./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0 --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 820426658db97058309ccbf6c9080e1e23ba9878004c38e814dfcfedaf40875a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:54:40,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:54:40,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:54:40,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:54:40,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:54:40,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:54:40,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:54:40,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:54:40,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:54:40,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:54:40,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:54:40,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:54:40,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:54:40,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:54:40,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:54:40,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:54:40,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:54:40,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:54:40,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:54:40,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:54:40,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:54:40,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:54:40,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:54:40,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:54:40,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:54:40,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:54:40,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:54:40,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:54:40,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:54:40,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:54:40,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:54:40,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:54:40,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:54:40,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:54:40,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:54:40,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:54:40,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:54:40,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:54:40,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:54:40,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:54:40,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:54:40,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:54:40,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:54:40,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:54:40,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:54:40,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:54:40,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:54:40,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:54:40,205 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:54:40,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:54:40,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:54:40,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:54:40,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:54:40,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:54:40,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:54:40,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:54:40,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:54:40,208 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:54:40,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:54:40,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:54:40,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:54:40,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:54:40,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:54:40,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:54:40,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:54:40,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:54:40,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:54:40,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:54:40,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:54:40,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:54:40,211 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:54:40,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:54:40,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:54:40,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:54:40,211 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 820426658db97058309ccbf6c9080e1e23ba9878004c38e814dfcfedaf40875a [2021-11-22 14:54:40,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:54:40,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:54:40,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:54:40,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:54:40,485 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:54:40,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-22 14:54:40,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/data/e9131f3d6/b979ebca4a3442cb80c3e9ae0609dedf/FLAGc4ce36e2e [2021-11-22 14:54:41,273 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:54:41,274 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-22 14:54:41,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/data/e9131f3d6/b979ebca4a3442cb80c3e9ae0609dedf/FLAGc4ce36e2e [2021-11-22 14:54:41,382 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/data/e9131f3d6/b979ebca4a3442cb80c3e9ae0609dedf [2021-11-22 14:54:41,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:54:41,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:54:41,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:54:41,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:54:41,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:54:41,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:54:41" (1/1) ... [2021-11-22 14:54:41,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f3a0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:41, skipping insertion in model container [2021-11-22 14:54:41,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:54:41" (1/1) ... [2021-11-22 14:54:41,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:54:41,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:54:41,920 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11898,11911] [2021-11-22 14:54:41,962 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18616,18629] [2021-11-22 14:54:41,978 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20814,20827] [2021-11-22 14:54:41,987 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21891,21904] [2021-11-22 14:54:42,009 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25244,25257] [2021-11-22 14:54:42,021 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26324,26337] [2021-11-22 14:54:42,039 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28553,28566] [2021-11-22 14:54:42,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:54:42,614 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:54:42,682 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11898,11911] [2021-11-22 14:54:42,714 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18616,18629] [2021-11-22 14:54:42,723 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20814,20827] [2021-11-22 14:54:42,732 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21891,21904] [2021-11-22 14:54:42,744 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25244,25257] [2021-11-22 14:54:42,749 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26324,26337] [2021-11-22 14:54:42,757 WARN L230 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_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28553,28566] [2021-11-22 14:54:43,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:54:43,096 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:54:43,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43 WrapperNode [2021-11-22 14:54:43,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:54:43,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:54:43,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:54:43,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:54:43,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,398 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6525 [2021-11-22 14:54:43,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:54:43,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:54:43,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:54:43,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:54:43,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:54:43,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:54:43,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:54:43,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:54:43,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (1/1) ... [2021-11-22 14:54:43,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:54:43,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:54:43,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:54:43,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eea8d8d2-0f66-4c1c-a3d3-6812bd069832/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:54:43,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:54:43,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:54:43,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:54:43,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:54:44,084 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:54:44,090 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:54:46,671 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:54:46,699 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:54:46,700 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 14:54:46,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:54:46 BoogieIcfgContainer [2021-11-22 14:54:46,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:54:46,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:54:46,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:54:46,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:54:46,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:54:41" (1/3) ... [2021-11-22 14:54:46,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312b8623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:54:46, skipping insertion in model container [2021-11-22 14:54:46,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:54:43" (2/3) ... [2021-11-22 14:54:46,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312b8623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:54:46, skipping insertion in model container [2021-11-22 14:54:46,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:54:46" (3/3) ... [2021-11-22 14:54:46,713 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-22 14:54:46,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:54:46,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-22 14:54:46,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:54:46,797 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:54:46,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-22 14:54:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 1094 states have (on average 1.8875685557586837) internal successors, (2065), 1101 states have internal predecessors, (2065), 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) [2021-11-22 14:54:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 14:54:46,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:46,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:46,894 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1027637325, now seen corresponding path program 1 times [2021-11-22 14:54:46,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:46,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880846009] [2021-11-22 14:54:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:46,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:47,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:47,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880846009] [2021-11-22 14:54:47,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880846009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:47,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:47,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:54:47,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415747036] [2021-11-22 14:54:47,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:47,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:54:47,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:54:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:54:47,443 INFO L87 Difference]: Start difference. First operand has 1102 states, 1094 states have (on average 1.8875685557586837) internal successors, (2065), 1101 states have internal predecessors, (2065), 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 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2021-11-22 14:54:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:48,377 INFO L93 Difference]: Finished difference Result 1790 states and 3275 transitions. [2021-11-22 14:54:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:54:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2021-11-22 14:54:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:48,399 INFO L225 Difference]: With dead ends: 1790 [2021-11-22 14:54:48,399 INFO L226 Difference]: Without dead ends: 987 [2021-11-22 14:54:48,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:54:48,409 INFO L933 BasicCegarLoop]: 1062 mSDtfsCounter, 5040 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:48,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 1250 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:54:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-11-22 14:54:48,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 979. [2021-11-22 14:54:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 972 states have (on average 1.3477366255144032) internal successors, (1310), 978 states have internal predecessors, (1310), 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) [2021-11-22 14:54:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1310 transitions. [2021-11-22 14:54:48,508 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1310 transitions. Word has length 63 [2021-11-22 14:54:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:48,509 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1310 transitions. [2021-11-22 14:54:48,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2021-11-22 14:54:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1310 transitions. [2021-11-22 14:54:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:54:48,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:48,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:48,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:54:48,514 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash 517550277, now seen corresponding path program 1 times [2021-11-22 14:54:48,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:48,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70951079] [2021-11-22 14:54:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:48,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:48,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:48,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70951079] [2021-11-22 14:54:48,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70951079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:48,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:48,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:54:48,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831180968] [2021-11-22 14:54:48,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:48,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:54:48,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:48,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:54:48,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:48,680 INFO L87 Difference]: Start difference. First operand 979 states and 1310 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) [2021-11-22 14:54:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:48,769 INFO L93 Difference]: Finished difference Result 1722 states and 2352 transitions. [2021-11-22 14:54:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:54:48,771 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 [2021-11-22 14:54:48,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:48,782 INFO L225 Difference]: With dead ends: 1722 [2021-11-22 14:54:48,783 INFO L226 Difference]: Without dead ends: 1402 [2021-11-22 14:54:48,784 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:54:48,786 INFO L933 BasicCegarLoop]: 1422 mSDtfsCounter, 896 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:48,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 2136 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:54:48,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-11-22 14:54:48,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1393. [2021-11-22 14:54:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1386 states have (on average 1.3398268398268398) internal successors, (1857), 1392 states have internal predecessors, (1857), 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) [2021-11-22 14:54:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1857 transitions. [2021-11-22 14:54:48,871 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1857 transitions. Word has length 64 [2021-11-22 14:54:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:48,873 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1857 transitions. [2021-11-22 14:54:48,874 INFO L471 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) [2021-11-22 14:54:48,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1857 transitions. [2021-11-22 14:54:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:54:48,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:48,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:48,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:54:48,886 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1546123801, now seen corresponding path program 1 times [2021-11-22 14:54:48,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:48,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63736213] [2021-11-22 14:54:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:48,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:49,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:49,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63736213] [2021-11-22 14:54:49,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63736213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:49,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:49,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:54:49,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24632791] [2021-11-22 14:54:49,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:49,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:54:49,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:54:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:49,057 INFO L87 Difference]: Start difference. First operand 1393 states and 1857 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) [2021-11-22 14:54:49,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:49,238 INFO L93 Difference]: Finished difference Result 2185 states and 3029 transitions. [2021-11-22 14:54:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:54:49,239 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 [2021-11-22 14:54:49,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:49,251 INFO L225 Difference]: With dead ends: 2185 [2021-11-22 14:54:49,251 INFO L226 Difference]: Without dead ends: 1800 [2021-11-22 14:54:49,253 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:54:49,256 INFO L933 BasicCegarLoop]: 1156 mSDtfsCounter, 532 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:49,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 1864 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:54:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2021-11-22 14:54:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1792. [2021-11-22 14:54:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1785 states have (on average 1.3647058823529412) internal successors, (2436), 1791 states have internal predecessors, (2436), 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) [2021-11-22 14:54:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2436 transitions. [2021-11-22 14:54:49,344 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2436 transitions. Word has length 64 [2021-11-22 14:54:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:49,345 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2436 transitions. [2021-11-22 14:54:49,346 INFO L471 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) [2021-11-22 14:54:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2436 transitions. [2021-11-22 14:54:49,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:54:49,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:49,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:49,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:54:49,351 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1930220714, now seen corresponding path program 1 times [2021-11-22 14:54:49,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:49,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726693550] [2021-11-22 14:54:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:49,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:49,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:49,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726693550] [2021-11-22 14:54:49,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726693550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:49,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:49,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:54:49,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759054967] [2021-11-22 14:54:49,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:49,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:54:49,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:54:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:49,485 INFO L87 Difference]: Start difference. First operand 1792 states and 2436 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) [2021-11-22 14:54:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:49,619 INFO L93 Difference]: Finished difference Result 3258 states and 4588 transitions. [2021-11-22 14:54:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:54:49,619 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 [2021-11-22 14:54:49,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:49,633 INFO L225 Difference]: With dead ends: 3258 [2021-11-22 14:54:49,633 INFO L226 Difference]: Without dead ends: 2458 [2021-11-22 14:54:49,635 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:54:49,636 INFO L933 BasicCegarLoop]: 1081 mSDtfsCounter, 553 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:49,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 1797 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:54:49,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-11-22 14:54:49,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2450. [2021-11-22 14:54:49,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2443 states have (on average 1.3835448219402373) internal successors, (3380), 2449 states have internal predecessors, (3380), 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) [2021-11-22 14:54:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3380 transitions. [2021-11-22 14:54:49,753 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3380 transitions. Word has length 64 [2021-11-22 14:54:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:49,754 INFO L470 AbstractCegarLoop]: Abstraction has 2450 states and 3380 transitions. [2021-11-22 14:54:49,754 INFO L471 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) [2021-11-22 14:54:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3380 transitions. [2021-11-22 14:54:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:54:49,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:49,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:49,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:54:49,760 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:49,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:49,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1847708861, now seen corresponding path program 1 times [2021-11-22 14:54:49,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:49,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490644034] [2021-11-22 14:54:49,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:49,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:49,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:49,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490644034] [2021-11-22 14:54:49,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490644034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:49,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:49,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:54:49,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530839256] [2021-11-22 14:54:49,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:49,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:54:49,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:49,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:54:49,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:54:49,843 INFO L87 Difference]: Start difference. First operand 2450 states and 3380 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2021-11-22 14:54:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:50,580 INFO L93 Difference]: Finished difference Result 4663 states and 6528 transitions. [2021-11-22 14:54:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:54:50,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 [2021-11-22 14:54:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:50,596 INFO L225 Difference]: With dead ends: 4663 [2021-11-22 14:54:50,596 INFO L226 Difference]: Without dead ends: 2817 [2021-11-22 14:54:50,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:54:50,600 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 3030 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3030 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:50,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3030 Valid, 692 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 14:54:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-11-22 14:54:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2803. [2021-11-22 14:54:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2796 states have (on average 1.3776824034334765) internal successors, (3852), 2802 states have internal predecessors, (3852), 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) [2021-11-22 14:54:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3852 transitions. [2021-11-22 14:54:50,754 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3852 transitions. Word has length 64 [2021-11-22 14:54:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:50,754 INFO L470 AbstractCegarLoop]: Abstraction has 2803 states and 3852 transitions. [2021-11-22 14:54:50,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2021-11-22 14:54:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3852 transitions. [2021-11-22 14:54:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:54:50,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:50,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:50,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:54:50,760 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:50,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1685345629, now seen corresponding path program 1 times [2021-11-22 14:54:50,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:50,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445172924] [2021-11-22 14:54:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:50,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:50,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445172924] [2021-11-22 14:54:50,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445172924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:50,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:50,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:54:50,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688378977] [2021-11-22 14:54:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:50,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:54:50,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:54:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:54:50,838 INFO L87 Difference]: Start difference. First operand 2803 states and 3852 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2021-11-22 14:54:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:51,512 INFO L93 Difference]: Finished difference Result 6625 states and 9341 transitions. [2021-11-22 14:54:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:54:51,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 [2021-11-22 14:54:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:51,536 INFO L225 Difference]: With dead ends: 6625 [2021-11-22 14:54:51,536 INFO L226 Difference]: Without dead ends: 4111 [2021-11-22 14:54:51,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:54:51,541 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 2705 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:51,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2705 Valid, 644 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 14:54:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2021-11-22 14:54:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4103. [2021-11-22 14:54:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 4096 states have (on average 1.41162109375) internal successors, (5782), 4102 states have internal predecessors, (5782), 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) [2021-11-22 14:54:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5782 transitions. [2021-11-22 14:54:51,805 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5782 transitions. Word has length 64 [2021-11-22 14:54:51,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:51,805 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 5782 transitions. [2021-11-22 14:54:51,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2021-11-22 14:54:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5782 transitions. [2021-11-22 14:54:51,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 14:54:51,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:51,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:51,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:54:51,812 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:51,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:51,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1051430303, now seen corresponding path program 1 times [2021-11-22 14:54:51,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:51,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404068919] [2021-11-22 14:54:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:51,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:51,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:51,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404068919] [2021-11-22 14:54:51,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404068919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:51,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:51,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:54:51,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50685871] [2021-11-22 14:54:51,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:51,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:54:51,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:51,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:54:51,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:51,873 INFO L87 Difference]: Start difference. First operand 4103 states and 5782 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2021-11-22 14:54:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:52,254 INFO L93 Difference]: Finished difference Result 8762 states and 12471 transitions. [2021-11-22 14:54:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:54:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 [2021-11-22 14:54:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:52,289 INFO L225 Difference]: With dead ends: 8762 [2021-11-22 14:54:52,289 INFO L226 Difference]: Without dead ends: 5676 [2021-11-22 14:54:52,295 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:54:52,297 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 583 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:52,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 1523 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:54:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-11-22 14:54:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5650. [2021-11-22 14:54:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5650 states, 5643 states have (on average 1.3891547049441786) internal successors, (7839), 5649 states have internal predecessors, (7839), 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) [2021-11-22 14:54:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5650 states to 5650 states and 7839 transitions. [2021-11-22 14:54:52,715 INFO L78 Accepts]: Start accepts. Automaton has 5650 states and 7839 transitions. Word has length 65 [2021-11-22 14:54:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:52,716 INFO L470 AbstractCegarLoop]: Abstraction has 5650 states and 7839 transitions. [2021-11-22 14:54:52,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2021-11-22 14:54:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5650 states and 7839 transitions. [2021-11-22 14:54:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 14:54:52,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:52,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:52,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 14:54:52,726 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:52,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:52,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1899148000, now seen corresponding path program 1 times [2021-11-22 14:54:52,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:52,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162720424] [2021-11-22 14:54:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:52,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:52,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:52,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162720424] [2021-11-22 14:54:52,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162720424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:52,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:52,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:54:52,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604818986] [2021-11-22 14:54:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:52,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:54:52,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:54:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:54:52,840 INFO L87 Difference]: Start difference. First operand 5650 states and 7839 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2021-11-22 14:54:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:53,706 INFO L93 Difference]: Finished difference Result 12666 states and 17736 transitions. [2021-11-22 14:54:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:54:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 [2021-11-22 14:54:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:53,769 INFO L225 Difference]: With dead ends: 12666 [2021-11-22 14:54:53,769 INFO L226 Difference]: Without dead ends: 7452 [2021-11-22 14:54:53,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:54:53,779 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 2365 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2365 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:53,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2365 Valid, 577 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 14:54:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7452 states. [2021-11-22 14:54:54,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7452 to 7417. [2021-11-22 14:54:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7417 states, 7410 states have (on average 1.3913630229419702) internal successors, (10310), 7416 states have internal predecessors, (10310), 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) [2021-11-22 14:54:54,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7417 states to 7417 states and 10310 transitions. [2021-11-22 14:54:54,311 INFO L78 Accepts]: Start accepts. Automaton has 7417 states and 10310 transitions. Word has length 66 [2021-11-22 14:54:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:54,315 INFO L470 AbstractCegarLoop]: Abstraction has 7417 states and 10310 transitions. [2021-11-22 14:54:54,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2021-11-22 14:54:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 7417 states and 10310 transitions. [2021-11-22 14:54:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 14:54:54,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:54,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:54,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 14:54:54,327 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:54,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1449474395, now seen corresponding path program 1 times [2021-11-22 14:54:54,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:54,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930706406] [2021-11-22 14:54:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:54,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:54,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:54,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930706406] [2021-11-22 14:54:54,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930706406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:54,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:54,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:54:54,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39011418] [2021-11-22 14:54:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:54,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:54:54,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:54:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:54:54,454 INFO L87 Difference]: Start difference. First operand 7417 states and 10310 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-22 14:54:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:56,771 INFO L93 Difference]: Finished difference Result 25547 states and 36211 transitions. [2021-11-22 14:54:56,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 14:54:56,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 [2021-11-22 14:54:56,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:56,834 INFO L225 Difference]: With dead ends: 25547 [2021-11-22 14:54:56,835 INFO L226 Difference]: Without dead ends: 22002 [2021-11-22 14:54:56,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:54:56,852 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 4311 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4311 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:56,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4311 Valid, 1064 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:54:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22002 states. [2021-11-22 14:54:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22002 to 7445. [2021-11-22 14:54:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7445 states, 7438 states have (on average 1.3909653132562516) internal successors, (10346), 7444 states have internal predecessors, (10346), 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) [2021-11-22 14:54:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7445 states to 7445 states and 10346 transitions. [2021-11-22 14:54:57,757 INFO L78 Accepts]: Start accepts. Automaton has 7445 states and 10346 transitions. Word has length 67 [2021-11-22 14:54:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:57,757 INFO L470 AbstractCegarLoop]: Abstraction has 7445 states and 10346 transitions. [2021-11-22 14:54:57,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-22 14:54:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7445 states and 10346 transitions. [2021-11-22 14:54:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 14:54:57,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:57,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:57,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:54:57,767 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:54:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:57,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1861181409, now seen corresponding path program 1 times [2021-11-22 14:54:57,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:57,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37560541] [2021-11-22 14:54:57,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:57,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:57,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:57,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37560541] [2021-11-22 14:54:57,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37560541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:57,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:57,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:54:57,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247354815] [2021-11-22 14:54:57,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:57,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:54:57,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:57,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:54:57,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:54:57,880 INFO L87 Difference]: Start difference. First operand 7445 states and 10346 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-22 14:55:01,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:01,112 INFO L93 Difference]: Finished difference Result 28139 states and 40023 transitions. [2021-11-22 14:55:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 14:55:01,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 [2021-11-22 14:55:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:01,177 INFO L225 Difference]: With dead ends: 28139 [2021-11-22 14:55:01,177 INFO L226 Difference]: Without dead ends: 25042 [2021-11-22 14:55:01,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:55:01,190 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 3194 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3194 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:01,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3194 Valid, 1236 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 14:55:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25042 states. [2021-11-22 14:55:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25042 to 7516. [2021-11-22 14:55:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7516 states, 7509 states have (on average 1.390997469703023) internal successors, (10445), 7515 states have internal predecessors, (10445), 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) [2021-11-22 14:55:02,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7516 states to 7516 states and 10445 transitions. [2021-11-22 14:55:02,053 INFO L78 Accepts]: Start accepts. Automaton has 7516 states and 10445 transitions. Word has length 67 [2021-11-22 14:55:02,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:02,054 INFO L470 AbstractCegarLoop]: Abstraction has 7516 states and 10445 transitions. [2021-11-22 14:55:02,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-22 14:55:02,054 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states and 10445 transitions. [2021-11-22 14:55:02,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 14:55:02,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:02,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:02,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 14:55:02,064 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:02,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2008504829, now seen corresponding path program 1 times [2021-11-22 14:55:02,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:02,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181567520] [2021-11-22 14:55:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:02,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:02,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:02,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181567520] [2021-11-22 14:55:02,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181567520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:02,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:02,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:55:02,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8550604] [2021-11-22 14:55:02,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:02,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:55:02,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:55:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:55:02,157 INFO L87 Difference]: Start difference. First operand 7516 states and 10445 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-22 14:55:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:05,808 INFO L93 Difference]: Finished difference Result 36677 states and 52253 transitions. [2021-11-22 14:55:05,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 14:55:05,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 [2021-11-22 14:55:05,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:05,886 INFO L225 Difference]: With dead ends: 36677 [2021-11-22 14:55:05,886 INFO L226 Difference]: Without dead ends: 33134 [2021-11-22 14:55:05,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:55:05,903 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 4895 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:05,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4895 Valid, 1130 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 14:55:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33134 states. [2021-11-22 14:55:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33134 to 7584. [2021-11-22 14:55:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7584 states, 7577 states have (on average 1.3901280190048833) internal successors, (10533), 7583 states have internal predecessors, (10533), 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) [2021-11-22 14:55:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 10533 transitions. [2021-11-22 14:55:06,927 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 10533 transitions. Word has length 67 [2021-11-22 14:55:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:06,928 INFO L470 AbstractCegarLoop]: Abstraction has 7584 states and 10533 transitions. [2021-11-22 14:55:06,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-22 14:55:06,928 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 10533 transitions. [2021-11-22 14:55:06,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 14:55:06,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:06,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:06,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 14:55:06,939 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:06,939 INFO L85 PathProgramCache]: Analyzing trace with hash 296799215, now seen corresponding path program 1 times [2021-11-22 14:55:06,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:06,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482294169] [2021-11-22 14:55:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:06,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:07,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:07,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482294169] [2021-11-22 14:55:07,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482294169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:07,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:07,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:55:07,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227987483] [2021-11-22 14:55:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:07,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:55:07,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:55:07,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:55:07,035 INFO L87 Difference]: Start difference. First operand 7584 states and 10533 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-22 14:55:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:10,722 INFO L93 Difference]: Finished difference Result 32608 states and 46382 transitions. [2021-11-22 14:55:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 14:55:10,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 [2021-11-22 14:55:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:10,780 INFO L225 Difference]: With dead ends: 32608 [2021-11-22 14:55:10,780 INFO L226 Difference]: Without dead ends: 29247 [2021-11-22 14:55:10,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:55:10,791 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 4459 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:10,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4459 Valid, 1112 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:55:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29247 states. [2021-11-22 14:55:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29247 to 7713. [2021-11-22 14:55:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 7706 states have (on average 1.3890474954580847) internal successors, (10704), 7712 states have internal predecessors, (10704), 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) [2021-11-22 14:55:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 10704 transitions. [2021-11-22 14:55:11,741 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 10704 transitions. Word has length 67 [2021-11-22 14:55:11,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:11,741 INFO L470 AbstractCegarLoop]: Abstraction has 7713 states and 10704 transitions. [2021-11-22 14:55:11,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-22 14:55:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 10704 transitions. [2021-11-22 14:55:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 14:55:11,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:11,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:11,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 14:55:11,752 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:11,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash -766843701, now seen corresponding path program 1 times [2021-11-22 14:55:11,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:11,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503033693] [2021-11-22 14:55:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:11,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:11,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:11,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503033693] [2021-11-22 14:55:11,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503033693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:11,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:11,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 14:55:11,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931882671] [2021-11-22 14:55:11,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:11,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 14:55:11,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 14:55:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:55:11,894 INFO L87 Difference]: Start difference. First operand 7713 states and 10704 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 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) [2021-11-22 14:55:15,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:15,599 INFO L93 Difference]: Finished difference Result 24010 states and 34216 transitions. [2021-11-22 14:55:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 14:55:15,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 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 68 [2021-11-22 14:55:15,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:15,621 INFO L225 Difference]: With dead ends: 24010 [2021-11-22 14:55:15,622 INFO L226 Difference]: Without dead ends: 19371 [2021-11-22 14:55:15,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-22 14:55:15,632 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 2792 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2792 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:15,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2792 Valid, 2111 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 14:55:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19371 states. [2021-11-22 14:55:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19371 to 7704. [2021-11-22 14:55:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7704 states, 7697 states have (on average 1.3883331167987527) internal successors, (10686), 7703 states have internal predecessors, (10686), 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) [2021-11-22 14:55:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7704 states to 7704 states and 10686 transitions. [2021-11-22 14:55:16,473 INFO L78 Accepts]: Start accepts. Automaton has 7704 states and 10686 transitions. Word has length 68 [2021-11-22 14:55:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:16,473 INFO L470 AbstractCegarLoop]: Abstraction has 7704 states and 10686 transitions. [2021-11-22 14:55:16,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 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) [2021-11-22 14:55:16,474 INFO L276 IsEmpty]: Start isEmpty. Operand 7704 states and 10686 transitions. [2021-11-22 14:55:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 14:55:16,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:16,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:16,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 14:55:16,484 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -646757943, now seen corresponding path program 1 times [2021-11-22 14:55:16,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:16,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865782581] [2021-11-22 14:55:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:16,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:16,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:16,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865782581] [2021-11-22 14:55:16,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865782581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:16,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:16,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 14:55:16,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989513618] [2021-11-22 14:55:16,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:16,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 14:55:16,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 14:55:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:55:16,636 INFO L87 Difference]: Start difference. First operand 7704 states and 10686 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 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) [2021-11-22 14:55:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:19,921 INFO L93 Difference]: Finished difference Result 24156 states and 34433 transitions. [2021-11-22 14:55:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 14:55:19,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 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 68 [2021-11-22 14:55:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:19,946 INFO L225 Difference]: With dead ends: 24156 [2021-11-22 14:55:19,946 INFO L226 Difference]: Without dead ends: 19487 [2021-11-22 14:55:19,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-22 14:55:19,956 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 3796 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3796 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:19,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3796 Valid, 2006 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 14:55:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19487 states. [2021-11-22 14:55:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19487 to 7680. [2021-11-22 14:55:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7680 states, 7673 states have (on average 1.387592858073765) internal successors, (10647), 7679 states have internal predecessors, (10647), 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) [2021-11-22 14:55:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7680 states to 7680 states and 10647 transitions. [2021-11-22 14:55:20,953 INFO L78 Accepts]: Start accepts. Automaton has 7680 states and 10647 transitions. Word has length 68 [2021-11-22 14:55:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:20,953 INFO L470 AbstractCegarLoop]: Abstraction has 7680 states and 10647 transitions. [2021-11-22 14:55:20,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 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) [2021-11-22 14:55:20,954 INFO L276 IsEmpty]: Start isEmpty. Operand 7680 states and 10647 transitions. [2021-11-22 14:55:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 14:55:20,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:20,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:20,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 14:55:20,963 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash 850267752, now seen corresponding path program 1 times [2021-11-22 14:55:20,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:20,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993811786] [2021-11-22 14:55:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:20,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:21,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:21,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993811786] [2021-11-22 14:55:21,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993811786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:21,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:21,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:55:21,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592261690] [2021-11-22 14:55:21,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:21,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:55:21,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:21,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:55:21,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:55:21,048 INFO L87 Difference]: Start difference. First operand 7680 states and 10647 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-22 14:55:25,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:25,332 INFO L93 Difference]: Finished difference Result 28357 states and 40299 transitions. [2021-11-22 14:55:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 14:55:25,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 68 [2021-11-22 14:55:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:25,363 INFO L225 Difference]: With dead ends: 28357 [2021-11-22 14:55:25,363 INFO L226 Difference]: Without dead ends: 25260 [2021-11-22 14:55:25,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:55:25,372 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 3178 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:25,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3178 Valid, 1237 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:55:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25260 states. [2021-11-22 14:55:26,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25260 to 7749. [2021-11-22 14:55:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7749 states, 7742 states have (on average 1.3877551020408163) internal successors, (10744), 7748 states have internal predecessors, (10744), 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) [2021-11-22 14:55:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7749 states to 7749 states and 10744 transitions. [2021-11-22 14:55:26,299 INFO L78 Accepts]: Start accepts. Automaton has 7749 states and 10744 transitions. Word has length 68 [2021-11-22 14:55:26,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:26,300 INFO L470 AbstractCegarLoop]: Abstraction has 7749 states and 10744 transitions. [2021-11-22 14:55:26,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-22 14:55:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7749 states and 10744 transitions. [2021-11-22 14:55:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 14:55:26,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:26,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:26,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 14:55:26,309 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash -16939312, now seen corresponding path program 1 times [2021-11-22 14:55:26,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:26,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382443010] [2021-11-22 14:55:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:26,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:26,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:26,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382443010] [2021-11-22 14:55:26,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382443010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:26,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:26,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 14:55:26,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192027743] [2021-11-22 14:55:26,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:26,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 14:55:26,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:26,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 14:55:26,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:55:26,450 INFO L87 Difference]: Start difference. First operand 7749 states and 10744 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 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) [2021-11-22 14:55:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:30,008 INFO L93 Difference]: Finished difference Result 24313 states and 34645 transitions. [2021-11-22 14:55:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 14:55:30,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 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 68 [2021-11-22 14:55:30,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:30,033 INFO L225 Difference]: With dead ends: 24313 [2021-11-22 14:55:30,033 INFO L226 Difference]: Without dead ends: 19420 [2021-11-22 14:55:30,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-22 14:55:30,043 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 3420 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3420 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:30,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3420 Valid, 2409 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 14:55:30,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19420 states. [2021-11-22 14:55:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19420 to 7614. [2021-11-22 14:55:30,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7614 states, 7607 states have (on average 1.387537794136979) internal successors, (10555), 7613 states have internal predecessors, (10555), 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) [2021-11-22 14:55:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7614 states to 7614 states and 10555 transitions. [2021-11-22 14:55:31,133 INFO L78 Accepts]: Start accepts. Automaton has 7614 states and 10555 transitions. Word has length 68 [2021-11-22 14:55:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:31,133 INFO L470 AbstractCegarLoop]: Abstraction has 7614 states and 10555 transitions. [2021-11-22 14:55:31,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 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) [2021-11-22 14:55:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7614 states and 10555 transitions. [2021-11-22 14:55:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 14:55:31,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:31,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:31,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 14:55:31,141 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:31,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1623797592, now seen corresponding path program 1 times [2021-11-22 14:55:31,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:31,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385408489] [2021-11-22 14:55:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:31,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:31,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:31,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385408489] [2021-11-22 14:55:31,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385408489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:31,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:31,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:55:31,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424539543] [2021-11-22 14:55:31,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:31,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 14:55:31,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:31,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 14:55:31,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:55:31,275 INFO L87 Difference]: Start difference. First operand 7614 states and 10555 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 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) [2021-11-22 14:55:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:34,178 INFO L93 Difference]: Finished difference Result 20857 states and 29579 transitions. [2021-11-22 14:55:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 14:55:34,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 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 68 [2021-11-22 14:55:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:34,198 INFO L225 Difference]: With dead ends: 20857 [2021-11-22 14:55:34,199 INFO L226 Difference]: Without dead ends: 15464 [2021-11-22 14:55:34,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-11-22 14:55:34,209 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 3352 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:34,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3352 Valid, 1851 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:55:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15464 states. [2021-11-22 14:55:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15464 to 7287. [2021-11-22 14:55:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7287 states, 7280 states have (on average 1.3862637362637362) internal successors, (10092), 7286 states have internal predecessors, (10092), 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) [2021-11-22 14:55:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7287 states to 7287 states and 10092 transitions. [2021-11-22 14:55:35,296 INFO L78 Accepts]: Start accepts. Automaton has 7287 states and 10092 transitions. Word has length 68 [2021-11-22 14:55:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:35,296 INFO L470 AbstractCegarLoop]: Abstraction has 7287 states and 10092 transitions. [2021-11-22 14:55:35,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 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) [2021-11-22 14:55:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 7287 states and 10092 transitions. [2021-11-22 14:55:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 14:55:35,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:35,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:35,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 14:55:35,303 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash 601134174, now seen corresponding path program 1 times [2021-11-22 14:55:35,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:35,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192673511] [2021-11-22 14:55:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:35,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:35,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:35,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192673511] [2021-11-22 14:55:35,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192673511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:35,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:35,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 14:55:35,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195403607] [2021-11-22 14:55:35,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:35,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 14:55:35,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 14:55:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-22 14:55:35,644 INFO L87 Difference]: Start difference. First operand 7287 states and 10092 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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) [2021-11-22 14:55:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:41,914 INFO L93 Difference]: Finished difference Result 36644 states and 52526 transitions. [2021-11-22 14:55:41,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 14:55:41,914 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 69 [2021-11-22 14:55:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:41,957 INFO L225 Difference]: With dead ends: 36644 [2021-11-22 14:55:41,957 INFO L226 Difference]: Without dead ends: 31716 [2021-11-22 14:55:41,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2021-11-22 14:55:41,969 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 4622 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 4931 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:41,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4622 Valid, 4931 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 14:55:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31716 states. [2021-11-22 14:55:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31716 to 6954. [2021-11-22 14:55:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6954 states, 6949 states have (on average 1.3889768311987336) internal successors, (9652), 6953 states have internal predecessors, (9652), 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) [2021-11-22 14:55:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6954 states to 6954 states and 9652 transitions. [2021-11-22 14:55:43,474 INFO L78 Accepts]: Start accepts. Automaton has 6954 states and 9652 transitions. Word has length 69 [2021-11-22 14:55:43,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:43,475 INFO L470 AbstractCegarLoop]: Abstraction has 6954 states and 9652 transitions. [2021-11-22 14:55:43,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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) [2021-11-22 14:55:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 6954 states and 9652 transitions. [2021-11-22 14:55:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 14:55:43,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:43,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:43,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 14:55:43,480 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash -10442599, now seen corresponding path program 1 times [2021-11-22 14:55:43,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:43,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837380528] [2021-11-22 14:55:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:43,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:43,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:43,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837380528] [2021-11-22 14:55:43,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837380528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:43,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:43,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 14:55:43,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428788162] [2021-11-22 14:55:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:43,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 14:55:43,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 14:55:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-22 14:55:43,828 INFO L87 Difference]: Start difference. First operand 6954 states and 9652 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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) [2021-11-22 14:55:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:55:50,489 INFO L93 Difference]: Finished difference Result 35404 states and 50973 transitions. [2021-11-22 14:55:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 14:55:50,490 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 69 [2021-11-22 14:55:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:55:50,531 INFO L225 Difference]: With dead ends: 35404 [2021-11-22 14:55:50,532 INFO L226 Difference]: Without dead ends: 30700 [2021-11-22 14:55:50,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-22 14:55:50,544 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 4187 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4187 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:55:50,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4187 Valid, 3883 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 14:55:50,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30700 states. [2021-11-22 14:55:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30700 to 6869. [2021-11-22 14:55:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6869 states, 6865 states have (on average 1.3873270211216315) internal successors, (9524), 6868 states have internal predecessors, (9524), 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) [2021-11-22 14:55:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6869 states to 6869 states and 9524 transitions. [2021-11-22 14:55:51,913 INFO L78 Accepts]: Start accepts. Automaton has 6869 states and 9524 transitions. Word has length 69 [2021-11-22 14:55:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:55:51,913 INFO L470 AbstractCegarLoop]: Abstraction has 6869 states and 9524 transitions. [2021-11-22 14:55:51,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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) [2021-11-22 14:55:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 6869 states and 9524 transitions. [2021-11-22 14:55:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 14:55:51,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:55:51,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:55:51,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 14:55:51,918 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:55:51,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:55:51,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2099777066, now seen corresponding path program 1 times [2021-11-22 14:55:51,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:55:51,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726369840] [2021-11-22 14:55:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:55:51,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:55:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:55:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:55:52,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:55:52,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726369840] [2021-11-22 14:55:52,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726369840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:55:52,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:55:52,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 14:55:52,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189470172] [2021-11-22 14:55:52,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:55:52,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 14:55:52,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:55:52,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 14:55:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-22 14:55:52,202 INFO L87 Difference]: Start difference. First operand 6869 states and 9524 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2021-11-22 14:56:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:01,700 INFO L93 Difference]: Finished difference Result 43279 states and 62126 transitions. [2021-11-22 14:56:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 14:56:01,700 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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 69 [2021-11-22 14:56:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:01,755 INFO L225 Difference]: With dead ends: 43279 [2021-11-22 14:56:01,755 INFO L226 Difference]: Without dead ends: 38441 [2021-11-22 14:56:01,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2021-11-22 14:56:01,766 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 5384 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5384 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:01,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5384 Valid, 3127 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 14:56:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38441 states. [2021-11-22 14:56:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38441 to 6668. [2021-11-22 14:56:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6665 states have (on average 1.386496624156039) internal successors, (9241), 6667 states have internal predecessors, (9241), 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) [2021-11-22 14:56:03,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 9241 transitions. [2021-11-22 14:56:03,393 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 9241 transitions. Word has length 69 [2021-11-22 14:56:03,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:03,393 INFO L470 AbstractCegarLoop]: Abstraction has 6668 states and 9241 transitions. [2021-11-22 14:56:03,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2021-11-22 14:56:03,393 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 9241 transitions. [2021-11-22 14:56:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 14:56:03,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:03,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:03,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 14:56:03,397 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:56:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:03,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1218623503, now seen corresponding path program 1 times [2021-11-22 14:56:03,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:03,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861478852] [2021-11-22 14:56:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:03,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:03,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:03,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861478852] [2021-11-22 14:56:03,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861478852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:03,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:03,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 14:56:03,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242328749] [2021-11-22 14:56:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:03,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 14:56:03,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 14:56:03,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-22 14:56:03,775 INFO L87 Difference]: Start difference. First operand 6668 states and 9241 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 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) [2021-11-22 14:56:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:18,333 INFO L93 Difference]: Finished difference Result 52102 states and 75274 transitions. [2021-11-22 14:56:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-22 14:56:18,334 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 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 69 [2021-11-22 14:56:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:18,408 INFO L225 Difference]: With dead ends: 52102 [2021-11-22 14:56:18,409 INFO L226 Difference]: Without dead ends: 47469 [2021-11-22 14:56:18,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2021-11-22 14:56:18,424 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 4342 mSDsluCounter, 6817 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4342 SdHoareTripleChecker+Valid, 7491 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:18,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4342 Valid, 7491 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 14:56:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47469 states. [2021-11-22 14:56:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47469 to 6654. [2021-11-22 14:56:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6654 states, 6652 states have (on average 1.3854479855682502) internal successors, (9216), 6653 states have internal predecessors, (9216), 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) [2021-11-22 14:56:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6654 states to 6654 states and 9216 transitions. [2021-11-22 14:56:20,517 INFO L78 Accepts]: Start accepts. Automaton has 6654 states and 9216 transitions. Word has length 69 [2021-11-22 14:56:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:20,518 INFO L470 AbstractCegarLoop]: Abstraction has 6654 states and 9216 transitions. [2021-11-22 14:56:20,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 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) [2021-11-22 14:56:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 6654 states and 9216 transitions. [2021-11-22 14:56:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 14:56:20,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:20,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:20,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 14:56:20,525 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:56:20,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:20,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1394720726, now seen corresponding path program 1 times [2021-11-22 14:56:20,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:20,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575605799] [2021-11-22 14:56:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:20,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:20,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:20,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575605799] [2021-11-22 14:56:20,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575605799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:20,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:20,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:56:20,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674150893] [2021-11-22 14:56:20,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:20,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:56:20,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:20,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:56:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:56:20,585 INFO L87 Difference]: Start difference. First operand 6654 states and 9216 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-22 14:56:23,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:23,322 INFO L93 Difference]: Finished difference Result 13522 states and 18998 transitions. [2021-11-22 14:56:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:56:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-22 14:56:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:23,334 INFO L225 Difference]: With dead ends: 13522 [2021-11-22 14:56:23,334 INFO L226 Difference]: Without dead ends: 9444 [2021-11-22 14:56:23,337 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:56:23,338 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 379 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:23,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 523 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:56:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9444 states. [2021-11-22 14:56:25,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9444 to 9415. [2021-11-22 14:56:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9415 states, 9414 states have (on average 1.4108774166135543) internal successors, (13282), 9414 states have internal predecessors, (13282), 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) [2021-11-22 14:56:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9415 states to 9415 states and 13282 transitions. [2021-11-22 14:56:25,865 INFO L78 Accepts]: Start accepts. Automaton has 9415 states and 13282 transitions. Word has length 71 [2021-11-22 14:56:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:25,865 INFO L470 AbstractCegarLoop]: Abstraction has 9415 states and 13282 transitions. [2021-11-22 14:56:25,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-22 14:56:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9415 states and 13282 transitions. [2021-11-22 14:56:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 14:56:25,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:25,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:25,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 14:56:25,877 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:56:25,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:25,878 INFO L85 PathProgramCache]: Analyzing trace with hash -485578834, now seen corresponding path program 1 times [2021-11-22 14:56:25,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:25,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829360339] [2021-11-22 14:56:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:25,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:25,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:25,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829360339] [2021-11-22 14:56:25,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829360339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:25,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:25,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:56:25,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602692435] [2021-11-22 14:56:25,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:25,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:56:25,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:56:25,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:56:25,954 INFO L87 Difference]: Start difference. First operand 9415 states and 13282 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-22 14:56:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:39,896 INFO L93 Difference]: Finished difference Result 47360 states and 68772 transitions. [2021-11-22 14:56:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:56:39,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 84 [2021-11-22 14:56:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:39,957 INFO L225 Difference]: With dead ends: 47360 [2021-11-22 14:56:39,957 INFO L226 Difference]: Without dead ends: 39771 [2021-11-22 14:56:39,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:56:39,968 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 2038 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:39,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 1183 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:56:39,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39771 states. [2021-11-22 14:56:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39771 to 17002. [2021-11-22 14:56:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17002 states, 17001 states have (on average 1.4180930533498028) internal successors, (24109), 17001 states have internal predecessors, (24109), 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) [2021-11-22 14:56:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17002 states to 17002 states and 24109 transitions. [2021-11-22 14:56:45,357 INFO L78 Accepts]: Start accepts. Automaton has 17002 states and 24109 transitions. Word has length 84 [2021-11-22 14:56:45,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:45,358 INFO L470 AbstractCegarLoop]: Abstraction has 17002 states and 24109 transitions. [2021-11-22 14:56:45,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-22 14:56:45,358 INFO L276 IsEmpty]: Start isEmpty. Operand 17002 states and 24109 transitions. [2021-11-22 14:56:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-22 14:56:45,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:45,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:45,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 14:56:45,371 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:56:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1437916483, now seen corresponding path program 1 times [2021-11-22 14:56:45,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:45,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094643727] [2021-11-22 14:56:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:45,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:45,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:45,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094643727] [2021-11-22 14:56:45,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094643727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:45,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:45,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:56:45,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450379352] [2021-11-22 14:56:45,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:45,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:56:45,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:45,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:56:45,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:56:45,470 INFO L87 Difference]: Start difference. First operand 17002 states and 24109 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2021-11-22 14:56:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:52,503 INFO L93 Difference]: Finished difference Result 28820 states and 40852 transitions. [2021-11-22 14:56:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:56:52,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 85 [2021-11-22 14:56:52,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:52,543 INFO L225 Difference]: With dead ends: 28820 [2021-11-22 14:56:52,543 INFO L226 Difference]: Without dead ends: 19550 [2021-11-22 14:56:52,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:56:52,554 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 1001 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:52,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 1384 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:56:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19550 states. [2021-11-22 14:56:59,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19550 to 14426. [2021-11-22 14:56:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14426 states, 14425 states have (on average 1.3984055459272098) internal successors, (20172), 14425 states have internal predecessors, (20172), 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) [2021-11-22 14:56:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14426 states to 14426 states and 20172 transitions. [2021-11-22 14:56:59,410 INFO L78 Accepts]: Start accepts. Automaton has 14426 states and 20172 transitions. Word has length 85 [2021-11-22 14:56:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:59,410 INFO L470 AbstractCegarLoop]: Abstraction has 14426 states and 20172 transitions. [2021-11-22 14:56:59,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2021-11-22 14:56:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14426 states and 20172 transitions. [2021-11-22 14:56:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 14:56:59,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:59,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:59,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 14:56:59,424 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:56:59,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1391083626, now seen corresponding path program 1 times [2021-11-22 14:56:59,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:59,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240385322] [2021-11-22 14:56:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:59,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:59,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:59,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240385322] [2021-11-22 14:56:59,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240385322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:59,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:59,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:56:59,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393200332] [2021-11-22 14:56:59,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:59,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:56:59,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:59,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:56:59,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:56:59,493 INFO L87 Difference]: Start difference. First operand 14426 states and 20172 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2021-11-22 14:57:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:03,989 INFO L93 Difference]: Finished difference Result 21716 states and 30418 transitions. [2021-11-22 14:57:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:57:03,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 86 [2021-11-22 14:57:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:04,007 INFO L225 Difference]: With dead ends: 21716 [2021-11-22 14:57:04,008 INFO L226 Difference]: Without dead ends: 12940 [2021-11-22 14:57:04,017 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:57:04,018 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 250 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:04,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 937 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12940 states. [2021-11-22 14:57:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12940 to 12938. [2021-11-22 14:57:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12938 states, 12937 states have (on average 1.3847105202133416) internal successors, (17914), 12937 states have internal predecessors, (17914), 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) [2021-11-22 14:57:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12938 states to 12938 states and 17914 transitions. [2021-11-22 14:57:08,277 INFO L78 Accepts]: Start accepts. Automaton has 12938 states and 17914 transitions. Word has length 86 [2021-11-22 14:57:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:08,277 INFO L470 AbstractCegarLoop]: Abstraction has 12938 states and 17914 transitions. [2021-11-22 14:57:08,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2021-11-22 14:57:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 12938 states and 17914 transitions. [2021-11-22 14:57:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 14:57:08,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:08,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:08,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 14:57:08,287 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:57:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:08,287 INFO L85 PathProgramCache]: Analyzing trace with hash -214737700, now seen corresponding path program 1 times [2021-11-22 14:57:08,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:08,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216769446] [2021-11-22 14:57:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:08,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:08,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:08,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216769446] [2021-11-22 14:57:08,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216769446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:08,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:08,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:57:08,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356374994] [2021-11-22 14:57:08,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:08,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:57:08,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:08,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:57:08,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:57:08,347 INFO L87 Difference]: Start difference. First operand 12938 states and 17914 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2021-11-22 14:57:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:18,465 INFO L93 Difference]: Finished difference Result 34794 states and 48696 transitions. [2021-11-22 14:57:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:57:18,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 86 [2021-11-22 14:57:18,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:18,497 INFO L225 Difference]: With dead ends: 34794 [2021-11-22 14:57:18,498 INFO L226 Difference]: Without dead ends: 23516 [2021-11-22 14:57:18,511 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:57:18,512 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 142 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:18,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 856 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23516 states. [2021-11-22 14:57:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23516 to 22082. [2021-11-22 14:57:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22082 states, 22081 states have (on average 1.38580680222816) internal successors, (30600), 22081 states have internal predecessors, (30600), 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) [2021-11-22 14:57:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22082 states to 22082 states and 30600 transitions. [2021-11-22 14:57:26,167 INFO L78 Accepts]: Start accepts. Automaton has 22082 states and 30600 transitions. Word has length 86 [2021-11-22 14:57:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:26,167 INFO L470 AbstractCegarLoop]: Abstraction has 22082 states and 30600 transitions. [2021-11-22 14:57:26,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2021-11-22 14:57:26,168 INFO L276 IsEmpty]: Start isEmpty. Operand 22082 states and 30600 transitions. [2021-11-22 14:57:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-22 14:57:26,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:26,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:26,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 14:57:26,178 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:57:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash 181438720, now seen corresponding path program 1 times [2021-11-22 14:57:26,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:26,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613581263] [2021-11-22 14:57:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:26,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:26,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:26,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613581263] [2021-11-22 14:57:26,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613581263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:26,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:26,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:57:26,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867435452] [2021-11-22 14:57:26,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:26,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:57:26,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:57:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:57:26,238 INFO L87 Difference]: Start difference. First operand 22082 states and 30600 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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) [2021-11-22 14:57:32,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:32,499 INFO L93 Difference]: Finished difference Result 30609 states and 42473 transitions. [2021-11-22 14:57:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:57:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2021-11-22 14:57:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:32,522 INFO L225 Difference]: With dead ends: 30609 [2021-11-22 14:57:32,522 INFO L226 Difference]: Without dead ends: 18076 [2021-11-22 14:57:32,531 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:57:32,532 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 241 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:32,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 938 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18076 states. [2021-11-22 14:57:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18076 to 18074. [2021-11-22 14:57:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18074 states, 18073 states have (on average 1.3756432246998285) internal successors, (24862), 18073 states have internal predecessors, (24862), 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) [2021-11-22 14:57:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18074 states to 18074 states and 24862 transitions. [2021-11-22 14:57:38,894 INFO L78 Accepts]: Start accepts. Automaton has 18074 states and 24862 transitions. Word has length 87 [2021-11-22 14:57:38,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:38,895 INFO L470 AbstractCegarLoop]: Abstraction has 18074 states and 24862 transitions. [2021-11-22 14:57:38,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-22 14:57:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 18074 states and 24862 transitions. [2021-11-22 14:57:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-22 14:57:38,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:38,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:38,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 14:57:38,905 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:57:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1393258625, now seen corresponding path program 1 times [2021-11-22 14:57:38,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:38,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315272561] [2021-11-22 14:57:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:38,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:38,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:38,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315272561] [2021-11-22 14:57:38,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315272561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:38,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:38,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:57:38,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441358572] [2021-11-22 14:57:38,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:38,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:57:38,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:38,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:57:38,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:57:38,964 INFO L87 Difference]: Start difference. First operand 18074 states and 24862 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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) [2021-11-22 14:57:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:50,740 INFO L93 Difference]: Finished difference Result 49898 states and 69036 transitions. [2021-11-22 14:57:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:57:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2021-11-22 14:57:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:50,783 INFO L225 Difference]: With dead ends: 49898 [2021-11-22 14:57:50,783 INFO L226 Difference]: Without dead ends: 33436 [2021-11-22 14:57:50,795 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:57:50,796 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 129 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:50,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 838 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33436 states. [2021-11-22 14:58:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33436 to 31218. [2021-11-22 14:58:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31218 states, 31217 states have (on average 1.3693179998077971) internal successors, (42746), 31217 states have internal predecessors, (42746), 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) [2021-11-22 14:58:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31218 states to 31218 states and 42746 transitions. [2021-11-22 14:58:01,820 INFO L78 Accepts]: Start accepts. Automaton has 31218 states and 42746 transitions. Word has length 87 [2021-11-22 14:58:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:01,821 INFO L470 AbstractCegarLoop]: Abstraction has 31218 states and 42746 transitions. [2021-11-22 14:58:01,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-22 14:58:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 31218 states and 42746 transitions. [2021-11-22 14:58:01,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 14:58:01,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:01,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:01,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 14:58:01,828 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:58:01,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:01,829 INFO L85 PathProgramCache]: Analyzing trace with hash -746388302, now seen corresponding path program 1 times [2021-11-22 14:58:01,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:01,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301184808] [2021-11-22 14:58:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:01,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:01,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:01,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301184808] [2021-11-22 14:58:01,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301184808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:01,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:01,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:58:01,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536434519] [2021-11-22 14:58:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:01,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:58:01,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:58:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:58:01,885 INFO L87 Difference]: Start difference. First operand 31218 states and 42746 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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) [2021-11-22 14:58:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:10,447 INFO L93 Difference]: Finished difference Result 38182 states and 52354 transitions. [2021-11-22 14:58:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:58:10,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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 88 [2021-11-22 14:58:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:10,483 INFO L225 Difference]: With dead ends: 38182 [2021-11-22 14:58:10,483 INFO L226 Difference]: Without dead ends: 25577 [2021-11-22 14:58:10,492 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:58:10,493 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 198 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:10,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 882 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:58:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25577 states. [2021-11-22 14:58:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25577 to 25575. [2021-11-22 14:58:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25575 states, 25574 states have (on average 1.3667787596777978) internal successors, (34954), 25574 states have internal predecessors, (34954), 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) [2021-11-22 14:58:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25575 states to 25575 states and 34954 transitions. [2021-11-22 14:58:19,312 INFO L78 Accepts]: Start accepts. Automaton has 25575 states and 34954 transitions. Word has length 88 [2021-11-22 14:58:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:19,312 INFO L470 AbstractCegarLoop]: Abstraction has 25575 states and 34954 transitions. [2021-11-22 14:58:19,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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) [2021-11-22 14:58:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 25575 states and 34954 transitions. [2021-11-22 14:58:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-22 14:58:19,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:19,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:19,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 14:58:19,320 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:58:19,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:19,320 INFO L85 PathProgramCache]: Analyzing trace with hash -384451911, now seen corresponding path program 1 times [2021-11-22 14:58:19,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:19,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177284612] [2021-11-22 14:58:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:19,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:19,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:19,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177284612] [2021-11-22 14:58:19,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177284612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:19,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:19,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:58:19,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365885483] [2021-11-22 14:58:19,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:19,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:58:19,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:19,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:58:19,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:58:19,379 INFO L87 Difference]: Start difference. First operand 25575 states and 34954 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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) [2021-11-22 14:58:35,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:35,308 INFO L93 Difference]: Finished difference Result 70747 states and 96892 transitions. [2021-11-22 14:58:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:58:35,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 89 [2021-11-22 14:58:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:35,380 INFO L225 Difference]: With dead ends: 70747 [2021-11-22 14:58:35,380 INFO L226 Difference]: Without dead ends: 46721 [2021-11-22 14:58:35,397 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:58:35,398 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 151 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:35,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 877 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:58:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46721 states. [2021-11-22 14:58:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46721 to 43295. [2021-11-22 14:58:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43295 states, 43294 states have (on average 1.3587564096641567) internal successors, (58826), 43294 states have internal predecessors, (58826), 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) [2021-11-22 14:58:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43295 states to 43295 states and 58826 transitions. [2021-11-22 14:58:50,731 INFO L78 Accepts]: Start accepts. Automaton has 43295 states and 58826 transitions. Word has length 89 [2021-11-22 14:58:50,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:50,731 INFO L470 AbstractCegarLoop]: Abstraction has 43295 states and 58826 transitions. [2021-11-22 14:58:50,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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) [2021-11-22 14:58:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand 43295 states and 58826 transitions. [2021-11-22 14:58:50,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-22 14:58:50,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:50,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:50,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 14:58:50,737 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 14:58:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2033472567, now seen corresponding path program 1 times [2021-11-22 14:58:50,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:50,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473305353] [2021-11-22 14:58:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:50,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:50,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:50,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473305353] [2021-11-22 14:58:50,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473305353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:50,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:50,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:58:50,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840718605] [2021-11-22 14:58:50,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:50,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:58:50,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:58:50,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:58:50,797 INFO L87 Difference]: Start difference. First operand 43295 states and 58826 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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) [2021-11-22 14:59:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:59:19,805 INFO L93 Difference]: Finished difference Result 123107 states and 167276 transitions. [2021-11-22 14:59:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:59:19,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 89 [2021-11-22 14:59:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:59:19,956 INFO L225 Difference]: With dead ends: 123107 [2021-11-22 14:59:19,956 INFO L226 Difference]: Without dead ends: 81361 [2021-11-22 14:59:19,991 INFO L932 BasicCegarLoop]: 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 [2021-11-22 14:59:19,991 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 107 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:59:19,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 831 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:59:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81361 states.