./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa --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 f7497e4203b86f15acb74ef94ae3bce6255aa8233294110bb99f24cde0725dc7 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:14:31,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:14:31,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:14:31,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:14:31,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:14:31,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:14:31,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:14:31,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:14:31,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:14:31,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:14:31,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:14:31,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:14:31,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:14:31,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:14:31,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:14:31,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:14:31,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:14:31,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:14:31,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:14:31,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:14:31,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:14:31,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:14:31,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:14:31,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:14:31,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:14:31,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:14:31,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:14:31,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:14:31,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:14:31,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:14:31,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:14:31,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:14:31,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:14:31,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:14:31,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:14:31,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:14:31,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:14:31,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:14:31,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:14:31,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:14:31,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:14:31,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:14:31,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:14:31,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:14:31,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:14:31,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:14:31,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:14:31,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:14:31,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:14:31,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:14:31,727 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:14:31,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:14:31,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:14:31,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:14:31,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:14:31,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:14:31,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:14:31,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:14:31,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:14:31,728 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:14:31,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:14:31,728 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:14:31,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:14:31,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:14:31,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:14:31,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:14:31,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:14:31,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:14:31,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:14:31,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:14:31,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:14:31,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:14:31,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:14:31,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:14:31,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:14:31,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:14:31,730 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_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7497e4203b86f15acb74ef94ae3bce6255aa8233294110bb99f24cde0725dc7 [2021-12-06 19:14:31,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:14:31,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:14:31,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:14:31,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:14:31,934 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:14:31,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2021-12-06 19:14:31,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/data/37cb8b56e/88c5b1dca3b34e649986e90ead83b5bb/FLAG09f7a44f9 [2021-12-06 19:14:32,371 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:14:32,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2021-12-06 19:14:32,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/data/37cb8b56e/88c5b1dca3b34e649986e90ead83b5bb/FLAG09f7a44f9 [2021-12-06 19:14:32,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/data/37cb8b56e/88c5b1dca3b34e649986e90ead83b5bb [2021-12-06 19:14:32,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:14:32,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:14:32,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:14:32,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:14:32,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:14:32,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:14:32" (1/1) ... [2021-12-06 19:14:32,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb098de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:32, skipping insertion in model container [2021-12-06 19:14:32,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:14:32" (1/1) ... [2021-12-06 19:14:32,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:14:32,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:14:32,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c[11233,11246] [2021-12-06 19:14:32,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:14:32,960 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:14:32,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c[11233,11246] [2021-12-06 19:14:32,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:14:33,007 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:14:33,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33 WrapperNode [2021-12-06 19:14:33,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:14:33,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:14:33,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:14:33,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:14:33,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,045 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 333 [2021-12-06 19:14:33,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:14:33,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:14:33,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:14:33,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:14:33,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:14:33,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:14:33,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:14:33,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:14:33,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (1/1) ... [2021-12-06 19:14:33,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:14:33,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:14:33,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:14:33,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:14:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:14:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:14:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:14:33,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:14:33,225 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:14:33,226 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:14:33,482 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:14:33,487 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:14:33,487 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:14:33,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:14:33 BoogieIcfgContainer [2021-12-06 19:14:33,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:14:33,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:14:33,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:14:33,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:14:33,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:14:32" (1/3) ... [2021-12-06 19:14:33,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c323aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:14:33, skipping insertion in model container [2021-12-06 19:14:33,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:14:33" (2/3) ... [2021-12-06 19:14:33,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c323aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:14:33, skipping insertion in model container [2021-12-06 19:14:33,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:14:33" (3/3) ... [2021-12-06 19:14:33,495 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c [2021-12-06 19:14:33,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:14:33,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:14:33,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:14:33,537 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:14:33,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:14:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 19:14:33,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:33,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:33,555 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:33,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash 8392247, now seen corresponding path program 1 times [2021-12-06 19:14:33,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:33,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436682072] [2021-12-06 19:14:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:33,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:33,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:33,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436682072] [2021-12-06 19:14:33,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436682072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:33,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:33,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:14:33,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291357986] [2021-12-06 19:14:33,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:33,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 19:14:33,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 19:14:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:14:33,731 INFO L87 Difference]: Start difference. First operand has 93 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:33,750 INFO L93 Difference]: Finished difference Result 150 states and 246 transitions. [2021-12-06 19:14:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 19:14:33,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 19:14:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:33,759 INFO L225 Difference]: With dead ends: 150 [2021-12-06 19:14:33,759 INFO L226 Difference]: Without dead ends: 89 [2021-12-06 19:14:33,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:14:33,764 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:33,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-06 19:14:33,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-06 19:14:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.7045454545454546) internal successors, (150), 88 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 150 transitions. [2021-12-06 19:14:33,793 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 150 transitions. Word has length 33 [2021-12-06 19:14:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:33,794 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 150 transitions. [2021-12-06 19:14:33,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 150 transitions. [2021-12-06 19:14:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 19:14:33,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:33,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:33,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:14:33,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:33,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:33,797 INFO L85 PathProgramCache]: Analyzing trace with hash -501080843, now seen corresponding path program 1 times [2021-12-06 19:14:33,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:33,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808974409] [2021-12-06 19:14:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:33,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:33,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:33,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808974409] [2021-12-06 19:14:33,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808974409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:33,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:33,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:14:33,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866820925] [2021-12-06 19:14:33,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:33,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:14:33,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:33,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:14:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:14:33,870 INFO L87 Difference]: Start difference. First operand 89 states and 150 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:33,931 INFO L93 Difference]: Finished difference Result 145 states and 236 transitions. [2021-12-06 19:14:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:14:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 19:14:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:33,932 INFO L225 Difference]: With dead ends: 145 [2021-12-06 19:14:33,932 INFO L226 Difference]: Without dead ends: 89 [2021-12-06 19:14:33,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:14:33,934 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 3 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:33,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 558 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:33,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-06 19:14:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-06 19:14:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 88 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 119 transitions. [2021-12-06 19:14:33,943 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 119 transitions. Word has length 33 [2021-12-06 19:14:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:33,943 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 119 transitions. [2021-12-06 19:14:33,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 119 transitions. [2021-12-06 19:14:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 19:14:33,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:33,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:33,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:14:33,947 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash 988628396, now seen corresponding path program 1 times [2021-12-06 19:14:33,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:33,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836928945] [2021-12-06 19:14:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:33,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:34,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:34,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836928945] [2021-12-06 19:14:34,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836928945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:34,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:34,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:14:34,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911452734] [2021-12-06 19:14:34,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:34,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:14:34,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:14:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,055 INFO L87 Difference]: Start difference. First operand 89 states and 119 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:34,074 INFO L93 Difference]: Finished difference Result 187 states and 273 transitions. [2021-12-06 19:14:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:14:34,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 19:14:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:34,076 INFO L225 Difference]: With dead ends: 187 [2021-12-06 19:14:34,076 INFO L226 Difference]: Without dead ends: 135 [2021-12-06 19:14:34,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,077 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 72 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:34,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 267 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-06 19:14:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-12-06 19:14:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4318181818181819) internal successors, (189), 132 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 189 transitions. [2021-12-06 19:14:34,088 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 189 transitions. Word has length 63 [2021-12-06 19:14:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:34,088 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 189 transitions. [2021-12-06 19:14:34,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,088 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 189 transitions. [2021-12-06 19:14:34,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 19:14:34,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:34,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:34,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:14:34,090 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash 243045666, now seen corresponding path program 1 times [2021-12-06 19:14:34,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:34,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801920926] [2021-12-06 19:14:34,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:34,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:34,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:34,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801920926] [2021-12-06 19:14:34,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801920926] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:34,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:34,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:14:34,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7191046] [2021-12-06 19:14:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:34,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:14:34,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:14:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,148 INFO L87 Difference]: Start difference. First operand 133 states and 189 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:34,172 INFO L93 Difference]: Finished difference Result 313 states and 473 transitions. [2021-12-06 19:14:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:14:34,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 19:14:34,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:34,175 INFO L225 Difference]: With dead ends: 313 [2021-12-06 19:14:34,175 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 19:14:34,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,178 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:34,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 266 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 19:14:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2021-12-06 19:14:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.485981308411215) internal successors, (318), 214 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 318 transitions. [2021-12-06 19:14:34,198 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 318 transitions. Word has length 63 [2021-12-06 19:14:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:34,199 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 318 transitions. [2021-12-06 19:14:34,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 318 transitions. [2021-12-06 19:14:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 19:14:34,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:34,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:34,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:14:34,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:34,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1696985192, now seen corresponding path program 1 times [2021-12-06 19:14:34,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012521997] [2021-12-06 19:14:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:34,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:34,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:34,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012521997] [2021-12-06 19:14:34,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012521997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:34,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:34,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:14:34,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795347034] [2021-12-06 19:14:34,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:34,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:14:34,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:14:34,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,269 INFO L87 Difference]: Start difference. First operand 215 states and 318 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:34,295 INFO L93 Difference]: Finished difference Result 547 states and 840 transitions. [2021-12-06 19:14:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:14:34,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 19:14:34,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:34,298 INFO L225 Difference]: With dead ends: 547 [2021-12-06 19:14:34,299 INFO L226 Difference]: Without dead ends: 369 [2021-12-06 19:14:34,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,301 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 64 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:34,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 265 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:34,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-06 19:14:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2021-12-06 19:14:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.5136612021857923) internal successors, (554), 366 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 554 transitions. [2021-12-06 19:14:34,328 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 554 transitions. Word has length 63 [2021-12-06 19:14:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:34,328 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 554 transitions. [2021-12-06 19:14:34,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 554 transitions. [2021-12-06 19:14:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 19:14:34,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:34,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:34,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:14:34,330 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:34,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1003697422, now seen corresponding path program 1 times [2021-12-06 19:14:34,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:34,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023857775] [2021-12-06 19:14:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:34,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:34,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:34,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023857775] [2021-12-06 19:14:34,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023857775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:34,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:34,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:14:34,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208214127] [2021-12-06 19:14:34,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:34,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:14:34,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:14:34,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,394 INFO L87 Difference]: Start difference. First operand 367 states and 554 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:34,428 INFO L93 Difference]: Finished difference Result 979 states and 1508 transitions. [2021-12-06 19:14:34,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:14:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 19:14:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:34,434 INFO L225 Difference]: With dead ends: 979 [2021-12-06 19:14:34,434 INFO L226 Difference]: Without dead ends: 649 [2021-12-06 19:14:34,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,437 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 60 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:34,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 264 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-12-06 19:14:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 647. [2021-12-06 19:14:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.520123839009288) internal successors, (982), 646 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 982 transitions. [2021-12-06 19:14:34,469 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 982 transitions. Word has length 63 [2021-12-06 19:14:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:34,469 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 982 transitions. [2021-12-06 19:14:34,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,470 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 982 transitions. [2021-12-06 19:14:34,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 19:14:34,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:34,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:34,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:14:34,471 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:34,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1341490564, now seen corresponding path program 1 times [2021-12-06 19:14:34,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:34,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475976789] [2021-12-06 19:14:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:34,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:34,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475976789] [2021-12-06 19:14:34,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475976789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:34,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:34,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:14:34,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683801894] [2021-12-06 19:14:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:34,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:14:34,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:34,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:14:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,526 INFO L87 Difference]: Start difference. First operand 647 states and 982 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:34,570 INFO L93 Difference]: Finished difference Result 1771 states and 2712 transitions. [2021-12-06 19:14:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:14:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 19:14:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:34,576 INFO L225 Difference]: With dead ends: 1771 [2021-12-06 19:14:34,576 INFO L226 Difference]: Without dead ends: 1161 [2021-12-06 19:14:34,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:34,578 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:34,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 263 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:34,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-12-06 19:14:34,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1159. [2021-12-06 19:14:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 1.5112262521588946) internal successors, (1750), 1158 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1750 transitions. [2021-12-06 19:14:34,624 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1750 transitions. Word has length 63 [2021-12-06 19:14:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:34,625 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1750 transitions. [2021-12-06 19:14:34,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:34,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1750 transitions. [2021-12-06 19:14:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 19:14:34,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:34,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:34,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:14:34,626 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:34,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:34,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1735491334, now seen corresponding path program 1 times [2021-12-06 19:14:34,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:34,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54678436] [2021-12-06 19:14:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:34,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:34,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:34,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54678436] [2021-12-06 19:14:34,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54678436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:34,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:34,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:14:34,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284849819] [2021-12-06 19:14:34,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:34,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:14:34,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:14:34,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:14:34,691 INFO L87 Difference]: Start difference. First operand 1159 states and 1750 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:35,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:35,101 INFO L93 Difference]: Finished difference Result 12379 states and 18880 transitions. [2021-12-06 19:14:35,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:14:35,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 19:14:35,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:35,152 INFO L225 Difference]: With dead ends: 12379 [2021-12-06 19:14:35,152 INFO L226 Difference]: Without dead ends: 11257 [2021-12-06 19:14:35,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:14:35,156 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 1317 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:35,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 953 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:14:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2021-12-06 19:14:35,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 2279. [2021-12-06 19:14:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.491659350307287) internal successors, (3398), 2278 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3398 transitions. [2021-12-06 19:14:35,368 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3398 transitions. Word has length 63 [2021-12-06 19:14:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:35,368 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 3398 transitions. [2021-12-06 19:14:35,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3398 transitions. [2021-12-06 19:14:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:14:35,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:35,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:35,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:14:35,369 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:35,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:35,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1519410410, now seen corresponding path program 1 times [2021-12-06 19:14:35,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:35,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836602665] [2021-12-06 19:14:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:35,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:35,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:35,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836602665] [2021-12-06 19:14:35,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836602665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:35,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:35,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:14:35,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016592732] [2021-12-06 19:14:35,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:35,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:14:35,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:14:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:35,416 INFO L87 Difference]: Start difference. First operand 2279 states and 3398 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:35,556 INFO L93 Difference]: Finished difference Result 5565 states and 8314 transitions. [2021-12-06 19:14:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:14:35,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-06 19:14:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:35,578 INFO L225 Difference]: With dead ends: 5565 [2021-12-06 19:14:35,578 INFO L226 Difference]: Without dead ends: 3323 [2021-12-06 19:14:35,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:14:35,581 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 48 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:35,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 226 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2021-12-06 19:14:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3321. [2021-12-06 19:14:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.4771084337349398) internal successors, (4904), 3320 states have internal predecessors, (4904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4904 transitions. [2021-12-06 19:14:35,724 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4904 transitions. Word has length 65 [2021-12-06 19:14:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:35,725 INFO L470 AbstractCegarLoop]: Abstraction has 3321 states and 4904 transitions. [2021-12-06 19:14:35,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:35,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4904 transitions. [2021-12-06 19:14:35,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:14:35,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:35,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:35,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:14:35,726 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:35,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1585903922, now seen corresponding path program 1 times [2021-12-06 19:14:35,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:35,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455548350] [2021-12-06 19:14:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:35,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:35,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:35,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455548350] [2021-12-06 19:14:35,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455548350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:35,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:35,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:14:35,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637854130] [2021-12-06 19:14:35,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:35,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:14:35,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:35,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:14:35,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:14:35,862 INFO L87 Difference]: Start difference. First operand 3321 states and 4904 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:36,059 INFO L93 Difference]: Finished difference Result 6605 states and 9770 transitions. [2021-12-06 19:14:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:14:36,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-06 19:14:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:36,078 INFO L225 Difference]: With dead ends: 6605 [2021-12-06 19:14:36,078 INFO L226 Difference]: Without dead ends: 3323 [2021-12-06 19:14:36,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:14:36,083 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 337 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:36,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 425 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:36,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2021-12-06 19:14:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3321. [2021-12-06 19:14:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.4626506024096386) internal successors, (4856), 3320 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4856 transitions. [2021-12-06 19:14:36,279 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4856 transitions. Word has length 65 [2021-12-06 19:14:36,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:36,279 INFO L470 AbstractCegarLoop]: Abstraction has 3321 states and 4856 transitions. [2021-12-06 19:14:36,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4856 transitions. [2021-12-06 19:14:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 19:14:36,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:36,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:36,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:14:36,281 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:36,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:36,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1503658279, now seen corresponding path program 1 times [2021-12-06 19:14:36,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:36,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262242286] [2021-12-06 19:14:36,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:36,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:36,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:36,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262242286] [2021-12-06 19:14:36,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262242286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:36,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:36,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:14:36,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010186862] [2021-12-06 19:14:36,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:36,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:14:36,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:14:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:14:36,360 INFO L87 Difference]: Start difference. First operand 3321 states and 4856 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:36,716 INFO L93 Difference]: Finished difference Result 6164 states and 8906 transitions. [2021-12-06 19:14:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:14:36,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-06 19:14:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:36,747 INFO L225 Difference]: With dead ends: 6164 [2021-12-06 19:14:36,747 INFO L226 Difference]: Without dead ends: 6162 [2021-12-06 19:14:36,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:14:36,749 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 628 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:36,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 580 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:36,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2021-12-06 19:14:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 3513. [2021-12-06 19:14:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 1.4328018223234624) internal successors, (5032), 3512 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 5032 transitions. [2021-12-06 19:14:36,909 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 5032 transitions. Word has length 66 [2021-12-06 19:14:36,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:36,910 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 5032 transitions. [2021-12-06 19:14:36,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 5032 transitions. [2021-12-06 19:14:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 19:14:36,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:36,913 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:36,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 19:14:36,913 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:36,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:36,913 INFO L85 PathProgramCache]: Analyzing trace with hash 550206538, now seen corresponding path program 1 times [2021-12-06 19:14:36,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:36,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633874278] [2021-12-06 19:14:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:36,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 19:14:36,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:36,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633874278] [2021-12-06 19:14:36,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633874278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:36,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:36,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:14:36,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876108629] [2021-12-06 19:14:36,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:36,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:14:36,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:36,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:14:36,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:14:36,972 INFO L87 Difference]: Start difference. First operand 3513 states and 5032 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:37,668 INFO L93 Difference]: Finished difference Result 21589 states and 30958 transitions. [2021-12-06 19:14:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:14:37,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-06 19:14:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:37,694 INFO L225 Difference]: With dead ends: 21589 [2021-12-06 19:14:37,694 INFO L226 Difference]: Without dead ends: 18115 [2021-12-06 19:14:37,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:14:37,700 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 843 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:37,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 673 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:14:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18115 states. [2021-12-06 19:14:38,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18115 to 6985. [2021-12-06 19:14:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6985 states, 6984 states have (on average 1.4284077892325315) internal successors, (9976), 6984 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 9976 transitions. [2021-12-06 19:14:38,075 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 9976 transitions. Word has length 94 [2021-12-06 19:14:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:38,076 INFO L470 AbstractCegarLoop]: Abstraction has 6985 states and 9976 transitions. [2021-12-06 19:14:38,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 9976 transitions. [2021-12-06 19:14:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 19:14:38,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:38,080 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:38,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:14:38,080 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1218576278, now seen corresponding path program 1 times [2021-12-06 19:14:38,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:38,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453442417] [2021-12-06 19:14:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:38,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:14:38,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:38,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453442417] [2021-12-06 19:14:38,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453442417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:38,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:38,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:14:38,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517735531] [2021-12-06 19:14:38,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:38,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:14:38,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:14:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:14:38,146 INFO L87 Difference]: Start difference. First operand 6985 states and 9976 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:38,962 INFO L93 Difference]: Finished difference Result 25061 states and 35902 transitions. [2021-12-06 19:14:38,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:14:38,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-06 19:14:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:38,992 INFO L225 Difference]: With dead ends: 25061 [2021-12-06 19:14:38,993 INFO L226 Difference]: Without dead ends: 21587 [2021-12-06 19:14:39,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:14:39,000 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 739 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:39,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 738 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:14:39,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21587 states. [2021-12-06 19:14:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21587 to 12201. [2021-12-06 19:14:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12201 states, 12200 states have (on average 1.422295081967213) internal successors, (17352), 12200 states have internal predecessors, (17352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12201 states to 12201 states and 17352 transitions. [2021-12-06 19:14:39,572 INFO L78 Accepts]: Start accepts. Automaton has 12201 states and 17352 transitions. Word has length 94 [2021-12-06 19:14:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:39,572 INFO L470 AbstractCegarLoop]: Abstraction has 12201 states and 17352 transitions. [2021-12-06 19:14:39,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand 12201 states and 17352 transitions. [2021-12-06 19:14:39,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 19:14:39,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:39,576 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:39,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:14:39,576 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:39,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash -86936438, now seen corresponding path program 1 times [2021-12-06 19:14:39,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:39,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980963281] [2021-12-06 19:14:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:39,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:14:39,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:39,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980963281] [2021-12-06 19:14:39,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980963281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:39,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:39,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:14:39,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777340266] [2021-12-06 19:14:39,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:39,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:14:39,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:14:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:14:39,631 INFO L87 Difference]: Start difference. First operand 12201 states and 17352 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:40,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:40,577 INFO L93 Difference]: Finished difference Result 28533 states and 40846 transitions. [2021-12-06 19:14:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:14:40,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-06 19:14:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:40,609 INFO L225 Difference]: With dead ends: 28533 [2021-12-06 19:14:40,609 INFO L226 Difference]: Without dead ends: 25059 [2021-12-06 19:14:40,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:14:40,616 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 756 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:40,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 750 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25059 states. [2021-12-06 19:14:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25059 to 15673. [2021-12-06 19:14:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15673 states, 15672 states have (on average 1.4226646248085757) internal successors, (22296), 15672 states have internal predecessors, (22296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15673 states to 15673 states and 22296 transitions. [2021-12-06 19:14:41,398 INFO L78 Accepts]: Start accepts. Automaton has 15673 states and 22296 transitions. Word has length 94 [2021-12-06 19:14:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:41,399 INFO L470 AbstractCegarLoop]: Abstraction has 15673 states and 22296 transitions. [2021-12-06 19:14:41,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 15673 states and 22296 transitions. [2021-12-06 19:14:41,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 19:14:41,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:41,403 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:41,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:14:41,403 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1322395478, now seen corresponding path program 1 times [2021-12-06 19:14:41,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:41,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240921430] [2021-12-06 19:14:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:41,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:14:41,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:41,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240921430] [2021-12-06 19:14:41,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240921430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:41,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:41,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:14:41,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999697371] [2021-12-06 19:14:41,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:41,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:14:41,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:14:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:14:41,456 INFO L87 Difference]: Start difference. First operand 15673 states and 22296 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:42,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:42,588 INFO L93 Difference]: Finished difference Result 32005 states and 45790 transitions. [2021-12-06 19:14:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:14:42,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-06 19:14:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:42,617 INFO L225 Difference]: With dead ends: 32005 [2021-12-06 19:14:42,617 INFO L226 Difference]: Without dead ends: 28531 [2021-12-06 19:14:42,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:14:42,624 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 826 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:42,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 755 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2021-12-06 19:14:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 19145. [2021-12-06 19:14:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19145 states, 19144 states have (on average 1.42290012536565) internal successors, (27240), 19144 states have internal predecessors, (27240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19145 states to 19145 states and 27240 transitions. [2021-12-06 19:14:43,659 INFO L78 Accepts]: Start accepts. Automaton has 19145 states and 27240 transitions. Word has length 94 [2021-12-06 19:14:43,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:43,659 INFO L470 AbstractCegarLoop]: Abstraction has 19145 states and 27240 transitions. [2021-12-06 19:14:43,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 19145 states and 27240 transitions. [2021-12-06 19:14:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 19:14:43,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:43,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:43,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:14:43,664 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:43,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:43,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1551576266, now seen corresponding path program 1 times [2021-12-06 19:14:43,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:43,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914292109] [2021-12-06 19:14:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:43,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:14:43,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:43,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914292109] [2021-12-06 19:14:43,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914292109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:14:43,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:14:43,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:14:43,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739340822] [2021-12-06 19:14:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:14:43,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:14:43,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:14:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:14:43,725 INFO L87 Difference]: Start difference. First operand 19145 states and 27240 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:45,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:45,070 INFO L93 Difference]: Finished difference Result 33397 states and 47790 transitions. [2021-12-06 19:14:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:14:45,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-06 19:14:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:45,102 INFO L225 Difference]: With dead ends: 33397 [2021-12-06 19:14:45,102 INFO L226 Difference]: Without dead ends: 30963 [2021-12-06 19:14:45,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:14:45,112 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 823 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:45,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 698 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:14:45,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30963 states. [2021-12-06 19:14:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30963 to 21577. [2021-12-06 19:14:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21577 states, 21576 states have (on average 1.4241750092695589) internal successors, (30728), 21576 states have internal predecessors, (30728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21577 states to 21577 states and 30728 transitions. [2021-12-06 19:14:46,237 INFO L78 Accepts]: Start accepts. Automaton has 21577 states and 30728 transitions. Word has length 94 [2021-12-06 19:14:46,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:46,238 INFO L470 AbstractCegarLoop]: Abstraction has 21577 states and 30728 transitions. [2021-12-06 19:14:46,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:46,238 INFO L276 IsEmpty]: Start isEmpty. Operand 21577 states and 30728 transitions. [2021-12-06 19:14:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 19:14:46,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:46,242 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:46,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:14:46,242 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:46,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:46,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1418973216, now seen corresponding path program 1 times [2021-12-06 19:14:46,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:46,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243196801] [2021-12-06 19:14:46,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:46,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:14:46,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:46,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243196801] [2021-12-06 19:14:46,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243196801] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:14:46,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649668849] [2021-12-06 19:14:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:46,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:14:46,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:14:46,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:14:46,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:14:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:46,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 19:14:46,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:14:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:14:46,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:14:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:14:46,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649668849] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:14:46,951 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:14:46,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2021-12-06 19:14:46,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238425191] [2021-12-06 19:14:46,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:14:46,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:14:46,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:46,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:14:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:14:46,954 INFO L87 Difference]: Start difference. First operand 21577 states and 30728 transitions. Second operand has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:49,579 INFO L93 Difference]: Finished difference Result 64812 states and 93081 transitions. [2021-12-06 19:14:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:14:49,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-06 19:14:49,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:49,626 INFO L225 Difference]: With dead ends: 64812 [2021-12-06 19:14:49,627 INFO L226 Difference]: Without dead ends: 49002 [2021-12-06 19:14:49,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:14:49,644 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 539 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:49,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 719 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:14:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49002 states. [2021-12-06 19:14:52,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49002 to 48473. [2021-12-06 19:14:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48473 states, 48472 states have (on average 1.4112889915827693) internal successors, (68408), 48472 states have internal predecessors, (68408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48473 states to 48473 states and 68408 transitions. [2021-12-06 19:14:52,099 INFO L78 Accepts]: Start accepts. Automaton has 48473 states and 68408 transitions. Word has length 95 [2021-12-06 19:14:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:14:52,100 INFO L470 AbstractCegarLoop]: Abstraction has 48473 states and 68408 transitions. [2021-12-06 19:14:52,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:14:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 48473 states and 68408 transitions. [2021-12-06 19:14:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 19:14:52,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:14:52,104 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:14:52,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:14:52,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:14:52,306 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:14:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:14:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash -881696638, now seen corresponding path program 1 times [2021-12-06 19:14:52,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:14:52,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654254780] [2021-12-06 19:14:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:52,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:14:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:52,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:14:52,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654254780] [2021-12-06 19:14:52,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654254780] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:14:52,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430337546] [2021-12-06 19:14:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:14:52,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:14:52,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:14:52,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:14:52,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:14:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:14:52,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 19:14:52,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:14:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:53,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:14:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:14:53,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430337546] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:14:53,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:14:53,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2021-12-06 19:14:53,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974519753] [2021-12-06 19:14:53,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:14:53,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 19:14:53,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:14:53,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 19:14:53,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:14:53,630 INFO L87 Difference]: Start difference. First operand 48473 states and 68408 transitions. Second operand has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 29 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:15:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:15:53,608 INFO L93 Difference]: Finished difference Result 827807 states and 1138240 transitions. [2021-12-06 19:15:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 265 states. [2021-12-06 19:15:53,609 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 29 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-06 19:15:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:15:54,864 INFO L225 Difference]: With dead ends: 827807 [2021-12-06 19:15:54,864 INFO L226 Difference]: Without dead ends: 779373 [2021-12-06 19:15:55,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35849 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=10097, Invalid=75459, Unknown=0, NotChecked=0, Total=85556 [2021-12-06 19:15:55,048 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 7831 mSDsluCounter, 3654 mSDsCounter, 0 mSdLazyCounter, 4466 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7831 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 4954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 4466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:15:55,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7831 Valid, 4005 Invalid, 4954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 4466 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 19:15:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779373 states. [2021-12-06 19:16:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779373 to 243169. [2021-12-06 19:16:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243169 states, 243168 states have (on average 1.3961458744571653) internal successors, (339498), 243168 states have internal predecessors, (339498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:16:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243169 states to 243169 states and 339498 transitions. [2021-12-06 19:16:16,381 INFO L78 Accepts]: Start accepts. Automaton has 243169 states and 339498 transitions. Word has length 96 [2021-12-06 19:16:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:16:16,381 INFO L470 AbstractCegarLoop]: Abstraction has 243169 states and 339498 transitions. [2021-12-06 19:16:16,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 29 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:16:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 243169 states and 339498 transitions. [2021-12-06 19:16:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 19:16:16,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:16:16,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:16:16,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:16:16,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 19:16:16,591 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:16:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:16:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1528395564, now seen corresponding path program 1 times [2021-12-06 19:16:16,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:16:16,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275600213] [2021-12-06 19:16:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:16:16,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:16:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:16:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:16:16,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:16:16,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275600213] [2021-12-06 19:16:16,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275600213] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:16:16,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440908452] [2021-12-06 19:16:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:16:16,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:16:16,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:16:16,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:16:16,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd15dfa2-6879-46dd-984c-1439b2bf1042/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:16:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:16:16,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 19:16:16,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:16:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:16:17,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:16:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:16:17,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440908452] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:16:17,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:16:17,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2021-12-06 19:16:17,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998889440] [2021-12-06 19:16:17,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:16:17,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 19:16:17,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:16:17,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 19:16:17,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:16:17,960 INFO L87 Difference]: Start difference. First operand 243169 states and 339498 transitions. Second operand has 30 states, 30 states have (on average 9.133333333333333) internal successors, (274), 29 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:23:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:54,833 INFO L93 Difference]: Finished difference Result 5479397 states and 7479441 transitions. [2021-12-06 19:23:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 476 states. [2021-12-06 19:23:54,834 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.133333333333333) internal successors, (274), 29 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-06 19:23:54,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:24:04,432 INFO L225 Difference]: With dead ends: 5479397 [2021-12-06 19:24:04,433 INFO L226 Difference]: Without dead ends: 5236267 [2021-12-06 19:24:06,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 502 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113304 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=23127, Invalid=230385, Unknown=0, NotChecked=0, Total=253512 [2021-12-06 19:24:06,525 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 10258 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 4916 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10258 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 5748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 4916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:24:06,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10258 Valid, 3624 Invalid, 5748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 4916 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 19:24:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236267 states.