./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 686ecb1010b71c794fc4e873862aa984c2fdfbe32a68bd8271c0851d6420f945 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:29:37,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:29:37,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:29:37,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:29:37,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:29:37,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:29:37,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:29:37,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:29:37,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:29:37,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:29:37,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:29:37,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:29:37,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:29:37,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:29:37,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:29:37,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:29:37,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:29:37,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:29:37,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:29:37,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:29:37,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:29:37,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:29:37,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:29:37,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:29:37,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:29:37,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:29:37,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:29:37,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:29:37,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:29:37,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:29:37,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:29:37,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:29:37,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:29:37,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:29:37,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:29:37,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:29:37,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:29:37,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:29:37,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:29:37,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:29:37,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:29:37,853 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:29:37,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:29:37,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:29:37,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:29:37,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:29:37,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:29:37,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:29:37,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:29:37,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:29:37,918 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:29:37,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:29:37,920 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:29:37,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:29:37,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:29:37,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:29:37,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:29:37,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:29:37,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:29:37,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:29:37,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:29:37,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:29:37,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:29:37,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:29:37,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:29:37,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:29:37,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:29:37,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:29:37,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:29:37,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:29:37,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:29:37,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:29:37,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:29:37,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:29:37,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:29:37,927 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_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 686ecb1010b71c794fc4e873862aa984c2fdfbe32a68bd8271c0851d6420f945 [2022-11-20 12:29:38,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:29:38,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:29:38,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:29:38,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:29:38,362 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:29:38,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2022-11-20 12:29:42,336 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:29:42,603 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:29:42,603 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2022-11-20 12:29:42,620 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/data/87976994b/30ff2ff52b4d482a94fc7b1f281bfd0c/FLAG53660675b [2022-11-20 12:29:42,649 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/data/87976994b/30ff2ff52b4d482a94fc7b1f281bfd0c [2022-11-20 12:29:42,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:29:42,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:29:42,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:29:42,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:29:42,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:29:42,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:29:42" (1/1) ... [2022-11-20 12:29:42,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60448f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:42, skipping insertion in model container [2022-11-20 12:29:42,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:29:42" (1/1) ... [2022-11-20 12:29:42,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:29:42,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:29:42,971 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c[913,926] [2022-11-20 12:29:43,032 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c[5977,5990] [2022-11-20 12:29:43,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:29:43,204 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:29:43,230 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c[913,926] [2022-11-20 12:29:43,271 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-1.c[5977,5990] [2022-11-20 12:29:43,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:29:43,374 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:29:43,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43 WrapperNode [2022-11-20 12:29:43,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:29:43,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:29:43,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:29:43,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:29:43,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,457 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 765 [2022-11-20 12:29:43,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:29:43,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:29:43,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:29:43,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:29:43,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,513 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:29:43,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:29:43,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:29:43,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:29:43,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (1/1) ... [2022-11-20 12:29:43,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:29:43,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:43,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:29:43,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:29:43,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:29:43,686 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 12:29:43,686 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 12:29:43,687 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-11-20 12:29:43,689 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-11-20 12:29:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-20 12:29:43,690 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-20 12:29:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-20 12:29:43,691 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-20 12:29:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-20 12:29:43,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-20 12:29:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-20 12:29:43,692 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-20 12:29:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-20 12:29:43,692 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-20 12:29:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:29:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-20 12:29:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-20 12:29:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:29:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:29:43,694 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-20 12:29:43,694 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-20 12:29:43,934 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:29:43,955 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:29:45,121 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:29:45,136 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:29:45,136 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-20 12:29:45,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:29:45 BoogieIcfgContainer [2022-11-20 12:29:45,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:29:45,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:29:45,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:29:45,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:29:45,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:29:42" (1/3) ... [2022-11-20 12:29:45,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5283b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:29:45, skipping insertion in model container [2022-11-20 12:29:45,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:29:43" (2/3) ... [2022-11-20 12:29:45,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5283b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:29:45, skipping insertion in model container [2022-11-20 12:29:45,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:29:45" (3/3) ... [2022-11-20 12:29:45,161 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.07.cil-1.c [2022-11-20 12:29:45,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:29:45,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:29:45,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:29:45,297 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7928a0e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:29:45,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:29:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 329 states, 290 states have (on average 1.6241379310344828) internal successors, (471), 295 states have internal predecessors, (471), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 12:29:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 12:29:45,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:45,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:45,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash 679233758, now seen corresponding path program 1 times [2022-11-20 12:29:45,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:45,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839751891] [2022-11-20 12:29:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:45,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:29:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:45,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:29:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:29:45,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:45,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839751891] [2022-11-20 12:29:45,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839751891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:45,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:45,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:29:45,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403959155] [2022-11-20 12:29:45,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:45,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:45,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:45,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:45,826 INFO L87 Difference]: Start difference. First operand has 329 states, 290 states have (on average 1.6241379310344828) internal successors, (471), 295 states have internal predecessors, (471), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:29:46,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:46,829 INFO L93 Difference]: Finished difference Result 708 states and 1128 transitions. [2022-11-20 12:29:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:46,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-20 12:29:46,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:46,850 INFO L225 Difference]: With dead ends: 708 [2022-11-20 12:29:46,851 INFO L226 Difference]: Without dead ends: 389 [2022-11-20 12:29:46,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:29:46,867 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 644 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:46,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 652 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:29:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-20 12:29:47,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 383. [2022-11-20 12:29:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 339 states have (on average 1.4985250737463127) internal successors, (508), 343 states have internal predecessors, (508), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2022-11-20 12:29:47,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 574 transitions. [2022-11-20 12:29:47,023 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 574 transitions. Word has length 44 [2022-11-20 12:29:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:47,024 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 574 transitions. [2022-11-20 12:29:47,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:29:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 574 transitions. [2022-11-20 12:29:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 12:29:47,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:47,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:47,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:29:47,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash -847205656, now seen corresponding path program 1 times [2022-11-20 12:29:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:47,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619461709] [2022-11-20 12:29:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:29:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:29:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:29:47,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:47,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619461709] [2022-11-20 12:29:47,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619461709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:47,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:47,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:29:47,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094472866] [2022-11-20 12:29:47,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:47,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:47,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:47,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:47,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:47,195 INFO L87 Difference]: Start difference. First operand 383 states and 574 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:29:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:47,842 INFO L93 Difference]: Finished difference Result 631 states and 914 transitions. [2022-11-20 12:29:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:47,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-20 12:29:47,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:47,848 INFO L225 Difference]: With dead ends: 631 [2022-11-20 12:29:47,849 INFO L226 Difference]: Without dead ends: 507 [2022-11-20 12:29:47,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:29:47,852 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 269 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:47,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 875 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:29:47,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-20 12:29:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 450. [2022-11-20 12:29:47,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 400 states have (on average 1.48) internal successors, (592), 404 states have internal predecessors, (592), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2022-11-20 12:29:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 664 transitions. [2022-11-20 12:29:47,906 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 664 transitions. Word has length 45 [2022-11-20 12:29:47,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:47,906 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 664 transitions. [2022-11-20 12:29:47,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:29:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 664 transitions. [2022-11-20 12:29:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 12:29:47,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:47,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:47,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:29:47,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:47,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2131563117, now seen corresponding path program 1 times [2022-11-20 12:29:47,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:47,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768121055] [2022-11-20 12:29:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:47,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:29:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:48,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:29:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:29:48,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:48,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768121055] [2022-11-20 12:29:48,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768121055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:48,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:48,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:29:48,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78171068] [2022-11-20 12:29:48,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:48,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:48,081 INFO L87 Difference]: Start difference. First operand 450 states and 664 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:29:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:48,660 INFO L93 Difference]: Finished difference Result 858 states and 1223 transitions. [2022-11-20 12:29:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-20 12:29:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:48,670 INFO L225 Difference]: With dead ends: 858 [2022-11-20 12:29:48,670 INFO L226 Difference]: Without dead ends: 667 [2022-11-20 12:29:48,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:29:48,674 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 653 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:48,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 648 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:29:48,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-20 12:29:48,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 615. [2022-11-20 12:29:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 546 states have (on average 1.4322344322344323) internal successors, (782), 553 states have internal predecessors, (782), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (55), 41 states have call predecessors, (55), 43 states have call successors, (55) [2022-11-20 12:29:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 882 transitions. [2022-11-20 12:29:48,741 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 882 transitions. Word has length 45 [2022-11-20 12:29:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:48,742 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 882 transitions. [2022-11-20 12:29:48,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:29:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 882 transitions. [2022-11-20 12:29:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 12:29:48,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:48,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:48,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:29:48,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1411746514, now seen corresponding path program 1 times [2022-11-20 12:29:48,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:48,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018867582] [2022-11-20 12:29:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:48,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:29:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 12:29:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 12:29:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:29:48,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:48,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018867582] [2022-11-20 12:29:48,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018867582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:48,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:48,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:29:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318457143] [2022-11-20 12:29:48,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:48,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:48,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:48,893 INFO L87 Difference]: Start difference. First operand 615 states and 882 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:29:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:49,548 INFO L93 Difference]: Finished difference Result 1199 states and 1667 transitions. [2022-11-20 12:29:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:49,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-11-20 12:29:49,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:49,559 INFO L225 Difference]: With dead ends: 1199 [2022-11-20 12:29:49,559 INFO L226 Difference]: Without dead ends: 843 [2022-11-20 12:29:49,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:29:49,573 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 253 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:49,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 927 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:29:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-20 12:29:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 805. [2022-11-20 12:29:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 712 states have (on average 1.3792134831460674) internal successors, (982), 721 states have internal predecessors, (982), 59 states have call successors, (59), 29 states have call predecessors, (59), 32 states have return successors, (79), 55 states have call predecessors, (79), 57 states have call successors, (79) [2022-11-20 12:29:49,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1120 transitions. [2022-11-20 12:29:49,678 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1120 transitions. Word has length 62 [2022-11-20 12:29:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:49,682 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1120 transitions. [2022-11-20 12:29:49,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:29:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1120 transitions. [2022-11-20 12:29:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 12:29:49,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:49,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:49,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:29:49,691 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1771502045, now seen corresponding path program 1 times [2022-11-20 12:29:49,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:49,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244122356] [2022-11-20 12:29:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:49,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:29:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:49,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:29:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:29:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 12:29:49,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:49,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244122356] [2022-11-20 12:29:49,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244122356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:49,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:49,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:29:49,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991064452] [2022-11-20 12:29:49,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:49,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:49,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:49,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:49,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:29:49,924 INFO L87 Difference]: Start difference. First operand 805 states and 1120 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 12:29:50,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:50,476 INFO L93 Difference]: Finished difference Result 1458 states and 1973 transitions. [2022-11-20 12:29:50,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:29:50,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-11-20 12:29:50,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:50,485 INFO L225 Difference]: With dead ends: 1458 [2022-11-20 12:29:50,485 INFO L226 Difference]: Without dead ends: 1004 [2022-11-20 12:29:50,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:29:50,488 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 640 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:50,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 646 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:29:50,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-20 12:29:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 949. [2022-11-20 12:29:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 840 states have (on average 1.348809523809524) internal successors, (1133), 851 states have internal predecessors, (1133), 67 states have call successors, (67), 35 states have call predecessors, (67), 40 states have return successors, (93), 63 states have call predecessors, (93), 65 states have call successors, (93) [2022-11-20 12:29:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1293 transitions. [2022-11-20 12:29:50,586 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1293 transitions. Word has length 67 [2022-11-20 12:29:50,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:50,587 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1293 transitions. [2022-11-20 12:29:50,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 12:29:50,587 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1293 transitions. [2022-11-20 12:29:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 12:29:50,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:50,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:50,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:29:50,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:50,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:50,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1913188561, now seen corresponding path program 1 times [2022-11-20 12:29:50,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:50,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089975802] [2022-11-20 12:29:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:50,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:29:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:29:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:50,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 12:29:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:29:50,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:50,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089975802] [2022-11-20 12:29:50,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089975802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391363845] [2022-11-20 12:29:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:50,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:50,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:50,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:50,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:29:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:51,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:29:51,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:29:51,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:29:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:29:51,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391363845] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:51,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:29:51,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-11-20 12:29:51,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554231539] [2022-11-20 12:29:51,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:29:51,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:51,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:29:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:29:51,424 INFO L87 Difference]: Start difference. First operand 949 states and 1293 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:29:51,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:51,709 INFO L93 Difference]: Finished difference Result 1005 states and 1361 transitions. [2022-11-20 12:29:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:29:51,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-11-20 12:29:51,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:51,717 INFO L225 Difference]: With dead ends: 1005 [2022-11-20 12:29:51,717 INFO L226 Difference]: Without dead ends: 1002 [2022-11-20 12:29:51,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:29:51,721 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 869 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:51,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 575 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:29:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2022-11-20 12:29:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 948. [2022-11-20 12:29:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 840 states have (on average 1.3464285714285715) internal successors, (1131), 850 states have internal predecessors, (1131), 66 states have call successors, (66), 35 states have call predecessors, (66), 40 states have return successors, (93), 63 states have call predecessors, (93), 65 states have call successors, (93) [2022-11-20 12:29:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1290 transitions. [2022-11-20 12:29:51,831 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1290 transitions. Word has length 68 [2022-11-20 12:29:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:51,834 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1290 transitions. [2022-11-20 12:29:51,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:29:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1290 transitions. [2022-11-20 12:29:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 12:29:51,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:51,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:51,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:52,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:29:52,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:52,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:52,047 INFO L85 PathProgramCache]: Analyzing trace with hash -821723040, now seen corresponding path program 1 times [2022-11-20 12:29:52,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:52,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576405428] [2022-11-20 12:29:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:52,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:52,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:29:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:52,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:29:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 12:29:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:29:52,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:52,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576405428] [2022-11-20 12:29:52,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576405428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:52,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158283813] [2022-11-20 12:29:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:52,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:52,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:52,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:52,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:29:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:52,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:29:52,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:29:52,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:29:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:29:52,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158283813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:29:52,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:29:52,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-11-20 12:29:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285823411] [2022-11-20 12:29:52,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:29:53,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:29:53,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:53,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:29:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:29:53,001 INFO L87 Difference]: Start difference. First operand 948 states and 1290 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-20 12:29:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:55,552 INFO L93 Difference]: Finished difference Result 2648 states and 3510 transitions. [2022-11-20 12:29:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 12:29:55,553 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-11-20 12:29:55,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:55,565 INFO L225 Difference]: With dead ends: 2648 [2022-11-20 12:29:55,565 INFO L226 Difference]: Without dead ends: 2104 [2022-11-20 12:29:55,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 12:29:55,573 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1007 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:55,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2876 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:29:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2022-11-20 12:29:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 1337. [2022-11-20 12:29:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1190 states have (on average 1.315126050420168) internal successors, (1565), 1208 states have internal predecessors, (1565), 86 states have call successors, (86), 49 states have call predecessors, (86), 59 states have return successors, (127), 80 states have call predecessors, (127), 85 states have call successors, (127) [2022-11-20 12:29:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1778 transitions. [2022-11-20 12:29:55,748 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1778 transitions. Word has length 69 [2022-11-20 12:29:55,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:55,749 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1778 transitions. [2022-11-20 12:29:55,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-20 12:29:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1778 transitions. [2022-11-20 12:29:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 12:29:55,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:55,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:29:55,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:55,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:29:55,962 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash 703078240, now seen corresponding path program 1 times [2022-11-20 12:29:55,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:55,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812308288] [2022-11-20 12:29:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:55,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:56,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:29:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:29:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:56,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 12:29:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:56,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 12:29:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:29:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:56,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812308288] [2022-11-20 12:29:56,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812308288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:56,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337658584] [2022-11-20 12:29:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:56,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:56,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:56,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:56,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:29:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:56,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:29:56,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:29:56,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:29:56,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337658584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:56,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:29:56,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-20 12:29:56,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368290368] [2022-11-20 12:29:56,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:56,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:29:56,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:56,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:29:56,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:29:56,471 INFO L87 Difference]: Start difference. First operand 1337 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 12:29:56,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:56,605 INFO L93 Difference]: Finished difference Result 2060 states and 2716 transitions. [2022-11-20 12:29:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:29:56,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-11-20 12:29:56,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:56,614 INFO L225 Difference]: With dead ends: 2060 [2022-11-20 12:29:56,614 INFO L226 Difference]: Without dead ends: 1215 [2022-11-20 12:29:56,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:29:56,619 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 443 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:56,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 589 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:29:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-11-20 12:29:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1200. [2022-11-20 12:29:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1069 states have (on average 1.3161833489242283) internal successors, (1407), 1086 states have internal predecessors, (1407), 78 states have call successors, (78), 43 states have call predecessors, (78), 51 states have return successors, (113), 71 states have call predecessors, (113), 77 states have call successors, (113) [2022-11-20 12:29:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1598 transitions. [2022-11-20 12:29:56,748 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1598 transitions. Word has length 88 [2022-11-20 12:29:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:56,749 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1598 transitions. [2022-11-20 12:29:56,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 12:29:56,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1598 transitions. [2022-11-20 12:29:56,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 12:29:56,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:56,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:56,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:56,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 12:29:56,970 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1962786176, now seen corresponding path program 1 times [2022-11-20 12:29:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:56,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78251483] [2022-11-20 12:29:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:29:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:29:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:29:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 12:29:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:29:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 12:29:57,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:57,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78251483] [2022-11-20 12:29:57,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78251483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:57,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545942364] [2022-11-20 12:29:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:57,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:57,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:57,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:57,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:29:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:29:57,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:29:57,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:29:57,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545942364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:57,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:29:57,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-20 12:29:57,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892404486] [2022-11-20 12:29:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:57,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:29:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:57,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:29:57,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:29:57,427 INFO L87 Difference]: Start difference. First operand 1200 states and 1598 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 12:29:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:57,552 INFO L93 Difference]: Finished difference Result 1579 states and 2066 transitions. [2022-11-20 12:29:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:29:57,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-11-20 12:29:57,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:57,555 INFO L225 Difference]: With dead ends: 1579 [2022-11-20 12:29:57,555 INFO L226 Difference]: Without dead ends: 253 [2022-11-20 12:29:57,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:29:57,559 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 62 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:57,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 986 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:29:57,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-20 12:29:57,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2022-11-20 12:29:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 225 states have (on average 1.551111111111111) internal successors, (349), 226 states have internal predecessors, (349), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-20 12:29:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 391 transitions. [2022-11-20 12:29:57,583 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 391 transitions. Word has length 103 [2022-11-20 12:29:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:57,583 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 391 transitions. [2022-11-20 12:29:57,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 12:29:57,584 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 391 transitions. [2022-11-20 12:29:57,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:29:57,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:57,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:57,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 12:29:57,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11232e4b-48b9-4c2b-af51-1194701210f4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:57,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 366966274, now seen corresponding path program 1 times [2022-11-20 12:29:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:57,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599611484] [2022-11-20 12:29:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:29:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:29:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:29:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:29:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:29:57,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:57,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599611484] [2022-11-20 12:29:57,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599611484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:57,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:57,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:29:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451798307] [2022-11-20 12:29:57,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:57,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:29:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:29:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:29:57,968 INFO L87 Difference]: Start difference. First operand 253 states and 391 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:29:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:59,614 INFO L93 Difference]: Finished difference Result 581 states and 913 transitions. [2022-11-20 12:29:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:29:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:29:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:59,618 INFO L225 Difference]: With dead ends: 581 [2022-11-20 12:29:59,618 INFO L226 Difference]: Without dead ends: 340 [2022-11-20 12:29:59,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:29:59,621 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 654 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:59,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 496 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:29:59,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-20 12:29:59,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 253. [2022-11-20 12:29:59,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 225 states have (on average 1.5466666666666666) internal successors, (348), 226 states have internal predecessors, (348), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-20 12:29:59,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 390 transitions. [2022-11-20 12:29:59,663 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 390 transitions. Word has length 123 [2022-11-20 12:29:59,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:59,663 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 390 transitions. [2022-11-20 12:29:59,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:29:59,664 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 390 transitions. [2022-11-20 12:29:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:29:59,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:59,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:59,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:29:59,666 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:59,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1796650300, now seen corresponding path program 1 times [2022-11-20 12:29:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:59,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293941225] [2022-11-20 12:29:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:59,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:29:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:29:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:29:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:59,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:29:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:29:59,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:59,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293941225] [2022-11-20 12:29:59,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293941225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:59,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:59,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:29:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041222120] [2022-11-20 12:29:59,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:59,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:29:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:29:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:29:59,886 INFO L87 Difference]: Start difference. First operand 253 states and 390 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:02,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:02,992 INFO L93 Difference]: Finished difference Result 909 states and 1437 transitions. [2022-11-20 12:30:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:30:02,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:30:02,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:02,998 INFO L225 Difference]: With dead ends: 909 [2022-11-20 12:30:02,998 INFO L226 Difference]: Without dead ends: 672 [2022-11-20 12:30:02,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:30:03,000 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 986 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:03,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 965 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 12:30:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-20 12:30:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 499. [2022-11-20 12:30:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 448 states have (on average 1.5602678571428572) internal successors, (699), 450 states have internal predecessors, (699), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-11-20 12:30:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 776 transitions. [2022-11-20 12:30:03,078 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 776 transitions. Word has length 123 [2022-11-20 12:30:03,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:03,079 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 776 transitions. [2022-11-20 12:30:03,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 776 transitions. [2022-11-20 12:30:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:30:03,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:03,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:03,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:30:03,082 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1772752968, now seen corresponding path program 1 times [2022-11-20 12:30:03,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:03,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960592673] [2022-11-20 12:30:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:03,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:30:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:30:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:30:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:30:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:03,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:03,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960592673] [2022-11-20 12:30:03,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960592673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:03,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:03,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:30:03,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240275613] [2022-11-20 12:30:03,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:03,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:30:03,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:03,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:30:03,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:30:03,359 INFO L87 Difference]: Start difference. First operand 499 states and 776 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:07,122 INFO L93 Difference]: Finished difference Result 1497 states and 2366 transitions. [2022-11-20 12:30:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:30:07,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:30:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:07,129 INFO L225 Difference]: With dead ends: 1497 [2022-11-20 12:30:07,130 INFO L226 Difference]: Without dead ends: 1014 [2022-11-20 12:30:07,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:30:07,133 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1009 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:07,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1608 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 12:30:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-11-20 12:30:07,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 728. [2022-11-20 12:30:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 654 states have (on average 1.5535168195718654) internal successors, (1016), 657 states have internal predecessors, (1016), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-20 12:30:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1127 transitions. [2022-11-20 12:30:07,258 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1127 transitions. Word has length 123 [2022-11-20 12:30:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:07,259 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1127 transitions. [2022-11-20 12:30:07,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1127 transitions. [2022-11-20 12:30:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:30:07,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:07,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:07,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:30:07,262 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:07,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:07,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1132920314, now seen corresponding path program 1 times [2022-11-20 12:30:07,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:07,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126134961] [2022-11-20 12:30:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:07,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:30:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:30:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:30:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:30:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:07,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:07,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126134961] [2022-11-20 12:30:07,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126134961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:07,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:07,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:30:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216850171] [2022-11-20 12:30:07,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:07,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:30:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:30:07,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:30:07,543 INFO L87 Difference]: Start difference. First operand 728 states and 1127 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:11,204 INFO L93 Difference]: Finished difference Result 2362 states and 3725 transitions. [2022-11-20 12:30:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:30:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:30:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:11,219 INFO L225 Difference]: With dead ends: 2362 [2022-11-20 12:30:11,220 INFO L226 Difference]: Without dead ends: 1650 [2022-11-20 12:30:11,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:30:11,226 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1073 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:11,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1072 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 12:30:11,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-11-20 12:30:11,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1190. [2022-11-20 12:30:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1070 states have (on average 1.5485981308411214) internal successors, (1657), 1075 states have internal predecessors, (1657), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-11-20 12:30:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1840 transitions. [2022-11-20 12:30:11,488 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1840 transitions. Word has length 123 [2022-11-20 12:30:11,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:11,488 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1840 transitions. [2022-11-20 12:30:11,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1840 transitions. [2022-11-20 12:30:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:30:11,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:11,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:11,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:30:11,493 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1295338308, now seen corresponding path program 1 times [2022-11-20 12:30:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:11,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690386792] [2022-11-20 12:30:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:11,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:11,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:30:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:30:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:30:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:30:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:11,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:11,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690386792] [2022-11-20 12:30:11,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690386792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:11,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:11,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:30:11,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450182638] [2022-11-20 12:30:11,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:11,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:30:11,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:11,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:30:11,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:30:11,799 INFO L87 Difference]: Start difference. First operand 1190 states and 1840 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:15,662 INFO L93 Difference]: Finished difference Result 4034 states and 6338 transitions. [2022-11-20 12:30:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:30:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:30:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:15,682 INFO L225 Difference]: With dead ends: 4034 [2022-11-20 12:30:15,682 INFO L226 Difference]: Without dead ends: 2860 [2022-11-20 12:30:15,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:30:15,689 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1002 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:15,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1606 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 12:30:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-11-20 12:30:16,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2115. [2022-11-20 12:30:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 1903 states have (on average 1.5444035733053074) internal successors, (2939), 1912 states have internal predecessors, (2939), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-11-20 12:30:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 3272 transitions. [2022-11-20 12:30:16,123 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 3272 transitions. Word has length 123 [2022-11-20 12:30:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:16,124 INFO L495 AbstractCegarLoop]: Abstraction has 2115 states and 3272 transitions. [2022-11-20 12:30:16,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:16,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 3272 transitions. [2022-11-20 12:30:16,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:30:16,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:16,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:16,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:30:16,128 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash -11804090, now seen corresponding path program 1 times [2022-11-20 12:30:16,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:16,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284850299] [2022-11-20 12:30:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:16,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:30:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:16,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:30:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:30:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:30:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:16,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:16,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284850299] [2022-11-20 12:30:16,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284850299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:16,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:16,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:30:16,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913891358] [2022-11-20 12:30:16,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:16,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:30:16,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:16,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:30:16,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:30:16,406 INFO L87 Difference]: Start difference. First operand 2115 states and 3272 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:20,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:20,847 INFO L93 Difference]: Finished difference Result 7377 states and 11580 transitions. [2022-11-20 12:30:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:30:20,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:30:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:20,888 INFO L225 Difference]: With dead ends: 7377 [2022-11-20 12:30:20,888 INFO L226 Difference]: Without dead ends: 5278 [2022-11-20 12:30:20,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:30:20,901 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1001 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:20,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1606 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2221 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 12:30:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5278 states. [2022-11-20 12:30:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5278 to 3972. [2022-11-20 12:30:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3576 states have (on average 1.5416666666666667) internal successors, (5513), 3593 states have internal predecessors, (5513), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-11-20 12:30:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 6164 transitions. [2022-11-20 12:30:21,808 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 6164 transitions. Word has length 123 [2022-11-20 12:30:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:21,809 INFO L495 AbstractCegarLoop]: Abstraction has 3972 states and 6164 transitions. [2022-11-20 12:30:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 6164 transitions. [2022-11-20 12:30:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:30:21,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:21,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:21,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:30:21,817 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:21,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:21,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1885692676, now seen corresponding path program 1 times [2022-11-20 12:30:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:21,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86284132] [2022-11-20 12:30:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:30:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:22,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:30:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:22,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:30:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:30:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:22,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86284132] [2022-11-20 12:30:22,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86284132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:22,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:22,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:30:22,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206978584] [2022-11-20 12:30:22,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:22,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:30:22,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:30:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:30:22,167 INFO L87 Difference]: Start difference. First operand 3972 states and 6164 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:27,009 INFO L93 Difference]: Finished difference Result 14064 states and 22126 transitions. [2022-11-20 12:30:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:30:27,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:30:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:27,076 INFO L225 Difference]: With dead ends: 14064 [2022-11-20 12:30:27,077 INFO L226 Difference]: Without dead ends: 10108 [2022-11-20 12:30:27,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:30:27,101 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1000 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:27,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1606 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 12:30:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10108 states. [2022-11-20 12:30:28,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10108 to 7701. [2022-11-20 12:30:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7701 states, 6937 states have (on average 1.5400028830906731) internal successors, (10683), 6970 states have internal predecessors, (10683), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-11-20 12:30:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7701 states to 7701 states and 12024 transitions. [2022-11-20 12:30:28,341 INFO L78 Accepts]: Start accepts. Automaton has 7701 states and 12024 transitions. Word has length 123 [2022-11-20 12:30:28,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:28,342 INFO L495 AbstractCegarLoop]: Abstraction has 7701 states and 12024 transitions. [2022-11-20 12:30:28,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:28,342 INFO L276 IsEmpty]: Start isEmpty. Operand 7701 states and 12024 transitions. [2022-11-20 12:30:28,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:30:28,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:28,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:28,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:30:28,351 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:28,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:28,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1378233722, now seen corresponding path program 1 times [2022-11-20 12:30:28,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:28,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467066670] [2022-11-20 12:30:28,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:28,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:30:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:28,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:30:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:28,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:30:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:30:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:28,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:28,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467066670] [2022-11-20 12:30:28,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467066670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:28,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:28,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:30:28,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739646155] [2022-11-20 12:30:28,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:28,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:30:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:28,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:30:28,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:30:28,615 INFO L87 Difference]: Start difference. First operand 7701 states and 12024 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:35,214 INFO L93 Difference]: Finished difference Result 27439 states and 43412 transitions. [2022-11-20 12:30:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:30:35,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:30:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:35,328 INFO L225 Difference]: With dead ends: 27439 [2022-11-20 12:30:35,328 INFO L226 Difference]: Without dead ends: 19754 [2022-11-20 12:30:35,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:30:35,371 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 999 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:35,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1606 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 12:30:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19754 states. [2022-11-20 12:30:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19754 to 15190. [2022-11-20 12:30:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15190 states, 13690 states have (on average 1.5390065741417094) internal successors, (21069), 13755 states have internal predecessors, (21069), 1045 states have call successors, (1045), 390 states have call predecessors, (1045), 454 states have return successors, (1838), 1108 states have call predecessors, (1838), 1045 states have call successors, (1838) [2022-11-20 12:30:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15190 states to 15190 states and 23952 transitions. [2022-11-20 12:30:38,399 INFO L78 Accepts]: Start accepts. Automaton has 15190 states and 23952 transitions. Word has length 123 [2022-11-20 12:30:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:38,400 INFO L495 AbstractCegarLoop]: Abstraction has 15190 states and 23952 transitions. [2022-11-20 12:30:38,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 15190 states and 23952 transitions. [2022-11-20 12:30:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:30:38,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:38,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:38,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:30:38,418 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1010330308, now seen corresponding path program 1 times [2022-11-20 12:30:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:38,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675079041] [2022-11-20 12:30:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:30:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:30:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:38,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:30:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:30:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:38,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:38,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675079041] [2022-11-20 12:30:38,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675079041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:38,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:38,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:30:38,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657404406] [2022-11-20 12:30:38,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:38,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:30:38,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:30:38,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:30:38,676 INFO L87 Difference]: Start difference. First operand 15190 states and 23952 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:50,538 INFO L93 Difference]: Finished difference Result 61038 states and 96956 transitions. [2022-11-20 12:30:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:30:50,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:30:50,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:51,028 INFO L225 Difference]: With dead ends: 61038 [2022-11-20 12:30:51,028 INFO L226 Difference]: Without dead ends: 45864 [2022-11-20 12:30:51,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:30:51,135 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1289 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:51,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1596 Invalid, 2235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 12:30:51,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45864 states. [2022-11-20 12:30:57,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45864 to 30039. [2022-11-20 12:30:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30039 states, 27131 states have (on average 1.5409310382956765) internal successors, (41807), 27260 states have internal predecessors, (41807), 2005 states have call successors, (2005), 774 states have call predecessors, (2005), 902 states have return successors, (4320), 2132 states have call predecessors, (4320), 2005 states have call successors, (4320) [2022-11-20 12:30:57,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30039 states to 30039 states and 48132 transitions. [2022-11-20 12:30:57,315 INFO L78 Accepts]: Start accepts. Automaton has 30039 states and 48132 transitions. Word has length 123 [2022-11-20 12:30:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:57,316 INFO L495 AbstractCegarLoop]: Abstraction has 30039 states and 48132 transitions. [2022-11-20 12:30:57,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:30:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 30039 states and 48132 transitions. [2022-11-20 12:30:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:30:57,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:57,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:57,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:30:57,353 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:57,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1683565882, now seen corresponding path program 1 times [2022-11-20 12:30:57,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:57,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967500170] [2022-11-20 12:30:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:57,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:30:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:57,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:30:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:30:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:57,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:30:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:57,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:57,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967500170] [2022-11-20 12:30:57,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967500170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:57,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:57,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:30:57,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575834771] [2022-11-20 12:30:57,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:57,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:30:57,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:57,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:30:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:30:57,744 INFO L87 Difference]: Start difference. First operand 30039 states and 48132 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:31:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:31:19,373 INFO L93 Difference]: Finished difference Result 119277 states and 192322 transitions. [2022-11-20 12:31:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:31:19,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-20 12:31:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:31:19,862 INFO L225 Difference]: With dead ends: 119277 [2022-11-20 12:31:19,863 INFO L226 Difference]: Without dead ends: 89254 [2022-11-20 12:31:19,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:31:19,998 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1065 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:31:19,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 1592 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 12:31:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89254 states. [2022-11-20 12:31:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89254 to 59032. [2022-11-20 12:31:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59032 states, 53372 states have (on average 1.5424005096305178) internal successors, (82321), 53629 states have internal predecessors, (82321), 3861 states have call successors, (3861), 1542 states have call predecessors, (3861), 1798 states have return successors, (10678), 4116 states have call predecessors, (10678), 3861 states have call successors, (10678) [2022-11-20 12:31:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59032 states to 59032 states and 96860 transitions. [2022-11-20 12:31:30,767 INFO L78 Accepts]: Start accepts. Automaton has 59032 states and 96860 transitions. Word has length 123 [2022-11-20 12:31:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:31:30,768 INFO L495 AbstractCegarLoop]: Abstraction has 59032 states and 96860 transitions. [2022-11-20 12:31:30,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:31:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 59032 states and 96860 transitions. [2022-11-20 12:31:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:31:30,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:31:30,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:31:30,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:31:30,822 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:31:30,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:31:30,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1554670212, now seen corresponding path program 1 times [2022-11-20 12:31:30,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:31:30,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789285181] [2022-11-20 12:31:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:31:30,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:31:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:31:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:31:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:31:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:31:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:31,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:31:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:31:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:31:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:31:31,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789285181] [2022-11-20 12:31:31,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789285181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:31:31,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:31:31,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:31:31,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169602090] [2022-11-20 12:31:31,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:31:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:31:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:31:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:31:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:31:31,062 INFO L87 Difference]: Start difference. First operand 59032 states and 96860 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)