:42" (2/3) ... [2022-11-18 20:31:43,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4c117b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:31:43, skipping insertion in model container [2022-11-18 20:31:43,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:31:43" (3/3) ... [2022-11-18 20:31:43,821 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2022-11-18 20:31:43,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:31:43,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:31:43,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:31:43,914 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;@f234f90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:31:43,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:31:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 100 states have (on average 1.75) internal successors, (175), 101 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 20:31:43,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:43,930 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] [2022-11-18 20:31:43,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:43,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1868146540, now seen corresponding path program 1 times [2022-11-18 20:31:43,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:43,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428069028] [2022-11-18 20:31:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:43,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:44,275 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 20:31:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:44,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428069028] [2022-11-18 20:31:44,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428069028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:44,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:44,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:31:44,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995668490] [2022-11-18 20:31:44,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:44,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:31:44,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:44,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:31:44,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:31:44,335 INFO L87 Difference]: Start difference. First operand has 102 states, 100 states have (on average 1.75) internal successors, (175), 101 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 20:31:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:44,388 INFO L93 Difference]: Finished difference Result 167 states and 280 transitions. [2022-11-18 20:31:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:31:44,390 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2022-11-18 20:31:44,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:44,404 INFO L225 Difference]: With dead ends: 167 [2022-11-18 20:31:44,405 INFO L226 Difference]: Without dead ends: 98 [2022-11-18 20:31:44,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:31:44,414 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:44,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:44,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-18 20:31:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-18 20:31:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.731958762886598) internal successors, (168), 97 states have internal predecessors, (168), 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 20:31:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 168 transitions. [2022-11-18 20:31:44,479 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 168 transitions. Word has length 33 [2022-11-18 20:31:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:44,479 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 168 transitions. [2022-11-18 20:31:44,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 20:31:44,480 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 168 transitions. [2022-11-18 20:31:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 20:31:44,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:44,486 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] [2022-11-18 20:31:44,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:31:44,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:44,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1917347666, now seen corresponding path program 1 times [2022-11-18 20:31:44,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:44,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830427538] [2022-11-18 20:31:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:44,701 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 20:31:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:44,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830427538] [2022-11-18 20:31:44,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830427538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:44,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:44,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:31:44,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429162575] [2022-11-18 20:31:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:44,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:31:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:31:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:31:44,706 INFO L87 Difference]: Start difference. First operand 98 states and 168 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 20:31:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:44,797 INFO L93 Difference]: Finished difference Result 162 states and 270 transitions. [2022-11-18 20:31:44,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:31:44,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2022-11-18 20:31:44,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:44,799 INFO L225 Difference]: With dead ends: 162 [2022-11-18 20:31:44,800 INFO L226 Difference]: Without dead ends: 98 [2022-11-18 20:31:44,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:31:44,802 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 3 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:44,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 629 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:31:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-18 20:31:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-18 20:31:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.402061855670103) internal successors, (136), 97 states have internal predecessors, (136), 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 20:31:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2022-11-18 20:31:44,810 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 33 [2022-11-18 20:31:44,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:44,811 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2022-11-18 20:31:44,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 20:31:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2022-11-18 20:31:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:31:44,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:44,813 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] [2022-11-18 20:31:44,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:31:44,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:44,814 INFO L85 PathProgramCache]: Analyzing trace with hash 13017383, now seen corresponding path program 1 times [2022-11-18 20:31:44,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:44,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959754950] [2022-11-18 20:31:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:44,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:44,976 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 20:31:44,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:44,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959754950] [2022-11-18 20:31:44,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959754950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:44,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:44,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:44,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299626225] [2022-11-18 20:31:44,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:44,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:44,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:44,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:44,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:44,980 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:31:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:45,012 INFO L93 Difference]: Finished difference Result 210 states and 318 transitions. [2022-11-18 20:31:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:45,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-11-18 20:31:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:45,014 INFO L225 Difference]: With dead ends: 210 [2022-11-18 20:31:45,014 INFO L226 Difference]: Without dead ends: 150 [2022-11-18 20:31:45,015 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 20:31:45,017 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 82 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:45,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 298 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:45,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-18 20:31:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2022-11-18 20:31:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.4829931972789117) internal successors, (218), 147 states have internal predecessors, (218), 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 20:31:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 218 transitions. [2022-11-18 20:31:45,033 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 218 transitions. Word has length 64 [2022-11-18 20:31:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:45,033 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 218 transitions. [2022-11-18 20:31:45,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:31:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 218 transitions. [2022-11-18 20:31:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:31:45,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:45,036 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] [2022-11-18 20:31:45,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:31:45,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:45,037 INFO L85 PathProgramCache]: Analyzing trace with hash -586300056, now seen corresponding path program 1 times [2022-11-18 20:31:45,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:45,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164355856] [2022-11-18 20:31:45,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:45,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,196 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 20:31:45,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:45,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164355856] [2022-11-18 20:31:45,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164355856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:45,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:45,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:45,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630001671] [2022-11-18 20:31:45,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:45,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:45,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:45,200 INFO L87 Difference]: Start difference. First operand 148 states and 218 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:31:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:45,245 INFO L93 Difference]: Finished difference Result 352 states and 550 transitions. [2022-11-18 20:31:45,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:45,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-11-18 20:31:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:45,250 INFO L225 Difference]: With dead ends: 352 [2022-11-18 20:31:45,250 INFO L226 Difference]: Without dead ends: 242 [2022-11-18 20:31:45,255 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 20:31:45,265 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 78 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:45,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 295 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-18 20:31:45,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 240. [2022-11-18 20:31:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.5355648535564854) internal successors, (367), 239 states have internal predecessors, (367), 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 20:31:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 367 transitions. [2022-11-18 20:31:45,305 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 367 transitions. Word has length 64 [2022-11-18 20:31:45,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:45,305 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 367 transitions. [2022-11-18 20:31:45,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 20:31:45,306 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 367 transitions. [2022-11-18 20:31:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:31:45,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:45,307 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] [2022-11-18 20:31:45,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:31:45,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash 592130601, now seen corresponding path program 1 times [2022-11-18 20:31:45,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:45,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137537274] [2022-11-18 20:31:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:45,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,579 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 20:31:45,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:45,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137537274] [2022-11-18 20:31:45,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137537274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:45,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:45,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:31:45,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122756629] [2022-11-18 20:31:45,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:45,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:31:45,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:31:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:31:45,589 INFO L87 Difference]: Start difference. First operand 240 states and 367 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 20:31:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:45,843 INFO L93 Difference]: Finished difference Result 1452 states and 2341 transitions. [2022-11-18 20:31:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:31:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2022-11-18 20:31:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:45,851 INFO L225 Difference]: With dead ends: 1452 [2022-11-18 20:31:45,851 INFO L226 Difference]: Without dead ends: 1250 [2022-11-18 20:31:45,853 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 20:31:45,860 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1357 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:45,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 974 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:31:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-11-18 20:31:45,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 440. [2022-11-18 20:31:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.5649202733485195) internal successors, (687), 439 states have internal predecessors, (687), 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 20:31:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 687 transitions. [2022-11-18 20:31:45,924 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 687 transitions. Word has length 64 [2022-11-18 20:31:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:45,927 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 687 transitions. [2022-11-18 20:31:45,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 20:31:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 687 transitions. [2022-11-18 20:31:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:31:45,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:45,938 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] [2022-11-18 20:31:45,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:31:45,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:45,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:45,940 INFO L85 PathProgramCache]: Analyzing trace with hash 792856163, now seen corresponding path program 1 times [2022-11-18 20:31:45,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:45,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860782677] [2022-11-18 20:31:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:45,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:46,353 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 20:31:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:46,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860782677] [2022-11-18 20:31:46,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860782677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:46,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:46,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:31:46,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469090139] [2022-11-18 20:31:46,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:46,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:31:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:46,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:31:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:31:46,357 INFO L87 Difference]: Start difference. First operand 440 states and 687 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 20:31:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:46,580 INFO L93 Difference]: Finished difference Result 874 states and 1368 transitions. [2022-11-18 20:31:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:31:46,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 65 [2022-11-18 20:31:46,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:46,586 INFO L225 Difference]: With dead ends: 874 [2022-11-18 20:31:46,586 INFO L226 Difference]: Without dead ends: 872 [2022-11-18 20:31:46,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:31:46,590 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 648 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:46,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 696 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-18 20:31:46,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 464. [2022-11-18 20:31:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.5356371490280778) internal successors, (711), 463 states have internal predecessors, (711), 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 20:31:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 711 transitions. [2022-11-18 20:31:46,653 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 711 transitions. Word has length 65 [2022-11-18 20:31:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:46,653 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 711 transitions. [2022-11-18 20:31:46,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 20:31:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 711 transitions. [2022-11-18 20:31:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:31:46,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:46,658 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] [2022-11-18 20:31:46,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:31:46,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:46,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:46,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1138684095, now seen corresponding path program 1 times [2022-11-18 20:31:46,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:46,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733895421] [2022-11-18 20:31:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:46,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:46,767 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 20:31:46,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:46,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733895421] [2022-11-18 20:31:46,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733895421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:46,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:46,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:46,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496252846] [2022-11-18 20:31:46,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:46,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:46,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:46,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:46,770 INFO L87 Difference]: Start difference. First operand 464 states and 711 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 20:31:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:46,905 INFO L93 Difference]: Finished difference Result 1256 states and 1957 transitions. [2022-11-18 20:31:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-11-18 20:31:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:46,910 INFO L225 Difference]: With dead ends: 1256 [2022-11-18 20:31:46,910 INFO L226 Difference]: Without dead ends: 830 [2022-11-18 20:31:46,911 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 20:31:46,913 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 63 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:46,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 231 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:46,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-11-18 20:31:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 828. [2022-11-18 20:31:47,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 1.5417170495767836) internal successors, (1275), 827 states have internal predecessors, (1275), 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 20:31:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1275 transitions. [2022-11-18 20:31:47,019 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1275 transitions. Word has length 66 [2022-11-18 20:31:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:47,021 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1275 transitions. [2022-11-18 20:31:47,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 20:31:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1275 transitions. [2022-11-18 20:31:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:31:47,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:47,022 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] [2022-11-18 20:31:47,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:31:47,023 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:47,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:47,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1571823680, now seen corresponding path program 1 times [2022-11-18 20:31:47,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:47,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611437404] [2022-11-18 20:31:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:47,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:47,097 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 20:31:47,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:47,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611437404] [2022-11-18 20:31:47,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611437404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:47,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:47,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:47,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124487500] [2022-11-18 20:31:47,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:47,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:47,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:47,100 INFO L87 Difference]: Start difference. First operand 828 states and 1275 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 20:31:47,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:47,267 INFO L93 Difference]: Finished difference Result 1618 states and 2512 transitions. [2022-11-18 20:31:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:47,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-11-18 20:31:47,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:47,272 INFO L225 Difference]: With dead ends: 1618 [2022-11-18 20:31:47,273 INFO L226 Difference]: Without dead ends: 1192 [2022-11-18 20:31:47,274 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 20:31:47,274 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 86 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:47,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 308 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:47,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-11-18 20:31:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1190. [2022-11-18 20:31:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 1.5382674516400336) internal successors, (1829), 1189 states have internal predecessors, (1829), 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 20:31:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1829 transitions. [2022-11-18 20:31:47,426 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1829 transitions. Word has length 66 [2022-11-18 20:31:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:47,427 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1829 transitions. [2022-11-18 20:31:47,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 20:31:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1829 transitions. [2022-11-18 20:31:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:31:47,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:47,428 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] [2022-11-18 20:31:47,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:31:47,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:47,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1973579108, now seen corresponding path program 1 times [2022-11-18 20:31:47,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:47,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652914709] [2022-11-18 20:31:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:47,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:47,506 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 20:31:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:47,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652914709] [2022-11-18 20:31:47,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652914709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:47,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:47,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:47,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806108277] [2022-11-18 20:31:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:47,510 INFO L87 Difference]: Start difference. First operand 1190 states and 1829 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 20:31:47,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:47,797 INFO L93 Difference]: Finished difference Result 3298 states and 5071 transitions. [2022-11-18 20:31:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:47,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-11-18 20:31:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:47,805 INFO L225 Difference]: With dead ends: 3298 [2022-11-18 20:31:47,805 INFO L226 Difference]: Without dead ends: 2148 [2022-11-18 20:31:47,807 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 20:31:47,810 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 70 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:47,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 289 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-11-18 20:31:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2146. [2022-11-18 20:31:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 2145 states have (on average 1.5184149184149185) internal successors, (3257), 2145 states have internal predecessors, (3257), 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 20:31:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3257 transitions. [2022-11-18 20:31:48,107 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3257 transitions. Word has length 67 [2022-11-18 20:31:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:48,107 INFO L495 AbstractCegarLoop]: Abstraction has 2146 states and 3257 transitions. [2022-11-18 20:31:48,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 20:31:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3257 transitions. [2022-11-18 20:31:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:31:48,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:48,114 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] [2022-11-18 20:31:48,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:31:48,114 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 520699260, now seen corresponding path program 1 times [2022-11-18 20:31:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:48,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455958362] [2022-11-18 20:31:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:48,187 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 20:31:48,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:48,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455958362] [2022-11-18 20:31:48,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455958362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:48,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:48,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:48,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879116002] [2022-11-18 20:31:48,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:48,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:48,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:48,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:48,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:48,189 INFO L87 Difference]: Start difference. First operand 2146 states and 3257 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 20:31:48,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:48,694 INFO L93 Difference]: Finished difference Result 5974 states and 9019 transitions. [2022-11-18 20:31:48,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:48,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-11-18 20:31:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:48,708 INFO L225 Difference]: With dead ends: 5974 [2022-11-18 20:31:48,708 INFO L226 Difference]: Without dead ends: 3868 [2022-11-18 20:31:48,711 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 20:31:48,712 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 74 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:48,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:48,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2022-11-18 20:31:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3866. [2022-11-18 20:31:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 3865 states have (on average 1.4884864165588616) internal successors, (5753), 3865 states have internal predecessors, (5753), 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 20:31:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5753 transitions. [2022-11-18 20:31:49,222 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5753 transitions. Word has length 67 [2022-11-18 20:31:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:49,222 INFO L495 AbstractCegarLoop]: Abstraction has 3866 states and 5753 transitions. [2022-11-18 20:31:49,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 20:31:49,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5753 transitions. [2022-11-18 20:31:49,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:31:49,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:49,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:49,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:31:49,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:49,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:49,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1414914730, now seen corresponding path program 1 times [2022-11-18 20:31:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:49,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456859961] [2022-11-18 20:31:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:49,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456859961] [2022-11-18 20:31:49,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456859961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:49,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:49,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123185882] [2022-11-18 20:31:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:49,370 INFO L87 Difference]: Start difference. First operand 3866 states and 5753 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 20:31:49,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:49,774 INFO L93 Difference]: Finished difference Result 7694 states and 11467 transitions. [2022-11-18 20:31:49,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:49,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-11-18 20:31:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:49,788 INFO L225 Difference]: With dead ends: 7694 [2022-11-18 20:31:49,789 INFO L226 Difference]: Without dead ends: 3868 [2022-11-18 20:31:49,793 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 20:31:49,794 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 67 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:49,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 294 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:49,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2022-11-18 20:31:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3866. [2022-11-18 20:31:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 3865 states have (on average 1.4760672703751616) internal successors, (5705), 3865 states have internal predecessors, (5705), 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 20:31:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5705 transitions. [2022-11-18 20:31:50,277 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5705 transitions. Word has length 93 [2022-11-18 20:31:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:50,277 INFO L495 AbstractCegarLoop]: Abstraction has 3866 states and 5705 transitions. [2022-11-18 20:31:50,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 20:31:50,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5705 transitions. [2022-11-18 20:31:50,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:31:50,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:50,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:50,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:31:50,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:50,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash -70108759, now seen corresponding path program 1 times [2022-11-18 20:31:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:50,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922424882] [2022-11-18 20:31:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:50,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:50,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:50,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922424882] [2022-11-18 20:31:50,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922424882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:50,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:50,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:50,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027128548] [2022-11-18 20:31:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:50,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:50,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:50,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:50,456 INFO L87 Difference]: Start difference. First operand 3866 states and 5705 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 20:31:50,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:50,682 INFO L93 Difference]: Finished difference Result 5782 states and 8539 transitions. [2022-11-18 20:31:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:50,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-11-18 20:31:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:50,689 INFO L225 Difference]: With dead ends: 5782 [2022-11-18 20:31:50,690 INFO L226 Difference]: Without dead ends: 1956 [2022-11-18 20:31:50,693 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 20:31:50,694 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 61 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:50,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 275 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:50,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2022-11-18 20:31:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1954. [2022-11-18 20:31:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1953 states have (on average 1.4587813620071686) internal successors, (2849), 1953 states have internal predecessors, (2849), 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 20:31:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2849 transitions. [2022-11-18 20:31:50,929 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2849 transitions. Word has length 93 [2022-11-18 20:31:50,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:50,929 INFO L495 AbstractCegarLoop]: Abstraction has 1954 states and 2849 transitions. [2022-11-18 20:31:50,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 20:31:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2849 transitions. [2022-11-18 20:31:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:31:50,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:50,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:50,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:31:50,932 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:50,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:50,933 INFO L85 PathProgramCache]: Analyzing trace with hash 316139560, now seen corresponding path program 1 times [2022-11-18 20:31:50,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:50,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26782898] [2022-11-18 20:31:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:50,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:31:51,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:51,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26782898] [2022-11-18 20:31:51,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26782898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:51,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958511070] [2022-11-18 20:31:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:51,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:51,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:51,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:31:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:51,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:31:51,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:31:51,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:31:52,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958511070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:52,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:52,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-11-18 20:31:52,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461430218] [2022-11-18 20:31:52,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:52,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:31:52,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:31:52,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:31:52,025 INFO L87 Difference]: Start difference. First operand 1954 states and 2849 transitions. Second operand has 9 states, 9 states have (on average 26.77777777777778) internal successors, (241), 9 states have internal predecessors, (241), 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 20:31:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:52,874 INFO L93 Difference]: Finished difference Result 5962 states and 8799 transitions. [2022-11-18 20:31:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:31:52,875 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.77777777777778) internal successors, (241), 9 states have internal predecessors, (241), 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 93 [2022-11-18 20:31:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:52,888 INFO L225 Difference]: With dead ends: 5962 [2022-11-18 20:31:52,889 INFO L226 Difference]: Without dead ends: 4648 [2022-11-18 20:31:52,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:31:52,892 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 610 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:52,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 926 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:31:52,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2022-11-18 20:31:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 4370. [2022-11-18 20:31:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4369 states have (on average 1.4614328221560997) internal successors, (6385), 4369 states have internal predecessors, (6385), 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 20:31:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 6385 transitions. [2022-11-18 20:31:53,581 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 6385 transitions. Word has length 93 [2022-11-18 20:31:53,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:53,581 INFO L495 AbstractCegarLoop]: Abstraction has 4370 states and 6385 transitions. [2022-11-18 20:31:53,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.77777777777778) internal successors, (241), 9 states have internal predecessors, (241), 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 20:31:53,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 6385 transitions. [2022-11-18 20:31:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 20:31:53,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:53,585 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:53,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:53,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:53,792 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:53,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:53,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2140392051, now seen corresponding path program 1 times [2022-11-18 20:31:53,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:53,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969089964] [2022-11-18 20:31:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:53,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:31:54,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:54,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969089964] [2022-11-18 20:31:54,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969089964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:54,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:54,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:31:54,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181889572] [2022-11-18 20:31:54,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:54,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:31:54,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:31:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:31:54,040 INFO L87 Difference]: Start difference. First operand 4370 states and 6385 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 20:31:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:55,648 INFO L93 Difference]: Finished difference Result 15158 states and 22271 transitions. [2022-11-18 20:31:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:31:55,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 94 [2022-11-18 20:31:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:55,700 INFO L225 Difference]: With dead ends: 15158 [2022-11-18 20:31:55,700 INFO L226 Difference]: Without dead ends: 12908 [2022-11-18 20:31:55,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:31:55,706 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 863 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:55,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1047 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:31:55,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12908 states. [2022-11-18 20:31:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12908 to 6498. [2022-11-18 20:31:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6498 states, 6497 states have (on average 1.4592889025704172) internal successors, (9481), 6497 states have internal predecessors, (9481), 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 20:31:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6498 states to 6498 states and 9481 transitions. [2022-11-18 20:31:56,550 INFO L78 Accepts]: Start accepts. Automaton has 6498 states and 9481 transitions. Word has length 94 [2022-11-18 20:31:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:56,550 INFO L495 AbstractCegarLoop]: Abstraction has 6498 states and 9481 transitions. [2022-11-18 20:31:56,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 20:31:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6498 states and 9481 transitions. [2022-11-18 20:31:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 20:31:56,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:56,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:31:56,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -460132529, now seen corresponding path program 1 times [2022-11-18 20:31:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:56,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928614074] [2022-11-18 20:31:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:56,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:31:56,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:56,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928614074] [2022-11-18 20:31:56,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928614074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:56,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:56,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:31:56,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588894153] [2022-11-18 20:31:56,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:56,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:31:56,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:31:56,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:31:56,741 INFO L87 Difference]: Start difference. First operand 6498 states and 9481 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 20:31:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:58,585 INFO L93 Difference]: Finished difference Result 17286 states and 25367 transitions. [2022-11-18 20:31:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:31:58,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 94 [2022-11-18 20:31:58,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:58,617 INFO L225 Difference]: With dead ends: 17286 [2022-11-18 20:31:58,617 INFO L226 Difference]: Without dead ends: 15036 [2022-11-18 20:31:58,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:31:58,626 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 959 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:58,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 908 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:31:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15036 states. [2022-11-18 20:31:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15036 to 8626. [2022-11-18 20:31:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8626 states, 8625 states have (on average 1.4582028985507247) internal successors, (12577), 8625 states have internal predecessors, (12577), 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 20:31:59,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8626 states to 8626 states and 12577 transitions. [2022-11-18 20:31:59,760 INFO L78 Accepts]: Start accepts. Automaton has 8626 states and 12577 transitions. Word has length 94 [2022-11-18 20:31:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:59,761 INFO L495 AbstractCegarLoop]: Abstraction has 8626 states and 12577 transitions. [2022-11-18 20:31:59,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 20:31:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8626 states and 12577 transitions. [2022-11-18 20:31:59,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 20:31:59,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:59,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:59,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:31:59,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1629910483, now seen corresponding path program 1 times [2022-11-18 20:31:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:59,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381726390] [2022-11-18 20:31:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:31:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:59,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381726390] [2022-11-18 20:31:59,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381726390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:59,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:59,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:31:59,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110962354] [2022-11-18 20:31:59,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:59,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:31:59,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:59,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:31:59,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:31:59,947 INFO L87 Difference]: Start difference. First operand 8626 states and 12577 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 20:32:01,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:01,880 INFO L93 Difference]: Finished difference Result 19414 states and 28463 transitions. [2022-11-18 20:32:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:32:01,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 94 [2022-11-18 20:32:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:01,925 INFO L225 Difference]: With dead ends: 19414 [2022-11-18 20:32:01,925 INFO L226 Difference]: Without dead ends: 17164 [2022-11-18 20:32:01,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:32:01,932 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 909 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:01,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 984 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:32:01,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17164 states. [2022-11-18 20:32:02,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17164 to 10754. [2022-11-18 20:32:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10754 states, 10753 states have (on average 1.4575467311447967) internal successors, (15673), 10753 states have internal predecessors, (15673), 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 20:32:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 15673 transitions. [2022-11-18 20:32:03,066 INFO L78 Accepts]: Start accepts. Automaton has 10754 states and 15673 transitions. Word has length 94 [2022-11-18 20:32:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:03,066 INFO L495 AbstractCegarLoop]: Abstraction has 10754 states and 15673 transitions. [2022-11-18 20:32:03,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 20:32:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 10754 states and 15673 transitions. [2022-11-18 20:32:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 20:32:03,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:03,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:03,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:32:03,070 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:03,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash -485434863, now seen corresponding path program 1 times [2022-11-18 20:32:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:03,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932520753] [2022-11-18 20:32:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:32:03,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:03,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932520753] [2022-11-18 20:32:03,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932520753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:03,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:03,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:32:03,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145353624] [2022-11-18 20:32:03,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:03,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:32:03,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:03,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:32:03,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:32:03,261 INFO L87 Difference]: Start difference. First operand 10754 states and 15673 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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 20:32:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:05,061 INFO L93 Difference]: Finished difference Result 21542 states and 31559 transitions. [2022-11-18 20:32:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:32:05,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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 94 [2022-11-18 20:32:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:05,100 INFO L225 Difference]: With dead ends: 21542 [2022-11-18 20:32:05,100 INFO L226 Difference]: Without dead ends: 19292 [2022-11-18 20:32:05,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:32:05,106 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 795 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:05,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1116 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:32:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19292 states. [2022-11-18 20:32:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19292 to 12882. [2022-11-18 20:32:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12882 states, 12881 states have (on average 1.457107367440416) internal successors, (18769), 12881 states have internal predecessors, (18769), 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 20:32:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12882 states to 12882 states and 18769 transitions. [2022-11-18 20:32:06,484 INFO L78 Accepts]: Start accepts. Automaton has 12882 states and 18769 transitions. Word has length 94 [2022-11-18 20:32:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:06,485 INFO L495 AbstractCegarLoop]: Abstraction has 12882 states and 18769 transitions. [2022-11-18 20:32:06,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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 20:32:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 12882 states and 18769 transitions. [2022-11-18 20:32:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 20:32:06,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:06,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:06,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:32:06,489 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:06,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1162308652, now seen corresponding path program 1 times [2022-11-18 20:32:06,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:06,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879568935] [2022-11-18 20:32:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:06,685 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:32:06,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:06,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879568935] [2022-11-18 20:32:06,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879568935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:06,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:06,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:32:06,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171860257] [2022-11-18 20:32:06,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:06,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:32:06,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:32:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:32:06,690 INFO L87 Difference]: Start difference. First operand 12882 states and 18769 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 20:32:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:08,950 INFO L93 Difference]: Finished difference Result 22758 states and 33287 transitions. [2022-11-18 20:32:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:32:08,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 94 [2022-11-18 20:32:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:08,983 INFO L225 Difference]: With dead ends: 22758 [2022-11-18 20:32:08,983 INFO L226 Difference]: Without dead ends: 21100 [2022-11-18 20:32:08,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:32:08,991 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 863 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:08,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1179 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:32:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21100 states. [2022-11-18 20:32:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21100 to 14690. [2022-11-18 20:32:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14690 states, 14689 states have (on average 1.4558513173122745) internal successors, (21385), 14689 states have internal predecessors, (21385), 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 20:32:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14690 states to 14690 states and 21385 transitions. [2022-11-18 20:32:10,756 INFO L78 Accepts]: Start accepts. Automaton has 14690 states and 21385 transitions. Word has length 94 [2022-11-18 20:32:10,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:10,757 INFO L495 AbstractCegarLoop]: Abstraction has 14690 states and 21385 transitions. [2022-11-18 20:32:10,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 20:32:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 14690 states and 21385 transitions. [2022-11-18 20:32:10,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 20:32:10,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:10,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:10,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:32:10,769 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash -924615469, now seen corresponding path program 1 times [2022-11-18 20:32:10,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:10,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963183364] [2022-11-18 20:32:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:10,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:10,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:10,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963183364] [2022-11-18 20:32:10,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963183364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:10,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:10,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:10,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548582003] [2022-11-18 20:32:10,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:10,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:32:10,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:10,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:32:10,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:32:10,899 INFO L87 Difference]: Start difference. First operand 14690 states and 21385 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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) [2022-11-18 20:32:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:11,638 INFO L93 Difference]: Finished difference Result 20583 states and 29892 transitions. [2022-11-18 20:32:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:32:11,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 [2022-11-18 20:32:11,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:11,647 INFO L225 Difference]: With dead ends: 20583 [2022-11-18 20:32:11,647 INFO L226 Difference]: Without dead ends: 5933 [2022-11-18 20:32:11,658 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 20:32:11,658 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:11,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 271 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:32:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5933 states. [2022-11-18 20:32:12,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5933 to 5763. [2022-11-18 20:32:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5763 states, 5762 states have (on average 1.438562998958695) internal successors, (8289), 5762 states have internal predecessors, (8289), 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 20:32:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5763 states to 5763 states and 8289 transitions. [2022-11-18 20:32:12,460 INFO L78 Accepts]: Start accepts. Automaton has 5763 states and 8289 transitions. Word has length 97 [2022-11-18 20:32:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:12,461 INFO L495 AbstractCegarLoop]: Abstraction has 5763 states and 8289 transitions. [2022-11-18 20:32:12,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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) [2022-11-18 20:32:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5763 states and 8289 transitions. [2022-11-18 20:32:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 20:32:12,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:12,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:12,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:32:12,464 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:12,465 INFO L85 PathProgramCache]: Analyzing trace with hash -959048686, now seen corresponding path program 1 times [2022-11-18 20:32:12,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:12,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519514472] [2022-11-18 20:32:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:12,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:13,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:13,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519514472] [2022-11-18 20:32:13,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519514472] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:13,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87797069] [2022-11-18 20:32:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:13,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:13,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:13,099 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:13,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:32:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:32:13,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:14,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:15,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87797069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:15,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:15,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-11-18 20:32:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016277199] [2022-11-18 20:32:15,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:15,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:32:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:15,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:32:15,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:32:15,922 INFO L87 Difference]: Start difference. First operand 5763 states and 8289 transitions. Second operand has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 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 20:32:21,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:21,359 INFO L93 Difference]: Finished difference Result 31025 states and 43743 transitions. [2022-11-18 20:32:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:32:21,360 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 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 [2022-11-18 20:32:21,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:21,387 INFO L225 Difference]: With dead ends: 31025 [2022-11-18 20:32:21,387 INFO L226 Difference]: Without dead ends: 25951 [2022-11-18 20:32:21,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=402, Invalid=1080, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:32:21,397 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1861 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:21,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 1114 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:32:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25951 states. [2022-11-18 20:32:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25951 to 14256. [2022-11-18 20:32:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14256 states, 14255 states have (on average 1.4221676604700104) internal successors, (20273), 14255 states have internal predecessors, (20273), 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 20:32:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14256 states to 14256 states and 20273 transitions. [2022-11-18 20:32:23,177 INFO L78 Accepts]: Start accepts. Automaton has 14256 states and 20273 transitions. Word has length 97 [2022-11-18 20:32:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:23,177 INFO L495 AbstractCegarLoop]: Abstraction has 14256 states and 20273 transitions. [2022-11-18 20:32:23,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 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 20:32:23,178 INFO L276 IsEmpty]: Start isEmpty. Operand 14256 states and 20273 transitions. [2022-11-18 20:32:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 20:32:23,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:23,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:23,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:32:23,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:23,387 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:23,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1483713448, now seen corresponding path program 1 times [2022-11-18 20:32:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:23,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694337883] [2022-11-18 20:32:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:23,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:23,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:23,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694337883] [2022-11-18 20:32:23,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694337883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:23,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666292959] [2022-11-18 20:32:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:23,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:23,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:23,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:23,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bde2c-1501-491a-ab3b-534e06691d37/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:32:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:23,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:32:23,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:24,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:26,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666292959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:26,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:26,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-18 20:32:26,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28619309] [2022-11-18 20:32:26,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:26,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:32:26,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:26,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:32:26,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:32:26,097 INFO L87 Difference]: Start difference. First operand 14256 states and 20273 transitions. Second operand has 26 states, 26 states have (on average 10.115384615384615) internal successors, (263), 25 states have internal predecessors, (263), 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 20:33:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:37,469 INFO L93 Difference]: Finished difference Result 321284 states and 448296 transitions. [2022-11-18 20:33:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-11-18 20:33:37,470 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.115384615384615) internal successors, (263), 25 states have internal predecessors, (263), 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 [2022-11-18 20:33:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:38,230 INFO L225 Difference]: With dead ends: 321284 [2022-11-18 20:33:38,230 INFO L226 Difference]: Without dead ends: 308347 [2022-11-18 20:33:38,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21910 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=7464, Invalid=46592, Unknown=0, NotChecked=0, Total=54056 [2022-11-18 20:33:38,327 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 16572 mSDsluCounter, 3821 mSDsCounter, 0 mSdLazyCounter, 3945 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16572 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 4060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:38,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16572 Valid, 4219 Invalid, 4060 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 3945 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-18 20:33:38,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308347 states.