./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4edad7c083448b81b05575191757512095bfff0f094103ddb1a592d0cd702494 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:57:31,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:57:31,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:57:31,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:57:31,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:57:31,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:57:31,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:57:31,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:57:31,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:57:31,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:57:31,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:57:31,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:57:31,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:57:31,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:57:31,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:57:31,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:57:31,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:57:31,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:57:31,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:57:31,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:57:31,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:57:31,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:57:31,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:57:31,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:57:31,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:57:31,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:57:31,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:57:31,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:57:31,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:57:31,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:57:31,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:57:31,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:57:31,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:57:31,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:57:31,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:57:31,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:57:31,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:57:31,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:57:31,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:57:31,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:57:31,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:57:31,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:57:31,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:57:31,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:57:31,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:57:31,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:57:31,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:57:31,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:57:31,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:57:31,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:57:31,642 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:57:31,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:57:31,642 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:57:31,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:57:31,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:57:31,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:57:31,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:57:31,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:57:31,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:57:31,644 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:57:31,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:57:31,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:57:31,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:57:31,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:57:31,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:57:31,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:57:31,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:57:31,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:57:31,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:57:31,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:57:31,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:57:31,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:57:31,646 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:57:31,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:57:31,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:57:31,647 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_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4edad7c083448b81b05575191757512095bfff0f094103ddb1a592d0cd702494 [2022-11-20 11:57:31,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:57:31,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:57:31,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:57:31,905 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:57:31,906 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:57:31,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/systemc/transmitter.03.cil.c [2022-11-20 11:57:35,051 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:57:35,282 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:57:35,283 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/sv-benchmarks/c/systemc/transmitter.03.cil.c [2022-11-20 11:57:35,292 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/data/d94d5d570/b468cb1b03044e22936d10eda200bdba/FLAG26fff08f6 [2022-11-20 11:57:35,308 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/data/d94d5d570/b468cb1b03044e22936d10eda200bdba [2022-11-20 11:57:35,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:57:35,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:57:35,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:57:35,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:57:35,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:57:35,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12fe3be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35, skipping insertion in model container [2022-11-20 11:57:35,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:57:35,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:57:35,518 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/sv-benchmarks/c/systemc/transmitter.03.cil.c[706,719] [2022-11-20 11:57:35,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:57:35,611 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:57:35,624 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/sv-benchmarks/c/systemc/transmitter.03.cil.c[706,719] [2022-11-20 11:57:35,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:57:35,686 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:57:35,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35 WrapperNode [2022-11-20 11:57:35,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:57:35,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:57:35,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:57:35,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:57:35,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,768 INFO L138 Inliner]: procedures = 34, calls = 39, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 321 [2022-11-20 11:57:35,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:57:35,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:57:35,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:57:35,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:57:35,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,807 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:57:35,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:57:35,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:57:35,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:57:35,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (1/1) ... [2022-11-20 11:57:35,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:57:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:35,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:57:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:57:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 11:57:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 11:57:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 11:57:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 11:57:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 11:57:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 11:57:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 11:57:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 11:57:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 11:57:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 11:57:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:57:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 11:57:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 11:57:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:57:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:57:35,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:57:36,004 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:57:36,007 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:57:36,508 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:57:36,517 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:57:36,517 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-20 11:57:36,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:57:36 BoogieIcfgContainer [2022-11-20 11:57:36,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:57:36,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:57:36,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:57:36,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:57:36,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:57:35" (1/3) ... [2022-11-20 11:57:36,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542a024d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:57:36, skipping insertion in model container [2022-11-20 11:57:36,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:35" (2/3) ... [2022-11-20 11:57:36,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542a024d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:57:36, skipping insertion in model container [2022-11-20 11:57:36,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:57:36" (3/3) ... [2022-11-20 11:57:36,538 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.03.cil.c [2022-11-20 11:57:36,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:57:36,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:57:36,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:57:36,653 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e625381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:57:36,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:57:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 129 states have (on average 1.5891472868217054) internal successors, (205), 131 states have internal predecessors, (205), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 11:57:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:36,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:36,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:36,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:36,695 INFO L85 PathProgramCache]: Analyzing trace with hash 377890557, now seen corresponding path program 1 times [2022-11-20 11:57:36,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:36,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388392045] [2022-11-20 11:57:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:36,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:37,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:37,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:37,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:37,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:37,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388392045] [2022-11-20 11:57:37,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388392045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:37,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:37,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:57:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231937146] [2022-11-20 11:57:37,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:37,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:57:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:57:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:57:37,345 INFO L87 Difference]: Start difference. First operand has 153 states, 129 states have (on average 1.5891472868217054) internal successors, (205), 131 states have internal predecessors, (205), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:38,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:38,770 INFO L93 Difference]: Finished difference Result 516 states and 818 transitions. [2022-11-20 11:57:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:57:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:38,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:38,785 INFO L225 Difference]: With dead ends: 516 [2022-11-20 11:57:38,785 INFO L226 Difference]: Without dead ends: 366 [2022-11-20 11:57:38,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:57:38,793 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 511 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:38,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 551 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:57:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-20 11:57:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 284. [2022-11-20 11:57:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 243 states have (on average 1.48559670781893) internal successors, (361), 245 states have internal predecessors, (361), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-11-20 11:57:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 418 transitions. [2022-11-20 11:57:38,908 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 418 transitions. Word has length 79 [2022-11-20 11:57:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:38,908 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 418 transitions. [2022-11-20 11:57:38,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 418 transitions. [2022-11-20 11:57:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:38,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:38,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:38,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:57:38,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash -76002114, now seen corresponding path program 1 times [2022-11-20 11:57:38,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:38,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549477290] [2022-11-20 11:57:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:39,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:39,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:39,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:39,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:39,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:39,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:39,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549477290] [2022-11-20 11:57:39,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549477290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:39,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:39,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:39,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088850073] [2022-11-20 11:57:39,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:39,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:39,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:39,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:39,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:39,227 INFO L87 Difference]: Start difference. First operand 284 states and 418 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:40,715 INFO L93 Difference]: Finished difference Result 871 states and 1299 transitions. [2022-11-20 11:57:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:57:40,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:40,724 INFO L225 Difference]: With dead ends: 871 [2022-11-20 11:57:40,725 INFO L226 Difference]: Without dead ends: 598 [2022-11-20 11:57:40,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:57:40,739 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 544 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:40,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 937 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:57:40,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-20 11:57:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 413. [2022-11-20 11:57:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 354 states have (on average 1.4774011299435028) internal successors, (523), 357 states have internal predecessors, (523), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-11-20 11:57:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 604 transitions. [2022-11-20 11:57:40,833 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 604 transitions. Word has length 79 [2022-11-20 11:57:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:40,834 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 604 transitions. [2022-11-20 11:57:40,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 604 transitions. [2022-11-20 11:57:40,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:40,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:40,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:40,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:57:40,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash -130395012, now seen corresponding path program 1 times [2022-11-20 11:57:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:40,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823514393] [2022-11-20 11:57:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:40,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:40,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:41,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:41,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823514393] [2022-11-20 11:57:41,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823514393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:41,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:41,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986813045] [2022-11-20 11:57:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:41,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:41,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:41,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:41,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:41,042 INFO L87 Difference]: Start difference. First operand 413 states and 604 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:42,699 INFO L93 Difference]: Finished difference Result 1334 states and 1979 transitions. [2022-11-20 11:57:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:57:42,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:42,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:42,705 INFO L225 Difference]: With dead ends: 1334 [2022-11-20 11:57:42,705 INFO L226 Difference]: Without dead ends: 932 [2022-11-20 11:57:42,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:57:42,708 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 539 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:42,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 935 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:57:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-11-20 11:57:42,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 674. [2022-11-20 11:57:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 579 states have (on average 1.471502590673575) internal successors, (852), 584 states have internal predecessors, (852), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-11-20 11:57:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 985 transitions. [2022-11-20 11:57:42,776 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 985 transitions. Word has length 79 [2022-11-20 11:57:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:42,776 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 985 transitions. [2022-11-20 11:57:42,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 985 transitions. [2022-11-20 11:57:42,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:42,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:42,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:42,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:57:42,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -547791618, now seen corresponding path program 1 times [2022-11-20 11:57:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:42,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875453593] [2022-11-20 11:57:42,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:42,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:42,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:42,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:42,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:42,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:42,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:42,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875453593] [2022-11-20 11:57:42,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875453593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:42,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:42,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454058213] [2022-11-20 11:57:42,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:42,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:42,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:42,975 INFO L87 Difference]: Start difference. First operand 674 states and 985 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:44,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:44,746 INFO L93 Difference]: Finished difference Result 2399 states and 3538 transitions. [2022-11-20 11:57:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:57:44,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:44,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:44,758 INFO L225 Difference]: With dead ends: 2399 [2022-11-20 11:57:44,759 INFO L226 Difference]: Without dead ends: 1736 [2022-11-20 11:57:44,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:57:44,773 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 561 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:44,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 925 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:57:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2022-11-20 11:57:44,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1183. [2022-11-20 11:57:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1020 states have (on average 1.4725490196078432) internal successors, (1502), 1029 states have internal predecessors, (1502), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-11-20 11:57:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1737 transitions. [2022-11-20 11:57:44,919 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1737 transitions. Word has length 79 [2022-11-20 11:57:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:44,920 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1737 transitions. [2022-11-20 11:57:44,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:44,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1737 transitions. [2022-11-20 11:57:44,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:44,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:44,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:44,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:57:44,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:44,925 INFO L85 PathProgramCache]: Analyzing trace with hash 131480636, now seen corresponding path program 1 times [2022-11-20 11:57:44,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:44,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85940501] [2022-11-20 11:57:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:44,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:45,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:45,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85940501] [2022-11-20 11:57:45,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85940501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:45,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:45,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:45,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869963334] [2022-11-20 11:57:45,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:45,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:45,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:45,073 INFO L87 Difference]: Start difference. First operand 1183 states and 1737 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:46,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:46,704 INFO L93 Difference]: Finished difference Result 4210 states and 6212 transitions. [2022-11-20 11:57:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:57:46,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:46,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:46,720 INFO L225 Difference]: With dead ends: 4210 [2022-11-20 11:57:46,721 INFO L226 Difference]: Without dead ends: 3038 [2022-11-20 11:57:46,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:57:46,726 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 594 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:46,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 925 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:57:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2022-11-20 11:57:46,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2200. [2022-11-20 11:57:46,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1905 states have (on average 1.4740157480314962) internal successors, (2808), 1922 states have internal predecessors, (2808), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-20 11:57:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3257 transitions. [2022-11-20 11:57:46,950 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3257 transitions. Word has length 79 [2022-11-20 11:57:46,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:46,951 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 3257 transitions. [2022-11-20 11:57:46,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3257 transitions. [2022-11-20 11:57:46,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:46,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:46,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:46,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:57:46,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:46,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:46,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2093055294, now seen corresponding path program 1 times [2022-11-20 11:57:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:46,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458517605] [2022-11-20 11:57:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:47,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:47,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:47,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:47,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:47,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458517605] [2022-11-20 11:57:47,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458517605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:47,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:47,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:47,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120707491] [2022-11-20 11:57:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:47,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:47,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:47,070 INFO L87 Difference]: Start difference. First operand 2200 states and 3257 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:47,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:47,869 INFO L93 Difference]: Finished difference Result 4935 states and 7382 transitions. [2022-11-20 11:57:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:57:47,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:47,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:47,886 INFO L225 Difference]: With dead ends: 4935 [2022-11-20 11:57:47,886 INFO L226 Difference]: Without dead ends: 2746 [2022-11-20 11:57:47,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:57:47,894 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 436 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:47,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 384 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:57:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-11-20 11:57:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2200. [2022-11-20 11:57:48,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1905 states have (on average 1.4650918635170604) internal successors, (2791), 1922 states have internal predecessors, (2791), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-20 11:57:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3240 transitions. [2022-11-20 11:57:48,147 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3240 transitions. Word has length 79 [2022-11-20 11:57:48,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:48,147 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 3240 transitions. [2022-11-20 11:57:48,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3240 transitions. [2022-11-20 11:57:48,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:48,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:48,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:48,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:57:48,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2000088068, now seen corresponding path program 1 times [2022-11-20 11:57:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:48,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97249600] [2022-11-20 11:57:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:48,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:48,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:48,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:48,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97249600] [2022-11-20 11:57:48,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97249600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:48,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:48,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608422089] [2022-11-20 11:57:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:48,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:48,351 INFO L87 Difference]: Start difference. First operand 2200 states and 3240 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:49,661 INFO L93 Difference]: Finished difference Result 4844 states and 7190 transitions. [2022-11-20 11:57:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:57:49,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:49,679 INFO L225 Difference]: With dead ends: 4844 [2022-11-20 11:57:49,679 INFO L226 Difference]: Without dead ends: 2656 [2022-11-20 11:57:49,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:57:49,689 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 354 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:49,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 644 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:57:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2022-11-20 11:57:49,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2203. [2022-11-20 11:57:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1908 states have (on average 1.4559748427672956) internal successors, (2778), 1925 states have internal predecessors, (2778), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-20 11:57:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3227 transitions. [2022-11-20 11:57:49,987 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3227 transitions. Word has length 79 [2022-11-20 11:57:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:49,988 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3227 transitions. [2022-11-20 11:57:49,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3227 transitions. [2022-11-20 11:57:49,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:49,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:49,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:49,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:57:49,992 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:49,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash 266293118, now seen corresponding path program 1 times [2022-11-20 11:57:49,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:49,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391614509] [2022-11-20 11:57:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:49,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:50,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:50,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:50,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391614509] [2022-11-20 11:57:50,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391614509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:50,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:50,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557084636] [2022-11-20 11:57:50,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:50,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:50,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:50,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:50,144 INFO L87 Difference]: Start difference. First operand 2203 states and 3227 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:51,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:51,388 INFO L93 Difference]: Finished difference Result 5438 states and 8009 transitions. [2022-11-20 11:57:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:57:51,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:51,406 INFO L225 Difference]: With dead ends: 5438 [2022-11-20 11:57:51,406 INFO L226 Difference]: Without dead ends: 3247 [2022-11-20 11:57:51,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:57:51,415 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 354 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:51,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 641 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:57:51,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-11-20 11:57:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 2254. [2022-11-20 11:57:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1959 states have (on average 1.444104134762634) internal successors, (2829), 1976 states have internal predecessors, (2829), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-20 11:57:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3278 transitions. [2022-11-20 11:57:51,688 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3278 transitions. Word has length 79 [2022-11-20 11:57:51,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:51,688 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 3278 transitions. [2022-11-20 11:57:51,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3278 transitions. [2022-11-20 11:57:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:51,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:51,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:51,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:57:51,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1159779456, now seen corresponding path program 1 times [2022-11-20 11:57:51,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:51,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215870698] [2022-11-20 11:57:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:51,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:51,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:51,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:51,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:51,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:51,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215870698] [2022-11-20 11:57:51,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215870698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:51,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:51,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869234499] [2022-11-20 11:57:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:51,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:51,854 INFO L87 Difference]: Start difference. First operand 2254 states and 3278 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:54,428 INFO L93 Difference]: Finished difference Result 10055 states and 14924 transitions. [2022-11-20 11:57:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:57:54,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:54,477 INFO L225 Difference]: With dead ends: 10055 [2022-11-20 11:57:54,477 INFO L226 Difference]: Without dead ends: 7813 [2022-11-20 11:57:54,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:57:54,493 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1427 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:54,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 797 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:57:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-11-20 11:57:55,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 6425. [2022-11-20 11:57:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6425 states, 5567 states have (on average 1.445841566373271) internal successors, (8049), 5634 states have internal predecessors, (8049), 501 states have call successors, (501), 308 states have call predecessors, (501), 356 states have return successors, (835), 498 states have call predecessors, (835), 501 states have call successors, (835) [2022-11-20 11:57:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 9385 transitions. [2022-11-20 11:57:55,494 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 9385 transitions. Word has length 79 [2022-11-20 11:57:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:55,494 INFO L495 AbstractCegarLoop]: Abstraction has 6425 states and 9385 transitions. [2022-11-20 11:57:55,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:55,495 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 9385 transitions. [2022-11-20 11:57:55,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:55,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:55,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:55,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:57:55,501 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:55,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:55,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1236657535, now seen corresponding path program 1 times [2022-11-20 11:57:55,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:55,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652088981] [2022-11-20 11:57:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:55,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:55,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:55,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652088981] [2022-11-20 11:57:55,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652088981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:55,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:55,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:55,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62262995] [2022-11-20 11:57:55,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:55,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:55,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:55,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:55,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:55,696 INFO L87 Difference]: Start difference. First operand 6425 states and 9385 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:57,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:57,697 INFO L93 Difference]: Finished difference Result 14892 states and 22145 transitions. [2022-11-20 11:57:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:57:57,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:57:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:57,748 INFO L225 Difference]: With dead ends: 14892 [2022-11-20 11:57:57,754 INFO L226 Difference]: Without dead ends: 8479 [2022-11-20 11:57:57,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:57:57,774 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 315 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:57,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 641 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:57:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8479 states. [2022-11-20 11:57:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8479 to 6503. [2022-11-20 11:57:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 5645 states have (on average 1.4350752878653676) internal successors, (8101), 5712 states have internal predecessors, (8101), 501 states have call successors, (501), 308 states have call predecessors, (501), 356 states have return successors, (835), 498 states have call predecessors, (835), 501 states have call successors, (835) [2022-11-20 11:57:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 9437 transitions. [2022-11-20 11:57:58,897 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 9437 transitions. Word has length 79 [2022-11-20 11:57:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:58,902 INFO L495 AbstractCegarLoop]: Abstraction has 6503 states and 9437 transitions. [2022-11-20 11:57:58,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:57:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 9437 transitions. [2022-11-20 11:57:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:57:58,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:58,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:58,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:57:58,923 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:58,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1212942595, now seen corresponding path program 1 times [2022-11-20 11:57:58,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:58,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282556930] [2022-11-20 11:57:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:58,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:57:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:59,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:57:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:57:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:59,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:59,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282556930] [2022-11-20 11:57:59,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282556930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:59,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:59,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:59,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338801715] [2022-11-20 11:57:59,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:59,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:59,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:59,149 INFO L87 Difference]: Start difference. First operand 6503 states and 9437 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:02,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:02,717 INFO L93 Difference]: Finished difference Result 21917 states and 32003 transitions. [2022-11-20 11:58:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:58:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-20 11:58:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:02,775 INFO L225 Difference]: With dead ends: 21917 [2022-11-20 11:58:02,775 INFO L226 Difference]: Without dead ends: 15426 [2022-11-20 11:58:02,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:58:02,798 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1318 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:02,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 788 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:58:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15426 states. [2022-11-20 11:58:04,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15426 to 12725. [2022-11-20 11:58:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 11005 states have (on average 1.4299863698318946) internal successors, (15737), 11156 states have internal predecessors, (15737), 1007 states have call successors, (1007), 616 states have call predecessors, (1007), 712 states have return successors, (1768), 968 states have call predecessors, (1768), 1007 states have call successors, (1768) [2022-11-20 11:58:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 18512 transitions. [2022-11-20 11:58:04,824 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 18512 transitions. Word has length 79 [2022-11-20 11:58:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:04,824 INFO L495 AbstractCegarLoop]: Abstraction has 12725 states and 18512 transitions. [2022-11-20 11:58:04,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 18512 transitions. [2022-11-20 11:58:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 11:58:04,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:04,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:04,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:58:04,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:04,837 INFO L85 PathProgramCache]: Analyzing trace with hash -823536340, now seen corresponding path program 1 times [2022-11-20 11:58:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:04,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735268238] [2022-11-20 11:58:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:04,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:58:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:58:04,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:04,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735268238] [2022-11-20 11:58:04,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735268238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:04,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:04,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:58:04,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510259117] [2022-11-20 11:58:04,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:04,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:58:04,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:04,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:58:04,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:58:04,978 INFO L87 Difference]: Start difference. First operand 12725 states and 18512 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:07,505 INFO L93 Difference]: Finished difference Result 28548 states and 42518 transitions. [2022-11-20 11:58:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:58:07,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-20 11:58:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:07,571 INFO L225 Difference]: With dead ends: 28548 [2022-11-20 11:58:07,572 INFO L226 Difference]: Without dead ends: 15835 [2022-11-20 11:58:07,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:58:07,598 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 222 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:07,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 636 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:58:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15835 states. [2022-11-20 11:58:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15835 to 12881. [2022-11-20 11:58:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12881 states, 11161 states have (on average 1.4193172654780037) internal successors, (15841), 11312 states have internal predecessors, (15841), 1007 states have call successors, (1007), 616 states have call predecessors, (1007), 712 states have return successors, (1768), 968 states have call predecessors, (1768), 1007 states have call successors, (1768) [2022-11-20 11:58:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12881 states to 12881 states and 18616 transitions. [2022-11-20 11:58:09,442 INFO L78 Accepts]: Start accepts. Automaton has 12881 states and 18616 transitions. Word has length 97 [2022-11-20 11:58:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:09,443 INFO L495 AbstractCegarLoop]: Abstraction has 12881 states and 18616 transitions. [2022-11-20 11:58:09,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 12881 states and 18616 transitions. [2022-11-20 11:58:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 11:58:09,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:09,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:09,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:58:09,456 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:09,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1442844846, now seen corresponding path program 1 times [2022-11-20 11:58:09,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:09,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351539941] [2022-11-20 11:58:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:09,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:58:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:58:09,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:09,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351539941] [2022-11-20 11:58:09,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351539941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:09,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:09,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:58:09,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087675645] [2022-11-20 11:58:09,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:58:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:58:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:58:09,667 INFO L87 Difference]: Start difference. First operand 12881 states and 18616 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:15,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:15,046 INFO L93 Difference]: Finished difference Result 43294 states and 62971 transitions. [2022-11-20 11:58:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:58:15,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-20 11:58:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:15,278 INFO L225 Difference]: With dead ends: 43294 [2022-11-20 11:58:15,279 INFO L226 Difference]: Without dead ends: 30426 [2022-11-20 11:58:15,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:58:15,311 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 720 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:15,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 724 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:58:15,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30426 states. [2022-11-20 11:58:17,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30426 to 24791. [2022-11-20 11:58:17,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24791 states, 21405 states have (on average 1.4053258584442887) internal successors, (30081), 21788 states have internal predecessors, (30081), 1921 states have call successors, (1921), 1184 states have call predecessors, (1921), 1464 states have return successors, (3566), 1850 states have call predecessors, (3566), 1921 states have call successors, (3566) [2022-11-20 11:58:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24791 states to 24791 states and 35568 transitions. [2022-11-20 11:58:17,882 INFO L78 Accepts]: Start accepts. Automaton has 24791 states and 35568 transitions. Word has length 97 [2022-11-20 11:58:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:17,882 INFO L495 AbstractCegarLoop]: Abstraction has 24791 states and 35568 transitions. [2022-11-20 11:58:17,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 24791 states and 35568 transitions. [2022-11-20 11:58:17,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 11:58:17,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:17,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:17,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:58:17,908 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:17,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:17,909 INFO L85 PathProgramCache]: Analyzing trace with hash -923849748, now seen corresponding path program 1 times [2022-11-20 11:58:17,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:17,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128826436] [2022-11-20 11:58:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:17,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:58:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:58:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:18,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128826436] [2022-11-20 11:58:18,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128826436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:18,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:18,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:58:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112251120] [2022-11-20 11:58:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:18,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:58:18,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:18,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:58:18,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:58:18,101 INFO L87 Difference]: Start difference. First operand 24791 states and 35568 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:22,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:22,213 INFO L93 Difference]: Finished difference Result 30360 states and 43543 transitions. [2022-11-20 11:58:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:58:22,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-20 11:58:22,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:22,303 INFO L225 Difference]: With dead ends: 30360 [2022-11-20 11:58:22,304 INFO L226 Difference]: Without dead ends: 17020 [2022-11-20 11:58:22,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:58:22,345 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 735 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:22,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 721 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:58:22,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17020 states. [2022-11-20 11:58:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17020 to 13265. [2022-11-20 11:58:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13265 states, 11442 states have (on average 1.3800034958923266) internal successors, (15790), 11633 states have internal predecessors, (15790), 1048 states have call successors, (1048), 640 states have call predecessors, (1048), 774 states have return successors, (1724), 1007 states have call predecessors, (1724), 1048 states have call successors, (1724) [2022-11-20 11:58:24,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13265 states to 13265 states and 18562 transitions. [2022-11-20 11:58:24,847 INFO L78 Accepts]: Start accepts. Automaton has 13265 states and 18562 transitions. Word has length 97 [2022-11-20 11:58:24,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:24,847 INFO L495 AbstractCegarLoop]: Abstraction has 13265 states and 18562 transitions. [2022-11-20 11:58:24,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 13265 states and 18562 transitions. [2022-11-20 11:58:24,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 11:58:24,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:24,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:24,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:58:24,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:24,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:24,865 INFO L85 PathProgramCache]: Analyzing trace with hash -30363410, now seen corresponding path program 1 times [2022-11-20 11:58:24,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:24,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845083690] [2022-11-20 11:58:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:24,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:58:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:58:25,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:25,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845083690] [2022-11-20 11:58:25,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845083690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:25,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:25,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:58:25,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456524136] [2022-11-20 11:58:25,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:25,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:58:25,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:25,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:58:25,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:58:25,104 INFO L87 Difference]: Start difference. First operand 13265 states and 18562 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:28,076 INFO L93 Difference]: Finished difference Result 16782 states and 23535 transitions. [2022-11-20 11:58:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:58:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-20 11:58:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:28,108 INFO L225 Difference]: With dead ends: 16782 [2022-11-20 11:58:28,109 INFO L226 Difference]: Without dead ends: 9172 [2022-11-20 11:58:28,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:58:28,128 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 727 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:28,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 724 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:58:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9172 states. [2022-11-20 11:58:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9172 to 7349. [2022-11-20 11:58:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7349 states, 6338 states have (on average 1.3628905017355633) internal successors, (8638), 6433 states have internal predecessors, (8638), 592 states have call successors, (592), 356 states have call predecessors, (592), 418 states have return successors, (890), 567 states have call predecessors, (890), 592 states have call successors, (890) [2022-11-20 11:58:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7349 states to 7349 states and 10120 transitions. [2022-11-20 11:58:29,033 INFO L78 Accepts]: Start accepts. Automaton has 7349 states and 10120 transitions. Word has length 97 [2022-11-20 11:58:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:29,034 INFO L495 AbstractCegarLoop]: Abstraction has 7349 states and 10120 transitions. [2022-11-20 11:58:29,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 7349 states and 10120 transitions. [2022-11-20 11:58:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 11:58:29,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:29,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:29,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:58:29,040 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:29,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:29,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2079751252, now seen corresponding path program 1 times [2022-11-20 11:58:29,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:29,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538764651] [2022-11-20 11:58:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:29,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:58:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:58:29,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:29,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538764651] [2022-11-20 11:58:29,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538764651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:29,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:29,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:58:29,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380751289] [2022-11-20 11:58:29,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:58:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:29,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:58:29,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:58:29,251 INFO L87 Difference]: Start difference. First operand 7349 states and 10120 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:32,231 INFO L93 Difference]: Finished difference Result 14511 states and 19925 transitions. [2022-11-20 11:58:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:58:32,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-20 11:58:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:32,267 INFO L225 Difference]: With dead ends: 14511 [2022-11-20 11:58:32,268 INFO L226 Difference]: Without dead ends: 8997 [2022-11-20 11:58:32,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:58:32,284 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 717 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:32,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 725 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:58:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2022-11-20 11:58:33,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 5444. [2022-11-20 11:58:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 4731 states have (on average 1.3472838723314309) internal successors, (6374), 4790 states have internal predecessors, (6374), 418 states have call successors, (418), 260 states have call predecessors, (418), 294 states have return successors, (552), 397 states have call predecessors, (552), 418 states have call successors, (552) [2022-11-20 11:58:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 7344 transitions. [2022-11-20 11:58:33,175 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 7344 transitions. Word has length 97 [2022-11-20 11:58:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:33,175 INFO L495 AbstractCegarLoop]: Abstraction has 5444 states and 7344 transitions. [2022-11-20 11:58:33,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 7344 transitions. [2022-11-20 11:58:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 11:58:33,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:33,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:33,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:58:33,180 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:33,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1317822766, now seen corresponding path program 1 times [2022-11-20 11:58:33,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:33,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430126361] [2022-11-20 11:58:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:33,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:33,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:33,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:33,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:58:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:58:33,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:33,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430126361] [2022-11-20 11:58:33,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430126361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:33,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:33,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:58:33,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077822304] [2022-11-20 11:58:33,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:33,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:58:33,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:33,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:58:33,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:58:33,361 INFO L87 Difference]: Start difference. First operand 5444 states and 7344 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:35,997 INFO L93 Difference]: Finished difference Result 11742 states and 15872 transitions. [2022-11-20 11:58:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:58:35,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-20 11:58:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:36,028 INFO L225 Difference]: With dead ends: 11742 [2022-11-20 11:58:36,028 INFO L226 Difference]: Without dead ends: 7441 [2022-11-20 11:58:36,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:58:36,041 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 945 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:36,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 628 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 11:58:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2022-11-20 11:58:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 5365. [2022-11-20 11:58:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 4666 states have (on average 1.342477496785255) internal successors, (6264), 4711 states have internal predecessors, (6264), 418 states have call successors, (418), 260 states have call predecessors, (418), 280 states have return successors, (522), 395 states have call predecessors, (522), 418 states have call successors, (522) [2022-11-20 11:58:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7204 transitions. [2022-11-20 11:58:36,776 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7204 transitions. Word has length 97 [2022-11-20 11:58:36,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:36,776 INFO L495 AbstractCegarLoop]: Abstraction has 5365 states and 7204 transitions. [2022-11-20 11:58:36,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7204 transitions. [2022-11-20 11:58:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 11:58:36,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:36,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:36,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:58:36,780 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1565969260, now seen corresponding path program 1 times [2022-11-20 11:58:36,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:36,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908873301] [2022-11-20 11:58:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:36,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:36,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:36,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:36,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:36,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:36,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:58:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:58:36,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:36,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908873301] [2022-11-20 11:58:36,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908873301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:36,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:36,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:58:36,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411618277] [2022-11-20 11:58:36,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:36,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:58:36,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:36,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:58:36,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:58:36,934 INFO L87 Difference]: Start difference. First operand 5365 states and 7204 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:39,067 INFO L93 Difference]: Finished difference Result 13848 states and 18568 transitions. [2022-11-20 11:58:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:58:39,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-20 11:58:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:39,094 INFO L225 Difference]: With dead ends: 13848 [2022-11-20 11:58:39,094 INFO L226 Difference]: Without dead ends: 8498 [2022-11-20 11:58:39,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:58:39,106 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 697 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:39,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 393 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:58:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2022-11-20 11:58:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 6336. [2022-11-20 11:58:40,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 5571 states have (on average 1.3055106803087417) internal successors, (7273), 5622 states have internal predecessors, (7273), 434 states have call successors, (434), 298 states have call predecessors, (434), 330 states have return successors, (598), 417 states have call predecessors, (598), 434 states have call successors, (598) [2022-11-20 11:58:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 8305 transitions. [2022-11-20 11:58:40,370 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 8305 transitions. Word has length 97 [2022-11-20 11:58:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:40,370 INFO L495 AbstractCegarLoop]: Abstraction has 6336 states and 8305 transitions. [2022-11-20 11:58:40,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:58:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 8305 transitions. [2022-11-20 11:58:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 11:58:40,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:40,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:40,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:58:40,373 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:40,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1989615982, now seen corresponding path program 1 times [2022-11-20 11:58:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:40,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548194635] [2022-11-20 11:58:40,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:58:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:58:40,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:40,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548194635] [2022-11-20 11:58:40,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548194635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:58:40,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379638556] [2022-11-20 11:58:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:40,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:58:40,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:58:40,486 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:58:40,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:58:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:58:40,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:58:40,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:40,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:58:40,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379638556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:40,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:58:40,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-20 11:58:40,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946812824] [2022-11-20 11:58:40,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:40,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:58:40,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:40,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:58:40,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:58:40,706 INFO L87 Difference]: Start difference. First operand 6336 states and 8305 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:58:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:42,548 INFO L93 Difference]: Finished difference Result 17959 states and 23682 transitions. [2022-11-20 11:58:42,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:58:42,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 97 [2022-11-20 11:58:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:42,590 INFO L225 Difference]: With dead ends: 17959 [2022-11-20 11:58:42,590 INFO L226 Difference]: Without dead ends: 11638 [2022-11-20 11:58:42,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:58:42,609 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 174 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 594 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 [2022-11-20 11:58:42,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 594 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:58:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11638 states. [2022-11-20 11:58:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11638 to 11638. [2022-11-20 11:58:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11638 states, 10216 states have (on average 1.293265465935787) internal successors, (13212), 10309 states have internal predecessors, (13212), 806 states have call successors, (806), 554 states have call predecessors, (806), 615 states have return successors, (1185), 778 states have call predecessors, (1185), 806 states have call successors, (1185) [2022-11-20 11:58:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11638 states to 11638 states and 15203 transitions. [2022-11-20 11:58:44,491 INFO L78 Accepts]: Start accepts. Automaton has 11638 states and 15203 transitions. Word has length 97 [2022-11-20 11:58:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:44,491 INFO L495 AbstractCegarLoop]: Abstraction has 11638 states and 15203 transitions. [2022-11-20 11:58:44,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:58:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 11638 states and 15203 transitions. [2022-11-20 11:58:44,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 11:58:44,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:44,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:44,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:58:44,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74749358-478d-4132-99af-e77fadfc8893/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:58:44,703 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:44,703 INFO L85 PathProgramCache]: Analyzing trace with hash -487614150, now seen corresponding path program 1 times [2022-11-20 11:58:44,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:44,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418726718] [2022-11-20 11:58:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:44,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:44,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:44,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:44,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:58:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:44,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 11:58:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 11:58:45,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:45,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418726718] [2022-11-20 11:58:45,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418726718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:45,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:45,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:58:45,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494075503] [2022-11-20 11:58:45,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:45,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:58:45,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:45,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:58:45,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:58:45,012 INFO L87 Difference]: Start difference. First operand 11638 states and 15203 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:58:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:50,589 INFO L93 Difference]: Finished difference Result 40822 states and 53504 transitions. [2022-11-20 11:58:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:58:50,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 117 [2022-11-20 11:58:50,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:50,681 INFO L225 Difference]: With dead ends: 40822 [2022-11-20 11:58:50,682 INFO L226 Difference]: Without dead ends: 29205 [2022-11-20 11:58:50,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:58:50,716 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 861 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:50,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 567 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:58:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29205 states. [2022-11-20 11:58:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29205 to 25930. [2022-11-20 11:58:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25930 states, 22816 states have (on average 1.267093267882188) internal successors, (28910), 23200 states have internal predecessors, (28910), 1541 states have call successors, (1541), 1086 states have call predecessors, (1541), 1572 states have return successors, (3248), 1651 states have call predecessors, (3248), 1541 states have call successors, (3248) [2022-11-20 11:58:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25930 states to 25930 states and 33699 transitions. [2022-11-20 11:58:56,397 INFO L78 Accepts]: Start accepts. Automaton has 25930 states and 33699 transitions. Word has length 117 [2022-11-20 11:58:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:56,398 INFO L495 AbstractCegarLoop]: Abstraction has 25930 states and 33699 transitions. [2022-11-20 11:58:56,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:58:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 25930 states and 33699 transitions. [2022-11-20 11:58:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 11:58:56,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:56,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:56,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:58:56,408 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1526198724, now seen corresponding path program 1 times [2022-11-20 11:58:56,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:56,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864868011] [2022-11-20 11:58:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:58:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:58:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:58:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:58:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 11:58:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 11:58:56,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:56,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864868011] [2022-11-20 11:58:56,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864868011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:56,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:56,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842034792] [2022-11-20 11:58:56,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:56,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:58:56,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:58:56,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:58:56,493 INFO L87 Difference]: Start difference. First operand 25930 states and 33699 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:59:03,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:03,169 INFO L93 Difference]: Finished difference Result 57023 states and 74012 transitions. [2022-11-20 11:59:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:03,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 117 [2022-11-20 11:59:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:03,234 INFO L225 Difference]: With dead ends: 57023 [2022-11-20 11:59:03,234 INFO L226 Difference]: Without dead ends: 31110 [2022-11-20 11:59:03,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:03,272 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 437 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:03,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 281 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:59:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31110 states. [2022-11-20 11:59:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31110 to 25916. [2022-11-20 11:59:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25916 states, 22812 states have (on average 1.267008591969139) internal successors, (28903), 23194 states have internal predecessors, (28903), 1531 states have call successors, (1531), 1086 states have call predecessors, (1531), 1572 states have return successors, (3232), 1639 states have call predecessors, (3232), 1531 states have call successors, (3232) [2022-11-20 11:59:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25916 states to 25916 states and 33666 transitions. [2022-11-20 11:59:08,563 INFO L78 Accepts]: Start accepts. Automaton has 25916 states and 33666 transitions. Word has length 117 [2022-11-20 11:59:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:08,563 INFO L495 AbstractCegarLoop]: Abstraction has 25916 states and 33666 transitions. [2022-11-20 11:59:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:59:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 25916 states and 33666 transitions. [2022-11-20 11:59:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:59:08,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:08,569 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:08,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:59:08,569 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:08,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:08,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1564913749, now seen corresponding path program 1 times [2022-11-20 11:59:08,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:08,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466348735] [2022-11-20 11:59:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:08,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:08,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:59:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:59:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:59:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:59:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:59:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:59:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 11:59:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 11:59:08,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:08,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466348735] [2022-11-20 11:59:08,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466348735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:08,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:08,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:08,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855675400] [2022-11-20 11:59:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:08,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:08,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:08,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:08,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:08,787 INFO L87 Difference]: Start difference. First operand 25916 states and 33666 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:59:18,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:18,904 INFO L93 Difference]: Finished difference Result 81211 states and 105672 transitions. [2022-11-20 11:59:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:59:18,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 118 [2022-11-20 11:59:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:19,050 INFO L225 Difference]: With dead ends: 81211 [2022-11-20 11:59:19,050 INFO L226 Difference]: Without dead ends: 55316 [2022-11-20 11:59:19,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:59:19,094 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 807 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:19,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 606 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:59:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55316 states. [2022-11-20 11:59:27,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55316 to 46265. [2022-11-20 11:59:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46265 states, 40435 states have (on average 1.25937925064919) internal successors, (50923), 41211 states have internal predecessors, (50923), 2885 states have call successors, (2885), 1996 states have call predecessors, (2885), 2944 states have return successors, (6455), 3065 states have call predecessors, (6455), 2885 states have call successors, (6455) [2022-11-20 11:59:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46265 states to 46265 states and 60263 transitions. [2022-11-20 11:59:27,921 INFO L78 Accepts]: Start accepts. Automaton has 46265 states and 60263 transitions. Word has length 118 [2022-11-20 11:59:27,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:27,921 INFO L495 AbstractCegarLoop]: Abstraction has 46265 states and 60263 transitions. [2022-11-20 11:59:27,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:59:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 46265 states and 60263 transitions. [2022-11-20 11:59:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:59:27,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:27,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:59:27,933 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash 526329175, now seen corresponding path program 1 times [2022-11-20 11:59:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:27,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637667648] [2022-11-20 11:59:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:59:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:59:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:59:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:59:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:59:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:59:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 11:59:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 11:59:28,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:28,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637667648] [2022-11-20 11:59:28,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637667648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:28,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:28,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:59:28,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516028810] [2022-11-20 11:59:28,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:28,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:28,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:28,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:28,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:28,016 INFO L87 Difference]: Start difference. First operand 46265 states and 60263 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:59:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:39,075 INFO L93 Difference]: Finished difference Result 95055 states and 123901 transitions. [2022-11-20 11:59:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:39,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 118 [2022-11-20 11:59:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:39,201 INFO L225 Difference]: With dead ends: 95055 [2022-11-20 11:59:39,202 INFO L226 Difference]: Without dead ends: 48811 [2022-11-20 11:59:39,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:39,265 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 435 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:39,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 279 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:59:39,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48811 states. [2022-11-20 11:59:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48811 to 41260. [2022-11-20 11:59:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41260 states, 36100 states have (on average 1.2642105263157895) internal successors, (45638), 36790 states have internal predecessors, (45638), 2527 states have call successors, (2527), 1750 states have call predecessors, (2527), 2632 states have return successors, (5888), 2723 states have call predecessors, (5888), 2527 states have call successors, (5888) [2022-11-20 11:59:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41260 states to 41260 states and 54053 transitions. [2022-11-20 11:59:48,138 INFO L78 Accepts]: Start accepts. Automaton has 41260 states and 54053 transitions. Word has length 118 [2022-11-20 11:59:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:48,139 INFO L495 AbstractCegarLoop]: Abstraction has 41260 states and 54053 transitions. [2022-11-20 11:59:48,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:59:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand 41260 states and 54053 transitions. [2022-11-20 11:59:48,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 11:59:48,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:48,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:48,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:59:48,146 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:48,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1752203030, now seen corresponding path program 1 times [2022-11-20 11:59:48,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:48,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147025165] [2022-11-20 11:59:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:48,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:59:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:48,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:59:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:59:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:59:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:48,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:59:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:59:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:48,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 11:59:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 11:59:48,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:48,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147025165] [2022-11-20 11:59:48,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147025165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:48,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:48,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:59:48,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749028725] [2022-11-20 11:59:48,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:48,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:48,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:48,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:48,246 INFO L87 Difference]: Start difference. First operand 41260 states and 54053 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:00:03,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:03,246 INFO L93 Difference]: Finished difference Result 102970 states and 138769 transitions. [2022-11-20 12:00:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:00:03,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 119 [2022-11-20 12:00:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:03,412 INFO L225 Difference]: With dead ends: 102970 [2022-11-20 12:00:03,413 INFO L226 Difference]: Without dead ends: 54357 [2022-11-20 12:00:03,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:00:03,496 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 584 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:03,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 383 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:00:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54357 states.