./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/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_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/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_2d821794-af1b-4183-8943-29c3a60edef9/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 da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 --- 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 09:27:52,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:52,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:52,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:52,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:52,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:52,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:52,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:52,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:52,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:52,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:52,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:52,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:52,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:52,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:52,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:52,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:52,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:52,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:52,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:52,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:52,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:52,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:52,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:52,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:52,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:52,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:52,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:52,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:52,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:52,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:52,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:52,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:52,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:52,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:52,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:52,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:52,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:52,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:52,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:52,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:52,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:52,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:52,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:52,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:52,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:52,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:52,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:52,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:52,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:52,749 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:52,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:52,750 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:52,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:52,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:52,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:52,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:52,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:52,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:52,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:52,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:52,752 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:52,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:52,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:52,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:52,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:52,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:52,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:52,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:52,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:52,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:52,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:52,754 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:52,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:52,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:52,755 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_2d821794-af1b-4183-8943-29c3a60edef9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 [2022-11-20 09:27:53,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:53,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:53,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:53,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:53,042 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:53,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2022-11-20 09:27:56,197 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:56,570 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:56,570 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2022-11-20 09:27:56,599 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/data/77eda45f2/6368abe2eda347109c3730c79bdb1623/FLAGcac2862ab [2022-11-20 09:27:56,619 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/data/77eda45f2/6368abe2eda347109c3730c79bdb1623 [2022-11-20 09:27:56,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:56,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:56,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:56,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:56,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:56,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351564b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:56, skipping insertion in model container [2022-11-20 09:27:56,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:56" (1/1) ... [2022-11-20 09:27:56,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:56,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:57,230 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_2d821794-af1b-4183-8943-29c3a60edef9/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2022-11-20 09:27:57,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:57,389 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:57,512 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_2d821794-af1b-4183-8943-29c3a60edef9/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2022-11-20 09:27:57,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:57,620 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:57,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57 WrapperNode [2022-11-20 09:27:57,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:57,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:57,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:57,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:57,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,747 INFO L138 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1104 [2022-11-20 09:27:57,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:57,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:57,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:57,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:57,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,834 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:57,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:57,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:57,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:57,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:57,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:57,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:57,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-20 09:27:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-20 09:27:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-20 09:27:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-20 09:27:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-20 09:27:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-20 09:27:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-20 09:27:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-20 09:27:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-20 09:27:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-20 09:27:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-20 09:27:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-20 09:27:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-20 09:27:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-20 09:27:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 09:27:57,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 09:27:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 09:27:57,957 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 09:27:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-20 09:27:57,957 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-20 09:27:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-20 09:27:57,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-20 09:27:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-20 09:27:57,957 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-20 09:27:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-20 09:27:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-20 09:27:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-20 09:27:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-20 09:27:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-20 09:27:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-20 09:27:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-20 09:27:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-20 09:27:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-20 09:27:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-20 09:27:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-20 09:27:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-20 09:27:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-20 09:27:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-20 09:27:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-20 09:27:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-20 09:27:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-20 09:27:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-20 09:27:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-20 09:27:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-20 09:27:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-20 09:27:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-20 09:27:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-20 09:27:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-20 09:27:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-20 09:27:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-20 09:27:58,192 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:58,195 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:59,395 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:59,422 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:59,422 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:27:59,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:59 BoogieIcfgContainer [2022-11-20 09:27:59,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:59,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:59,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:59,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:59,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:56" (1/3) ... [2022-11-20 09:27:59,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a31d550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:59, skipping insertion in model container [2022-11-20 09:27:59,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (2/3) ... [2022-11-20 09:27:59,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a31d550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:59, skipping insertion in model container [2022-11-20 09:27:59,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:59" (3/3) ... [2022-11-20 09:27:59,445 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product28.cil.c [2022-11-20 09:27:59,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:59,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:27:59,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:59,564 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;@41f00fe8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:59,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:27:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 430 states have (on average 1.672093023255814) internal successors, (719), 448 states have internal predecessors, (719), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-20 09:27:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 09:27:59,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:59,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:59,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash 861521184, now seen corresponding path program 1 times [2022-11-20 09:27:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:59,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655418834] [2022-11-20 09:27:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:59,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 09:28:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 09:28:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 09:28:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 09:28:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:00,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655418834] [2022-11-20 09:28:00,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655418834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:00,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:00,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:00,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352444023] [2022-11-20 09:28:00,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:00,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:00,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:00,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:00,430 INFO L87 Difference]: Start difference. First operand has 554 states, 430 states have (on average 1.672093023255814) internal successors, (719), 448 states have internal predecessors, (719), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:04,549 INFO L93 Difference]: Finished difference Result 1224 states and 2043 transitions. [2022-11-20 09:28:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:28:04,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-11-20 09:28:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:04,574 INFO L225 Difference]: With dead ends: 1224 [2022-11-20 09:28:04,574 INFO L226 Difference]: Without dead ends: 670 [2022-11-20 09:28:04,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:28:04,588 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 664 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:04,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1638 Invalid, 1798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 09:28:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-20 09:28:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-11-20 09:28:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6619718309859155) internal successors, (708), 443 states have internal predecessors, (708), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 901 transitions. [2022-11-20 09:28:04,794 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 901 transitions. Word has length 63 [2022-11-20 09:28:04,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:04,795 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 901 transitions. [2022-11-20 09:28:04,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:04,796 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 901 transitions. [2022-11-20 09:28:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 09:28:04,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:04,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:04,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:04,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:04,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:04,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2026902989, now seen corresponding path program 1 times [2022-11-20 09:28:04,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:04,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351055265] [2022-11-20 09:28:04,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:04,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:28:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 09:28:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:28:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 09:28:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 09:28:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:05,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351055265] [2022-11-20 09:28:05,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351055265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:05,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:05,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:05,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172739103] [2022-11-20 09:28:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:05,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:05,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:05,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:05,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:05,145 INFO L87 Difference]: Start difference. First operand 549 states and 901 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:09,104 INFO L93 Difference]: Finished difference Result 1202 states and 1987 transitions. [2022-11-20 09:28:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-11-20 09:28:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:09,119 INFO L225 Difference]: With dead ends: 1202 [2022-11-20 09:28:09,120 INFO L226 Difference]: Without dead ends: 670 [2022-11-20 09:28:09,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:09,132 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 656 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:09,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1724 Invalid, 1788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 09:28:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-20 09:28:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-11-20 09:28:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.65962441314554) internal successors, (707), 443 states have internal predecessors, (707), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 900 transitions. [2022-11-20 09:28:09,262 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 900 transitions. Word has length 64 [2022-11-20 09:28:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:09,263 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 900 transitions. [2022-11-20 09:28:09,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 900 transitions. [2022-11-20 09:28:09,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 09:28:09,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:09,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:09,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:28:09,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1702940924, now seen corresponding path program 1 times [2022-11-20 09:28:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:09,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936309744] [2022-11-20 09:28:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:09,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 09:28:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 09:28:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:28:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:28:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:28:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:09,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936309744] [2022-11-20 09:28:09,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936309744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:09,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:09,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:09,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826280636] [2022-11-20 09:28:09,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:09,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:09,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:09,512 INFO L87 Difference]: Start difference. First operand 549 states and 900 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:13,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:13,082 INFO L93 Difference]: Finished difference Result 1202 states and 1986 transitions. [2022-11-20 09:28:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:13,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-11-20 09:28:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:13,089 INFO L225 Difference]: With dead ends: 1202 [2022-11-20 09:28:13,089 INFO L226 Difference]: Without dead ends: 670 [2022-11-20 09:28:13,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:13,093 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 653 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:13,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1717 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 09:28:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-20 09:28:13,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-11-20 09:28:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6572769953051643) internal successors, (706), 443 states have internal predecessors, (706), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 899 transitions. [2022-11-20 09:28:13,174 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 899 transitions. Word has length 65 [2022-11-20 09:28:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:13,174 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 899 transitions. [2022-11-20 09:28:13,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 899 transitions. [2022-11-20 09:28:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 09:28:13,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:13,176 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:13,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:28:13,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:13,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash 145697999, now seen corresponding path program 1 times [2022-11-20 09:28:13,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:13,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176609109] [2022-11-20 09:28:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:28:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 09:28:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 09:28:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 09:28:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 09:28:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:13,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:13,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176609109] [2022-11-20 09:28:13,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176609109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:13,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:13,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689868158] [2022-11-20 09:28:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:13,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:13,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:13,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:13,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:13,461 INFO L87 Difference]: Start difference. First operand 549 states and 899 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:16,949 INFO L93 Difference]: Finished difference Result 1202 states and 1985 transitions. [2022-11-20 09:28:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:16,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-11-20 09:28:16,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:16,956 INFO L225 Difference]: With dead ends: 1202 [2022-11-20 09:28:16,956 INFO L226 Difference]: Without dead ends: 670 [2022-11-20 09:28:16,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:16,960 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 650 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:16,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1721 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 09:28:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-20 09:28:17,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-11-20 09:28:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6549295774647887) internal successors, (705), 443 states have internal predecessors, (705), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 898 transitions. [2022-11-20 09:28:17,040 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 898 transitions. Word has length 66 [2022-11-20 09:28:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:17,040 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 898 transitions. [2022-11-20 09:28:17,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 898 transitions. [2022-11-20 09:28:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 09:28:17,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:17,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:17,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:28:17,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:17,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:17,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2102479656, now seen corresponding path program 1 times [2022-11-20 09:28:17,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:17,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980512981] [2022-11-20 09:28:17,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:17,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 09:28:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 09:28:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:28:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 09:28:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:28:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:17,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:17,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980512981] [2022-11-20 09:28:17,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980512981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:17,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:17,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:17,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183265726] [2022-11-20 09:28:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:17,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:17,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:17,301 INFO L87 Difference]: Start difference. First operand 549 states and 898 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:20,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:20,870 INFO L93 Difference]: Finished difference Result 1202 states and 1984 transitions. [2022-11-20 09:28:20,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:20,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-11-20 09:28:20,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:20,876 INFO L225 Difference]: With dead ends: 1202 [2022-11-20 09:28:20,900 INFO L226 Difference]: Without dead ends: 670 [2022-11-20 09:28:20,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:20,906 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 647 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:20,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1591 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 09:28:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-20 09:28:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2022-11-20 09:28:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6525821596244132) internal successors, (704), 443 states have internal predecessors, (704), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 897 transitions. [2022-11-20 09:28:20,997 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 897 transitions. Word has length 67 [2022-11-20 09:28:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:20,999 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 897 transitions. [2022-11-20 09:28:20,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 897 transitions. [2022-11-20 09:28:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 09:28:21,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:21,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:21,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:28:21,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:21,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:21,004 INFO L85 PathProgramCache]: Analyzing trace with hash 169835, now seen corresponding path program 1 times [2022-11-20 09:28:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:21,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418492742] [2022-11-20 09:28:21,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:21,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:28:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 09:28:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 09:28:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 09:28:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:21,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:21,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418492742] [2022-11-20 09:28:21,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418492742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:21,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:21,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:21,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369394071] [2022-11-20 09:28:21,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:21,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:21,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:21,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:21,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:21,407 INFO L87 Difference]: Start difference. First operand 549 states and 897 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:25,548 INFO L93 Difference]: Finished difference Result 1227 states and 2028 transitions. [2022-11-20 09:28:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:28:25,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-20 09:28:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:25,554 INFO L225 Difference]: With dead ends: 1227 [2022-11-20 09:28:25,554 INFO L226 Difference]: Without dead ends: 699 [2022-11-20 09:28:25,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:28:25,558 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 764 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 3013 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:25,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 2456 Invalid, 3146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [133 Valid, 3013 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 09:28:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-20 09:28:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2022-11-20 09:28:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6471910112359551) internal successors, (733), 462 states have internal predecessors, (733), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 926 transitions. [2022-11-20 09:28:25,636 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 926 transitions. Word has length 68 [2022-11-20 09:28:25,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:25,636 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 926 transitions. [2022-11-20 09:28:25,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 926 transitions. [2022-11-20 09:28:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 09:28:25,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:25,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:25,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:28:25,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:25,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1006007257, now seen corresponding path program 1 times [2022-11-20 09:28:25,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:25,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667675810] [2022-11-20 09:28:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 09:28:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 09:28:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:28:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 09:28:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:26,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:26,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667675810] [2022-11-20 09:28:26,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667675810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:26,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:26,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266665937] [2022-11-20 09:28:26,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:26,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:26,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:26,084 INFO L87 Difference]: Start difference. First operand 569 states and 926 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:29,987 INFO L93 Difference]: Finished difference Result 1211 states and 1979 transitions. [2022-11-20 09:28:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:28:29,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-11-20 09:28:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:29,992 INFO L225 Difference]: With dead ends: 1211 [2022-11-20 09:28:29,993 INFO L226 Difference]: Without dead ends: 699 [2022-11-20 09:28:29,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:28:29,996 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 739 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 2991 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 3118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:29,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 2423 Invalid, 3118 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 2991 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 09:28:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-20 09:28:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2022-11-20 09:28:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6359550561797753) internal successors, (728), 462 states have internal predecessors, (728), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 921 transitions. [2022-11-20 09:28:30,074 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 921 transitions. Word has length 69 [2022-11-20 09:28:30,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:30,074 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 921 transitions. [2022-11-20 09:28:30,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:30,075 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 921 transitions. [2022-11-20 09:28:30,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 09:28:30,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:30,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:30,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:28:30,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:30,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:30,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2086538832, now seen corresponding path program 1 times [2022-11-20 09:28:30,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:30,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936236138] [2022-11-20 09:28:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:30,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:28:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 09:28:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 09:28:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 09:28:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:30,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:30,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936236138] [2022-11-20 09:28:30,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936236138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:30,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:30,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:30,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653706732] [2022-11-20 09:28:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:30,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:30,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:30,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:30,406 INFO L87 Difference]: Start difference. First operand 569 states and 921 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:34,324 INFO L93 Difference]: Finished difference Result 1211 states and 1974 transitions. [2022-11-20 09:28:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:28:34,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-11-20 09:28:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:34,330 INFO L225 Difference]: With dead ends: 1211 [2022-11-20 09:28:34,330 INFO L226 Difference]: Without dead ends: 699 [2022-11-20 09:28:34,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:28:34,333 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 733 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 2966 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:34,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 2423 Invalid, 3093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 2966 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 09:28:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-20 09:28:34,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2022-11-20 09:28:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6247191011235955) internal successors, (723), 462 states have internal predecessors, (723), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 916 transitions. [2022-11-20 09:28:34,409 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 916 transitions. Word has length 70 [2022-11-20 09:28:34,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:34,409 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 916 transitions. [2022-11-20 09:28:34,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 916 transitions. [2022-11-20 09:28:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 09:28:34,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:34,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:34,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:28:34,420 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:34,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash 915012414, now seen corresponding path program 1 times [2022-11-20 09:28:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:34,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556577163] [2022-11-20 09:28:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 09:28:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:28:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 09:28:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 09:28:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:34,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:34,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556577163] [2022-11-20 09:28:34,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556577163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:34,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:34,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011602654] [2022-11-20 09:28:34,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:34,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:34,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:34,777 INFO L87 Difference]: Start difference. First operand 569 states and 916 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:38,681 INFO L93 Difference]: Finished difference Result 1211 states and 1969 transitions. [2022-11-20 09:28:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:28:38,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-11-20 09:28:38,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:38,686 INFO L225 Difference]: With dead ends: 1211 [2022-11-20 09:28:38,687 INFO L226 Difference]: Without dead ends: 699 [2022-11-20 09:28:38,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:28:38,690 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 727 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 2941 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:38,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 2434 Invalid, 3068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 2941 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 09:28:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-20 09:28:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2022-11-20 09:28:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6134831460674157) internal successors, (718), 462 states have internal predecessors, (718), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:38,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 911 transitions. [2022-11-20 09:28:38,763 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 911 transitions. Word has length 71 [2022-11-20 09:28:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:38,763 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 911 transitions. [2022-11-20 09:28:38,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:38,763 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 911 transitions. [2022-11-20 09:28:38,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 09:28:38,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:38,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:38,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:28:38,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2064383585, now seen corresponding path program 1 times [2022-11-20 09:28:38,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:38,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248246064] [2022-11-20 09:28:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:38,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 09:28:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:28:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 09:28:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 09:28:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:39,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:39,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248246064] [2022-11-20 09:28:39,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248246064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:39,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:39,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:39,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627037457] [2022-11-20 09:28:39,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:39,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:39,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:39,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:39,132 INFO L87 Difference]: Start difference. First operand 569 states and 911 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:42,828 INFO L93 Difference]: Finished difference Result 1238 states and 2003 transitions. [2022-11-20 09:28:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:28:42,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-11-20 09:28:42,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:42,834 INFO L225 Difference]: With dead ends: 1238 [2022-11-20 09:28:42,834 INFO L226 Difference]: Without dead ends: 732 [2022-11-20 09:28:42,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:28:42,838 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 710 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:42,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1559 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 09:28:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-11-20 09:28:42,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 573. [2022-11-20 09:28:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 449 states have (on average 1.6080178173719377) internal successors, (722), 466 states have internal predecessors, (722), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 915 transitions. [2022-11-20 09:28:42,918 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 915 transitions. Word has length 71 [2022-11-20 09:28:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:42,919 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 915 transitions. [2022-11-20 09:28:42,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 915 transitions. [2022-11-20 09:28:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 09:28:42,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:42,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:42,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:28:42,921 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:42,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash -439947275, now seen corresponding path program 1 times [2022-11-20 09:28:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:42,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114670933] [2022-11-20 09:28:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:42,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:28:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:28:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:28:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:28:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:43,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:43,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114670933] [2022-11-20 09:28:43,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114670933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:43,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:43,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:43,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515303310] [2022-11-20 09:28:43,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:43,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:43,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:43,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:43,277 INFO L87 Difference]: Start difference. First operand 573 states and 915 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:47,130 INFO L93 Difference]: Finished difference Result 1221 states and 1973 transitions. [2022-11-20 09:28:47,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:28:47,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-11-20 09:28:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:47,136 INFO L225 Difference]: With dead ends: 1221 [2022-11-20 09:28:47,136 INFO L226 Difference]: Without dead ends: 705 [2022-11-20 09:28:47,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:28:47,139 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 721 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:47,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 2423 Invalid, 3043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 09:28:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-11-20 09:28:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 573. [2022-11-20 09:28:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 449 states have (on average 1.5968819599109132) internal successors, (717), 466 states have internal predecessors, (717), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 910 transitions. [2022-11-20 09:28:47,218 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 910 transitions. Word has length 72 [2022-11-20 09:28:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:47,218 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 910 transitions. [2022-11-20 09:28:47,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 910 transitions. [2022-11-20 09:28:47,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 09:28:47,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:47,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:47,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:28:47,220 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:47,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1955223986, now seen corresponding path program 1 times [2022-11-20 09:28:47,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:47,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848622129] [2022-11-20 09:28:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:28:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:28:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 09:28:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:28:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:47,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:47,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848622129] [2022-11-20 09:28:47,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848622129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:47,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:47,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:47,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265905664] [2022-11-20 09:28:47,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:47,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:47,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:47,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:47,480 INFO L87 Difference]: Start difference. First operand 573 states and 910 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:51,020 INFO L93 Difference]: Finished difference Result 1246 states and 2002 transitions. [2022-11-20 09:28:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:28:51,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-11-20 09:28:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:51,025 INFO L225 Difference]: With dead ends: 1246 [2022-11-20 09:28:51,026 INFO L226 Difference]: Without dead ends: 738 [2022-11-20 09:28:51,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:28:51,029 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 713 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:51,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1532 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 09:28:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-11-20 09:28:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 579. [2022-11-20 09:28:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 455 states have (on average 1.589010989010989) internal successors, (723), 472 states have internal predecessors, (723), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:28:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 916 transitions. [2022-11-20 09:28:51,114 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 916 transitions. Word has length 72 [2022-11-20 09:28:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:51,115 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 916 transitions. [2022-11-20 09:28:51,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:28:51,115 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 916 transitions. [2022-11-20 09:28:51,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 09:28:51,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:51,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:51,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:28:51,117 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:51,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash 592207523, now seen corresponding path program 1 times [2022-11-20 09:28:51,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:51,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697708156] [2022-11-20 09:28:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:28:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:28:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 09:28:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 09:28:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:51,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:51,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697708156] [2022-11-20 09:28:51,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697708156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:51,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:51,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:28:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821303871] [2022-11-20 09:28:51,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:51,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:28:51,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:51,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:28:51,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:28:51,522 INFO L87 Difference]: Start difference. First operand 579 states and 916 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:28:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:56,401 INFO L93 Difference]: Finished difference Result 1251 states and 2005 transitions. [2022-11-20 09:28:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:28:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-11-20 09:28:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:56,406 INFO L225 Difference]: With dead ends: 1251 [2022-11-20 09:28:56,407 INFO L226 Difference]: Without dead ends: 743 [2022-11-20 09:28:56,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:56,410 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 736 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 4463 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 4589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 4463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:56,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 4008 Invalid, 4589 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 4463 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 09:28:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-11-20 09:28:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 590. [2022-11-20 09:28:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.5853131749460043) internal successors, (734), 482 states have internal predecessors, (734), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-11-20 09:28:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 931 transitions. [2022-11-20 09:28:56,494 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 931 transitions. Word has length 73 [2022-11-20 09:28:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:56,495 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 931 transitions. [2022-11-20 09:28:56,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:28:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 931 transitions. [2022-11-20 09:28:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 09:28:56,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:56,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:56,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:28:56,497 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:56,498 INFO L85 PathProgramCache]: Analyzing trace with hash -234476092, now seen corresponding path program 1 times [2022-11-20 09:28:56,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:56,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455092866] [2022-11-20 09:28:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:56,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:28:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:28:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:28:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 09:28:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 09:28:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:28:56,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:56,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455092866] [2022-11-20 09:28:56,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455092866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:56,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:56,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:56,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417154375] [2022-11-20 09:28:56,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:56,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:56,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:56,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:56,787 INFO L87 Difference]: Start difference. First operand 590 states and 931 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:00,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:00,522 INFO L93 Difference]: Finished difference Result 1279 states and 2043 transitions. [2022-11-20 09:29:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:29:00,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-11-20 09:29:00,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:00,526 INFO L225 Difference]: With dead ends: 1279 [2022-11-20 09:29:00,526 INFO L226 Difference]: Without dead ends: 765 [2022-11-20 09:29:00,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:00,529 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 709 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:00,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1538 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 09:29:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-11-20 09:29:00,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 598. [2022-11-20 09:29:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 471 states have (on average 1.5732484076433122) internal successors, (741), 490 states have internal predecessors, (741), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-11-20 09:29:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 938 transitions. [2022-11-20 09:29:00,625 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 938 transitions. Word has length 73 [2022-11-20 09:29:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:00,626 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 938 transitions. [2022-11-20 09:29:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 938 transitions. [2022-11-20 09:29:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 09:29:00,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:00,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:00,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:29:00,629 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1222666148, now seen corresponding path program 1 times [2022-11-20 09:29:00,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:00,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214003185] [2022-11-20 09:29:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:00,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:29:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:29:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 09:29:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 09:29:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:29:00,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:00,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214003185] [2022-11-20 09:29:00,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214003185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:00,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:00,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:29:00,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748800461] [2022-11-20 09:29:00,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:00,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:00,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:00,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:00,903 INFO L87 Difference]: Start difference. First operand 598 states and 938 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:04,499 INFO L93 Difference]: Finished difference Result 1317 states and 2081 transitions. [2022-11-20 09:29:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:04,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-11-20 09:29:04,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:04,504 INFO L225 Difference]: With dead ends: 1317 [2022-11-20 09:29:04,505 INFO L226 Difference]: Without dead ends: 716 [2022-11-20 09:29:04,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:04,508 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 647 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:04,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1647 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 09:29:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-20 09:29:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 579. [2022-11-20 09:29:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 455 states have (on average 1.578021978021978) internal successors, (718), 472 states have internal predecessors, (718), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:29:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 911 transitions. [2022-11-20 09:29:04,599 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 911 transitions. Word has length 73 [2022-11-20 09:29:04,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:04,599 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 911 transitions. [2022-11-20 09:29:04,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:04,600 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 911 transitions. [2022-11-20 09:29:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 09:29:04,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:04,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:04,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:29:04,602 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1639184969, now seen corresponding path program 1 times [2022-11-20 09:29:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:04,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724009661] [2022-11-20 09:29:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:04,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 09:29:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:29:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 09:29:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:29:04,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:04,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724009661] [2022-11-20 09:29:04,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724009661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:04,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:04,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:29:04,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320781767] [2022-11-20 09:29:04,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:04,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:04,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:04,891 INFO L87 Difference]: Start difference. First operand 579 states and 911 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:08,473 INFO L93 Difference]: Finished difference Result 1264 states and 2006 transitions. [2022-11-20 09:29:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:29:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-11-20 09:29:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:08,477 INFO L225 Difference]: With dead ends: 1264 [2022-11-20 09:29:08,478 INFO L226 Difference]: Without dead ends: 749 [2022-11-20 09:29:08,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:08,480 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 691 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:08,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1530 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 09:29:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-20 09:29:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 589. [2022-11-20 09:29:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 465 states have (on average 1.5655913978494624) internal successors, (728), 482 states have internal predecessors, (728), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 09:29:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 921 transitions. [2022-11-20 09:29:08,585 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 921 transitions. Word has length 74 [2022-11-20 09:29:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:08,586 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 921 transitions. [2022-11-20 09:29:08,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:29:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 921 transitions. [2022-11-20 09:29:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 09:29:08,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:08,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:08,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:29:08,588 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:08,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash 102707193, now seen corresponding path program 1 times [2022-11-20 09:29:08,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:08,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879658681] [2022-11-20 09:29:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:08,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 09:29:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 09:29:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 09:29:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 09:29:08,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:08,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879658681] [2022-11-20 09:29:08,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879658681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:08,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:08,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:08,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758483890] [2022-11-20 09:29:08,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:08,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:29:08,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:29:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:08,880 INFO L87 Difference]: Start difference. First operand 589 states and 921 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:29:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:14,656 INFO L93 Difference]: Finished difference Result 1842 states and 2964 transitions. [2022-11-20 09:29:14,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:14,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-11-20 09:29:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:14,666 INFO L225 Difference]: With dead ends: 1842 [2022-11-20 09:29:14,666 INFO L226 Difference]: Without dead ends: 1329 [2022-11-20 09:29:14,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:14,670 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 1861 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:14,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1959 Valid, 1169 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 09:29:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-11-20 09:29:14,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1026. [2022-11-20 09:29:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 810 states have (on average 1.5901234567901235) internal successors, (1288), 836 states have internal predecessors, (1288), 170 states have call successors, (170), 47 states have call predecessors, (170), 45 states have return successors, (175), 157 states have call predecessors, (175), 168 states have call successors, (175) [2022-11-20 09:29:14,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1633 transitions. [2022-11-20 09:29:14,859 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1633 transitions. Word has length 75 [2022-11-20 09:29:14,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:14,860 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 1633 transitions. [2022-11-20 09:29:14,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:29:14,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1633 transitions. [2022-11-20 09:29:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 09:29:14,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:14,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:14,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:29:14,866 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:14,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1304070991, now seen corresponding path program 1 times [2022-11-20 09:29:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:14,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633993981] [2022-11-20 09:29:14,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:14,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 09:29:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:29:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 09:29:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 09:29:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:29:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 09:29:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 09:29:15,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:15,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633993981] [2022-11-20 09:29:15,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633993981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:15,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239077300] [2022-11-20 09:29:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:15,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:15,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:15,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:15,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:29:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:16,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:29:16,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:29:16,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:16,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239077300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:16,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:16,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-11-20 09:29:16,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501762560] [2022-11-20 09:29:16,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:16,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:16,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:16,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:29:16,119 INFO L87 Difference]: Start difference. First operand 1026 states and 1633 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:16,576 INFO L93 Difference]: Finished difference Result 2914 states and 4759 transitions. [2022-11-20 09:29:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:16,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-11-20 09:29:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:16,592 INFO L225 Difference]: With dead ends: 2914 [2022-11-20 09:29:16,592 INFO L226 Difference]: Without dead ends: 1965 [2022-11-20 09:29:16,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:29:16,599 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 867 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:16,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1793 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2022-11-20 09:29:16,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1953. [2022-11-20 09:29:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1538 states have (on average 1.605331599479844) internal successors, (2469), 1587 states have internal predecessors, (2469), 327 states have call successors, (327), 89 states have call predecessors, (327), 87 states have return successors, (366), 306 states have call predecessors, (366), 323 states have call successors, (366) [2022-11-20 09:29:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3162 transitions. [2022-11-20 09:29:16,966 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3162 transitions. Word has length 128 [2022-11-20 09:29:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:16,966 INFO L495 AbstractCegarLoop]: Abstraction has 1953 states and 3162 transitions. [2022-11-20 09:29:16,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3162 transitions. [2022-11-20 09:29:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 09:29:16,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:16,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:16,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:17,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 09:29:17,191 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash -486007108, now seen corresponding path program 1 times [2022-11-20 09:29:17,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:17,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497336614] [2022-11-20 09:29:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:29:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 09:29:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:29:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 09:29:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 09:29:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 09:29:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:29:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 09:29:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:17,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497336614] [2022-11-20 09:29:17,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497336614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:17,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522622246] [2022-11-20 09:29:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:17,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:17,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:17,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:17,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:29:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:18,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:29:18,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:29:18,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:18,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522622246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:18,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:18,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2022-11-20 09:29:18,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967677946] [2022-11-20 09:29:18,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:18,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:18,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:18,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:18,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:29:18,544 INFO L87 Difference]: Start difference. First operand 1953 states and 3162 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 09:29:19,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:19,853 INFO L93 Difference]: Finished difference Result 5038 states and 8158 transitions. [2022-11-20 09:29:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:19,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2022-11-20 09:29:19,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:19,876 INFO L225 Difference]: With dead ends: 5038 [2022-11-20 09:29:19,877 INFO L226 Difference]: Without dead ends: 3161 [2022-11-20 09:29:19,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:29:19,887 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 850 mSDsluCounter, 3726 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:19,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 4899 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:29:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2022-11-20 09:29:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3155. [2022-11-20 09:29:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 2474 states have (on average 1.5614389652384801) internal successors, (3863), 2527 states have internal predecessors, (3863), 525 states have call successors, (525), 151 states have call predecessors, (525), 155 states have return successors, (656), 508 states have call predecessors, (656), 517 states have call successors, (656) [2022-11-20 09:29:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 5044 transitions. [2022-11-20 09:29:20,584 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 5044 transitions. Word has length 127 [2022-11-20 09:29:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:20,585 INFO L495 AbstractCegarLoop]: Abstraction has 3155 states and 5044 transitions. [2022-11-20 09:29:20,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 09:29:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 5044 transitions. [2022-11-20 09:29:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 09:29:20,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:20,592 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:20,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:20,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:20,801 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:20,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1145101519, now seen corresponding path program 1 times [2022-11-20 09:29:20,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:20,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551442490] [2022-11-20 09:29:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:20,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 09:29:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:29:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 09:29:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 09:29:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:29:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 09:29:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 09:29:21,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:21,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551442490] [2022-11-20 09:29:21,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551442490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:21,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675536208] [2022-11-20 09:29:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:21,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:21,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:21,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:29:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:21,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 09:29:22,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:22,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675536208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:22,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:22,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-11-20 09:29:22,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747126510] [2022-11-20 09:29:22,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:22,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:22,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:22,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:22,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:29:22,124 INFO L87 Difference]: Start difference. First operand 3155 states and 5044 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:23,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:23,505 INFO L93 Difference]: Finished difference Result 6298 states and 10415 transitions. [2022-11-20 09:29:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-11-20 09:29:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:23,548 INFO L225 Difference]: With dead ends: 6298 [2022-11-20 09:29:23,548 INFO L226 Difference]: Without dead ends: 3219 [2022-11-20 09:29:23,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:29:23,575 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 804 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:23,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 2148 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:29:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-11-20 09:29:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3219. [2022-11-20 09:29:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 2530 states have (on average 1.5648221343873518) internal successors, (3959), 2583 states have internal predecessors, (3959), 525 states have call successors, (525), 159 states have call predecessors, (525), 163 states have return successors, (664), 508 states have call predecessors, (664), 517 states have call successors, (664) [2022-11-20 09:29:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 5148 transitions. [2022-11-20 09:29:24,236 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 5148 transitions. Word has length 128 [2022-11-20 09:29:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:24,237 INFO L495 AbstractCegarLoop]: Abstraction has 3219 states and 5148 transitions. [2022-11-20 09:29:24,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:24,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 5148 transitions. [2022-11-20 09:29:24,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 09:29:24,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:24,244 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:24,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:24,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:24,452 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:24,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:24,453 INFO L85 PathProgramCache]: Analyzing trace with hash 388925211, now seen corresponding path program 1 times [2022-11-20 09:29:24,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:24,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470347690] [2022-11-20 09:29:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:24,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:24,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:29:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 09:29:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:29:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 09:29:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 09:29:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 09:29:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 09:29:25,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:25,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470347690] [2022-11-20 09:29:25,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470347690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:25,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472397655] [2022-11-20 09:29:25,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:25,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:25,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:25,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:25,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:29:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:25,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:25,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 09:29:25,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:25,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472397655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:25,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:25,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-11-20 09:29:25,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192177321] [2022-11-20 09:29:25,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:25,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:25,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:29:25,942 INFO L87 Difference]: Start difference. First operand 3219 states and 5148 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:27,120 INFO L93 Difference]: Finished difference Result 6426 states and 10599 transitions. [2022-11-20 09:29:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:27,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2022-11-20 09:29:27,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:27,140 INFO L225 Difference]: With dead ends: 6426 [2022-11-20 09:29:27,140 INFO L226 Difference]: Without dead ends: 3283 [2022-11-20 09:29:27,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:29:27,154 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 806 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:27,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 2148 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:29:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2022-11-20 09:29:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 3283. [2022-11-20 09:29:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3283 states, 2586 states have (on average 1.5680587780355761) internal successors, (4055), 2639 states have internal predecessors, (4055), 525 states have call successors, (525), 167 states have call predecessors, (525), 171 states have return successors, (672), 508 states have call predecessors, (672), 517 states have call successors, (672) [2022-11-20 09:29:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 5252 transitions. [2022-11-20 09:29:27,823 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 5252 transitions. Word has length 131 [2022-11-20 09:29:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:27,824 INFO L495 AbstractCegarLoop]: Abstraction has 3283 states and 5252 transitions. [2022-11-20 09:29:27,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 5252 transitions. [2022-11-20 09:29:27,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 09:29:27,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:27,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:27,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:28,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 09:29:28,040 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:28,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:28,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2128821267, now seen corresponding path program 1 times [2022-11-20 09:29:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:28,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539897732] [2022-11-20 09:29:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:28,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 09:29:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 09:29:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:29:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 09:29:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:29:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 09:29:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 09:29:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:28,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539897732] [2022-11-20 09:29:28,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539897732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:28,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2973937] [2022-11-20 09:29:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:28,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:28,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:28,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:28,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:29:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:29,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:29,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 09:29:29,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:29,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2973937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:29,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:29,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-11-20 09:29:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807914589] [2022-11-20 09:29:29,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:29,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:29,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:29:29,437 INFO L87 Difference]: Start difference. First operand 3283 states and 5252 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:30,471 INFO L93 Difference]: Finished difference Result 6554 states and 10783 transitions. [2022-11-20 09:29:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2022-11-20 09:29:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:30,493 INFO L225 Difference]: With dead ends: 6554 [2022-11-20 09:29:30,493 INFO L226 Difference]: Without dead ends: 3347 [2022-11-20 09:29:30,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:29:30,509 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 815 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:30,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2148 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:29:30,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2022-11-20 09:29:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347. [2022-11-20 09:29:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 2642 states have (on average 1.5711582134746405) internal successors, (4151), 2695 states have internal predecessors, (4151), 525 states have call successors, (525), 175 states have call predecessors, (525), 179 states have return successors, (680), 508 states have call predecessors, (680), 517 states have call successors, (680) [2022-11-20 09:29:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 5356 transitions. [2022-11-20 09:29:30,968 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 5356 transitions. Word has length 134 [2022-11-20 09:29:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:30,969 INFO L495 AbstractCegarLoop]: Abstraction has 3347 states and 5356 transitions. [2022-11-20 09:29:30,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 5356 transitions. [2022-11-20 09:29:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-20 09:29:30,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:30,976 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:30,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:31,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 09:29:31,186 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:31,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:31,186 INFO L85 PathProgramCache]: Analyzing trace with hash 385245007, now seen corresponding path program 1 times [2022-11-20 09:29:31,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:31,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323809882] [2022-11-20 09:29:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:31,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 09:29:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 09:29:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 09:29:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 09:29:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:32,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 09:29:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:29:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 09:29:32,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:32,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323809882] [2022-11-20 09:29:32,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323809882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:32,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286752380] [2022-11-20 09:29:32,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:32,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:32,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:32,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:32,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:29:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:32,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:32,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 09:29:32,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:32,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286752380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:32,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:32,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-11-20 09:29:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811524029] [2022-11-20 09:29:32,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:32,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:32,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:29:32,554 INFO L87 Difference]: Start difference. First operand 3347 states and 5356 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:33,604 INFO L93 Difference]: Finished difference Result 6682 states and 10967 transitions. [2022-11-20 09:29:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:33,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2022-11-20 09:29:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:33,629 INFO L225 Difference]: With dead ends: 6682 [2022-11-20 09:29:33,629 INFO L226 Difference]: Without dead ends: 3411 [2022-11-20 09:29:33,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:29:33,647 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 813 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:33,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2148 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:29:33,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2022-11-20 09:29:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3411. [2022-11-20 09:29:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3411 states, 2698 states have (on average 1.5741289844329132) internal successors, (4247), 2751 states have internal predecessors, (4247), 525 states have call successors, (525), 183 states have call predecessors, (525), 187 states have return successors, (688), 508 states have call predecessors, (688), 517 states have call successors, (688) [2022-11-20 09:29:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 5460 transitions. [2022-11-20 09:29:34,396 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 5460 transitions. Word has length 137 [2022-11-20 09:29:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:34,397 INFO L495 AbstractCegarLoop]: Abstraction has 3411 states and 5460 transitions. [2022-11-20 09:29:34,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 09:29:34,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 5460 transitions. [2022-11-20 09:29:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 09:29:34,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:34,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:34,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:34,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:34,617 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:34,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:34,618 INFO L85 PathProgramCache]: Analyzing trace with hash -323803479, now seen corresponding path program 1 times [2022-11-20 09:29:34,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:34,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358288829] [2022-11-20 09:29:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:34,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:29:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:29:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:29:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 09:29:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 09:29:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 09:29:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 09:29:35,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:35,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358288829] [2022-11-20 09:29:35,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358288829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:35,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461251583] [2022-11-20 09:29:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:35,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:35,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:35,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:35,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:29:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:36,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:29:36,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:36,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:36,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461251583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:36,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:36,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2022-11-20 09:29:36,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673169515] [2022-11-20 09:29:36,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:36,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:36,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:29:36,436 INFO L87 Difference]: Start difference. First operand 3411 states and 5460 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 09:29:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:39,311 INFO L93 Difference]: Finished difference Result 6898 states and 11097 transitions. [2022-11-20 09:29:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:39,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 140 [2022-11-20 09:29:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:39,331 INFO L225 Difference]: With dead ends: 6898 [2022-11-20 09:29:39,332 INFO L226 Difference]: Without dead ends: 3568 [2022-11-20 09:29:39,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:29:39,346 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1792 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 2814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:39,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 1012 Invalid, 2814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 09:29:39,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-11-20 09:29:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3298. [2022-11-20 09:29:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 2512 states have (on average 1.543391719745223) internal successors, (3877), 2603 states have internal predecessors, (3877), 606 states have call successors, (606), 169 states have call predecessors, (606), 179 states have return successors, (746), 577 states have call predecessors, (746), 598 states have call successors, (746) [2022-11-20 09:29:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 5229 transitions. [2022-11-20 09:29:39,799 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 5229 transitions. Word has length 140 [2022-11-20 09:29:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:39,799 INFO L495 AbstractCegarLoop]: Abstraction has 3298 states and 5229 transitions. [2022-11-20 09:29:39,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 09:29:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 5229 transitions. [2022-11-20 09:29:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 09:29:39,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:39,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:39,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:40,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 09:29:40,014 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:40,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:40,015 INFO L85 PathProgramCache]: Analyzing trace with hash 408163947, now seen corresponding path program 1 times [2022-11-20 09:29:40,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:40,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968010898] [2022-11-20 09:29:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:29:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:29:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 09:29:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 09:29:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 09:29:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 09:29:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 09:29:40,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:40,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968010898] [2022-11-20 09:29:40,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968010898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:40,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519451817] [2022-11-20 09:29:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:40,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:40,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:40,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:41,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:29:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:41,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:29:41,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 09:29:41,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:41,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519451817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:41,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:41,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2022-11-20 09:29:41,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22339854] [2022-11-20 09:29:41,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:41,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:29:41,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:41,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:29:41,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:29:41,609 INFO L87 Difference]: Start difference. First operand 3298 states and 5229 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-20 09:29:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:46,915 INFO L93 Difference]: Finished difference Result 7639 states and 12220 transitions. [2022-11-20 09:29:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:29:46,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 140 [2022-11-20 09:29:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:46,936 INFO L225 Difference]: With dead ends: 7639 [2022-11-20 09:29:46,937 INFO L226 Difference]: Without dead ends: 4419 [2022-11-20 09:29:46,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 09:29:46,953 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 2975 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 4853 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 5511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 4853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:46,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3064 Valid, 2248 Invalid, 5511 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [658 Valid, 4853 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 09:29:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2022-11-20 09:29:47,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 3824. [2022-11-20 09:29:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 2904 states have (on average 1.5457988980716253) internal successors, (4489), 3017 states have internal predecessors, (4489), 696 states have call successors, (696), 191 states have call predecessors, (696), 223 states have return successors, (891), 667 states have call predecessors, (891), 688 states have call successors, (891) [2022-11-20 09:29:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 6076 transitions. [2022-11-20 09:29:47,724 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 6076 transitions. Word has length 140 [2022-11-20 09:29:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:47,725 INFO L495 AbstractCegarLoop]: Abstraction has 3824 states and 6076 transitions. [2022-11-20 09:29:47,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-20 09:29:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 6076 transitions. [2022-11-20 09:29:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-20 09:29:47,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:47,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:47,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:47,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:47,939 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:47,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:47,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1808790549, now seen corresponding path program 1 times [2022-11-20 09:29:47,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:47,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960993106] [2022-11-20 09:29:47,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:47,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:29:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:29:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:29:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 09:29:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 09:29:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 09:29:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 09:29:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 09:29:48,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:48,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960993106] [2022-11-20 09:29:48,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960993106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:48,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491684571] [2022-11-20 09:29:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:48,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:48,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:48,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:48,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:29:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:49,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 09:29:49,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:29:49,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:49,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491684571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:49,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:49,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-11-20 09:29:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893827902] [2022-11-20 09:29:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:49,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:29:49,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:49,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:29:49,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:29:49,438 INFO L87 Difference]: Start difference. First operand 3824 states and 6076 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 09:29:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:55,434 INFO L93 Difference]: Finished difference Result 10329 states and 16779 transitions. [2022-11-20 09:29:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:29:55,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 142 [2022-11-20 09:29:55,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:55,532 INFO L225 Difference]: With dead ends: 10329 [2022-11-20 09:29:55,533 INFO L226 Difference]: Without dead ends: 6583 [2022-11-20 09:29:55,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2022-11-20 09:29:55,549 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 2739 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 6414 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2838 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 7196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 6414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:55,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2838 Valid, 2198 Invalid, 7196 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [782 Valid, 6414 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 09:29:55,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2022-11-20 09:29:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 5961. [2022-11-20 09:29:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 4512 states have (on average 1.551418439716312) internal successors, (7000), 4698 states have internal predecessors, (7000), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 364 states have return successors, (1508), 1048 states have call predecessors, (1508), 1076 states have call successors, (1508) [2022-11-20 09:29:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 9592 transitions. [2022-11-20 09:29:56,336 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 9592 transitions. Word has length 142 [2022-11-20 09:29:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:56,336 INFO L495 AbstractCegarLoop]: Abstraction has 5961 states and 9592 transitions. [2022-11-20 09:29:56,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 09:29:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 9592 transitions. [2022-11-20 09:29:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 09:29:56,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:56,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:56,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:56,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:56,549 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:56,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2003295559, now seen corresponding path program 1 times [2022-11-20 09:29:56,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:56,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398395249] [2022-11-20 09:29:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:56,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:29:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:29:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:29:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:29:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:29:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:29:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 09:29:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:29:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 09:29:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:29:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 09:29:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 09:29:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-20 09:29:57,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:57,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398395249] [2022-11-20 09:29:57,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398395249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:57,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:57,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:29:57,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723070091] [2022-11-20 09:29:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:57,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:29:57,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:57,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:29:57,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:57,336 INFO L87 Difference]: Start difference. First operand 5961 states and 9592 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 09:30:27,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:27,560 INFO L93 Difference]: Finished difference Result 27713 states and 46514 transitions. [2022-11-20 09:30:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 09:30:27,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 147 [2022-11-20 09:30:27,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:27,706 INFO L225 Difference]: With dead ends: 27713 [2022-11-20 09:30:27,706 INFO L226 Difference]: Without dead ends: 21834 [2022-11-20 09:30:27,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2022-11-20 09:30:27,748 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 6319 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 7102 mSolverCounterSat, 3952 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6379 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 11054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3952 IncrementalHoareTripleChecker+Valid, 7102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:27,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6379 Valid, 2059 Invalid, 11054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3952 Valid, 7102 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2022-11-20 09:30:27,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21834 states. [2022-11-20 09:30:29,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21834 to 6005. [2022-11-20 09:30:29,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6005 states, 4544 states have (on average 1.5484154929577465) internal successors, (7036), 4726 states have internal predecessors, (7036), 1096 states have call successors, (1096), 291 states have call predecessors, (1096), 364 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-11-20 09:30:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 9626 transitions. [2022-11-20 09:30:29,509 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 9626 transitions. Word has length 147 [2022-11-20 09:30:29,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:29,509 INFO L495 AbstractCegarLoop]: Abstraction has 6005 states and 9626 transitions. [2022-11-20 09:30:29,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 09:30:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 9626 transitions. [2022-11-20 09:30:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 09:30:29,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:29,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:29,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 09:30:29,515 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:29,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1632140215, now seen corresponding path program 1 times [2022-11-20 09:30:29,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:29,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950820371] [2022-11-20 09:30:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:29,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:30:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:29,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:30:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:29,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:30:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:30:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:30:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:30:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:30:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 09:30:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:30:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 09:30:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 09:30:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 09:30:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 09:30:30,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:30,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950820371] [2022-11-20 09:30:30,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950820371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:30,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059925315] [2022-11-20 09:30:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:30,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:30,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:30,470 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:30,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:30:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:30:30,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:30:31,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:31,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059925315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:31,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:30:31,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-11-20 09:30:31,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333201422] [2022-11-20 09:30:31,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:31,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:30:31,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:31,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:30:31,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:30:31,009 INFO L87 Difference]: Start difference. First operand 6005 states and 9626 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 09:30:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:32,829 INFO L93 Difference]: Finished difference Result 6142 states and 9910 transitions. [2022-11-20 09:30:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:30:32,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2022-11-20 09:30:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:32,860 INFO L225 Difference]: With dead ends: 6142 [2022-11-20 09:30:32,861 INFO L226 Difference]: Without dead ends: 6140 [2022-11-20 09:30:32,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:30:32,865 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 361 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:32,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 3940 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:30:32,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6140 states. [2022-11-20 09:30:34,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6140 to 6005. [2022-11-20 09:30:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6005 states, 4544 states have (on average 1.5418133802816902) internal successors, (7006), 4726 states have internal predecessors, (7006), 1096 states have call successors, (1096), 291 states have call predecessors, (1096), 364 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-11-20 09:30:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 9596 transitions. [2022-11-20 09:30:34,247 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 9596 transitions. Word has length 147 [2022-11-20 09:30:34,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:34,248 INFO L495 AbstractCegarLoop]: Abstraction has 6005 states and 9596 transitions. [2022-11-20 09:30:34,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 09:30:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 9596 transitions. [2022-11-20 09:30:34,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-20 09:30:34,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:34,254 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:30:34,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:34,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 09:30:34,462 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1721447028, now seen corresponding path program 1 times [2022-11-20 09:30:34,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:34,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460076571] [2022-11-20 09:30:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:34,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:34,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:30:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:30:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:30:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:30:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:30:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 09:30:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 09:30:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:30:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 09:30:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 09:30:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 09:30:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 09:30:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 09:30:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-20 09:30:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 09:30:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-20 09:30:35,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:35,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460076571] [2022-11-20 09:30:35,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460076571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:35,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:35,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:30:35,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060600187] [2022-11-20 09:30:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:30:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:30:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:30:35,269 INFO L87 Difference]: Start difference. First operand 6005 states and 9596 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 09:30:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:55,693 INFO L93 Difference]: Finished difference Result 23718 states and 39980 transitions. [2022-11-20 09:30:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:30:55,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 170 [2022-11-20 09:30:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:55,824 INFO L225 Difference]: With dead ends: 23718 [2022-11-20 09:30:55,825 INFO L226 Difference]: Without dead ends: 17791 [2022-11-20 09:30:55,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2022-11-20 09:30:55,872 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 4084 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 5227 mSolverCounterSat, 1823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4260 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 7050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1823 IncrementalHoareTripleChecker+Valid, 5227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:55,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4260 Valid, 2026 Invalid, 7050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1823 Valid, 5227 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-20 09:30:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17791 states. [2022-11-20 09:30:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17791 to 6029. [2022-11-20 09:30:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 4568 states have (on average 1.5389667250437828) internal successors, (7030), 4750 states have internal predecessors, (7030), 1096 states have call successors, (1096), 291 states have call predecessors, (1096), 364 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-11-20 09:30:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9620 transitions. [2022-11-20 09:30:57,970 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9620 transitions. Word has length 170 [2022-11-20 09:30:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:57,971 INFO L495 AbstractCegarLoop]: Abstraction has 6029 states and 9620 transitions. [2022-11-20 09:30:57,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 09:30:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9620 transitions. [2022-11-20 09:30:57,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-20 09:30:57,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:57,978 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:30:57,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 09:30:57,978 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash 663422447, now seen corresponding path program 1 times [2022-11-20 09:30:57,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:57,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982473873] [2022-11-20 09:30:57,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:57,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:30:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:30:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:30:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:30:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:30:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:30:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:30:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 09:30:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 09:30:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 09:30:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 09:30:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 09:30:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 09:30:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:30:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-20 09:30:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-20 09:30:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-20 09:30:58,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:58,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982473873] [2022-11-20 09:30:58,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982473873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:58,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161921238] [2022-11-20 09:30:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:58,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:58,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:58,737 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:58,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:30:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:59,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:30:59,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 09:30:59,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:30:59,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161921238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:59,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:30:59,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-20 09:30:59,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667757048] [2022-11-20 09:30:59,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:59,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:30:59,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:30:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:30:59,117 INFO L87 Difference]: Start difference. First operand 6029 states and 9620 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:31:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:01,302 INFO L93 Difference]: Finished difference Result 12214 states and 19710 transitions. [2022-11-20 09:31:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 176 [2022-11-20 09:31:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:01,337 INFO L225 Difference]: With dead ends: 12214 [2022-11-20 09:31:01,337 INFO L226 Difference]: Without dead ends: 6263 [2022-11-20 09:31:01,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:31:01,365 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 213 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:01,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2373 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:31:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2022-11-20 09:31:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6263. [2022-11-20 09:31:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6263 states, 4796 states have (on average 1.5571309424520434) internal successors, (7468), 4978 states have internal predecessors, (7468), 1096 states have call successors, (1096), 297 states have call predecessors, (1096), 370 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-11-20 09:31:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 10058 transitions. [2022-11-20 09:31:03,163 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 10058 transitions. Word has length 176 [2022-11-20 09:31:03,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:03,164 INFO L495 AbstractCegarLoop]: Abstraction has 6263 states and 10058 transitions. [2022-11-20 09:31:03,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:31:03,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 10058 transitions. [2022-11-20 09:31:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-20 09:31:03,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:03,171 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:03,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:03,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:03,379 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:03,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash 620224811, now seen corresponding path program 1 times [2022-11-20 09:31:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:03,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547065228] [2022-11-20 09:31:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:03,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:31:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:03,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:31:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:31:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:31:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:31:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:31:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:31:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 09:31:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:31:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 09:31:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 09:31:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 09:31:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-20 09:31:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 09:31:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-20 09:31:04,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:04,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547065228] [2022-11-20 09:31:04,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547065228] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:04,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551984274] [2022-11-20 09:31:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:04,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:04,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:04,074 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:04,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:31:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:04,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:04,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 09:31:04,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:04,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551984274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:04,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:04,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-20 09:31:04,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234585963] [2022-11-20 09:31:04,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:04,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:04,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:31:04,446 INFO L87 Difference]: Start difference. First operand 6263 states and 10058 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:31:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:06,142 INFO L93 Difference]: Finished difference Result 12682 states and 20574 transitions. [2022-11-20 09:31:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:06,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 181 [2022-11-20 09:31:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:06,175 INFO L225 Difference]: With dead ends: 12682 [2022-11-20 09:31:06,176 INFO L226 Difference]: Without dead ends: 6497 [2022-11-20 09:31:06,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:31:06,204 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 211 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:06,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2373 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:31:06,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6497 states. [2022-11-20 09:31:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6497 to 6497. [2022-11-20 09:31:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6497 states, 5024 states have (on average 1.5736464968152866) internal successors, (7906), 5206 states have internal predecessors, (7906), 1096 states have call successors, (1096), 303 states have call predecessors, (1096), 376 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-11-20 09:31:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6497 states to 6497 states and 10496 transitions. [2022-11-20 09:31:08,208 INFO L78 Accepts]: Start accepts. Automaton has 6497 states and 10496 transitions. Word has length 181 [2022-11-20 09:31:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:08,209 INFO L495 AbstractCegarLoop]: Abstraction has 6497 states and 10496 transitions. [2022-11-20 09:31:08,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:31:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6497 states and 10496 transitions. [2022-11-20 09:31:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-20 09:31:08,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:08,213 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:08,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-20 09:31:08,414 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:08,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:08,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1373818149, now seen corresponding path program 1 times [2022-11-20 09:31:08,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:08,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560025179] [2022-11-20 09:31:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:08,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:31:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:31:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:31:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:31:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:31:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:31:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:31:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:31:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 09:31:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 09:31:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 09:31:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 09:31:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-20 09:31:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-20 09:31:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 09:31:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:09,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560025179] [2022-11-20 09:31:09,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560025179] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:09,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034253088] [2022-11-20 09:31:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:09,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:09,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:09,051 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:09,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:31:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:09,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:31:09,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:09,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034253088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:09,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:09,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-20 09:31:09,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570782546] [2022-11-20 09:31:09,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:09,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:09,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:09,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:31:09,401 INFO L87 Difference]: Start difference. First operand 6497 states and 10496 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:31:11,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:11,087 INFO L93 Difference]: Finished difference Result 13150 states and 21438 transitions. [2022-11-20 09:31:11,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:11,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 185 [2022-11-20 09:31:11,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:11,115 INFO L225 Difference]: With dead ends: 13150 [2022-11-20 09:31:11,115 INFO L226 Difference]: Without dead ends: 6731 [2022-11-20 09:31:11,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:31:11,133 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 209 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:11,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2373 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:31:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6731 states. [2022-11-20 09:31:12,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6731 to 6731. [2022-11-20 09:31:12,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6731 states, 5252 states have (on average 1.5887281035795888) internal successors, (8344), 5434 states have internal predecessors, (8344), 1096 states have call successors, (1096), 309 states have call predecessors, (1096), 382 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-11-20 09:31:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6731 states to 6731 states and 10934 transitions. [2022-11-20 09:31:12,777 INFO L78 Accepts]: Start accepts. Automaton has 6731 states and 10934 transitions. Word has length 185 [2022-11-20 09:31:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:12,778 INFO L495 AbstractCegarLoop]: Abstraction has 6731 states and 10934 transitions. [2022-11-20 09:31:12,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:31:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6731 states and 10934 transitions. [2022-11-20 09:31:12,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 09:31:12,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:12,782 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:12,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:12,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-20 09:31:12,982 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:12,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:12,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1287445809, now seen corresponding path program 1 times [2022-11-20 09:31:12,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:12,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049015653] [2022-11-20 09:31:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:12,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:31:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:31:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:31:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:31:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:31:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:31:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:31:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:31:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:31:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 09:31:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 09:31:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 09:31:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 09:31:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 09:31:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 09:31:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:13,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049015653] [2022-11-20 09:31:13,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049015653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:13,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709433856] [2022-11-20 09:31:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:13,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:13,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:13,627 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:13,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:31:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:13,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:31:13,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 09:31:14,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:14,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709433856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:14,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:14,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-20 09:31:14,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759149375] [2022-11-20 09:31:14,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:14,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:14,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:31:14,049 INFO L87 Difference]: Start difference. First operand 6731 states and 10934 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:31:15,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:15,825 INFO L93 Difference]: Finished difference Result 13618 states and 22302 transitions. [2022-11-20 09:31:15,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:15,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 188 [2022-11-20 09:31:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:15,851 INFO L225 Difference]: With dead ends: 13618 [2022-11-20 09:31:15,851 INFO L226 Difference]: Without dead ends: 6965 [2022-11-20 09:31:15,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:31:15,872 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 207 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:15,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2373 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:31:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6965 states. [2022-11-20 09:31:18,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6965 to 6965. [2022-11-20 09:31:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6965 states, 5480 states have (on average 1.6025547445255475) internal successors, (8782), 5662 states have internal predecessors, (8782), 1096 states have call successors, (1096), 315 states have call predecessors, (1096), 388 states have return successors, (1494), 1060 states have call predecessors, (1494), 1088 states have call successors, (1494) [2022-11-20 09:31:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6965 states to 6965 states and 11372 transitions. [2022-11-20 09:31:18,236 INFO L78 Accepts]: Start accepts. Automaton has 6965 states and 11372 transitions. Word has length 188 [2022-11-20 09:31:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:18,237 INFO L495 AbstractCegarLoop]: Abstraction has 6965 states and 11372 transitions. [2022-11-20 09:31:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 09:31:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 6965 states and 11372 transitions. [2022-11-20 09:31:18,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-20 09:31:18,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:18,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:18,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:18,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:18,455 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:18,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:18,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1681263421, now seen corresponding path program 1 times [2022-11-20 09:31:18,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:18,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304783545] [2022-11-20 09:31:18,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:18,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:31:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:31:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:31:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:31:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:31:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:31:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:31:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:31:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:31:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:31:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:31:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 09:31:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:31:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-20 09:31:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:31:19,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:19,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304783545] [2022-11-20 09:31:19,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304783545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:19,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391582668] [2022-11-20 09:31:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:19,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:19,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:19,251 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:19,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 09:31:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:19,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 09:31:19,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-20 09:31:19,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:19,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391582668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:19,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:19,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2022-11-20 09:31:19,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570600090] [2022-11-20 09:31:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:19,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:31:19,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:31:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:31:19,871 INFO L87 Difference]: Start difference. First operand 6965 states and 11372 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 09:31:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:26,961 INFO L93 Difference]: Finished difference Result 21710 states and 36126 transitions. [2022-11-20 09:31:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:31:26,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 190 [2022-11-20 09:31:26,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:27,041 INFO L225 Difference]: With dead ends: 21710 [2022-11-20 09:31:27,042 INFO L226 Difference]: Without dead ends: 11508 [2022-11-20 09:31:27,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-11-20 09:31:27,089 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1981 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 4471 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 4960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 4471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:27,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 2481 Invalid, 4960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 4471 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 09:31:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11508 states. [2022-11-20 09:31:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11508 to 11152. [2022-11-20 09:31:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11152 states, 8652 states have (on average 1.6040221914008321) internal successors, (13878), 9007 states have internal predecessors, (13878), 1829 states have call successors, (1829), 497 states have call predecessors, (1829), 670 states have return successors, (2564), 1790 states have call predecessors, (2564), 1821 states have call successors, (2564) [2022-11-20 09:31:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11152 states to 11152 states and 18271 transitions. [2022-11-20 09:31:30,298 INFO L78 Accepts]: Start accepts. Automaton has 11152 states and 18271 transitions. Word has length 190 [2022-11-20 09:31:30,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:30,299 INFO L495 AbstractCegarLoop]: Abstraction has 11152 states and 18271 transitions. [2022-11-20 09:31:30,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 09:31:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 11152 states and 18271 transitions. [2022-11-20 09:31:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-20 09:31:30,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:30,309 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:30,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:30,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:30,509 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:30,510 INFO L85 PathProgramCache]: Analyzing trace with hash -429588659, now seen corresponding path program 1 times [2022-11-20 09:31:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:30,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303227583] [2022-11-20 09:31:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:30,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:31:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:31:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 09:31:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:31:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:31:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:31:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:31:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:31:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:31:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:31:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:31:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 09:31:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 09:31:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-20 09:31:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-20 09:31:30,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:30,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303227583] [2022-11-20 09:31:30,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303227583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:30,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:30,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:31:30,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360057111] [2022-11-20 09:31:30,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:30,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:31:30,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:30,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:31:30,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:31:30,994 INFO L87 Difference]: Start difference. First operand 11152 states and 18271 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 09:31:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:42,972 INFO L93 Difference]: Finished difference Result 25096 states and 41930 transitions. [2022-11-20 09:31:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:31:42,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 190 [2022-11-20 09:31:42,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:43,034 INFO L225 Difference]: With dead ends: 25096 [2022-11-20 09:31:43,035 INFO L226 Difference]: Without dead ends: 13894 [2022-11-20 09:31:43,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:31:43,067 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 889 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 2975 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:43,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1506 Invalid, 3136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [161 Valid, 2975 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 09:31:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13894 states. [2022-11-20 09:31:45,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13894 to 11174. [2022-11-20 09:31:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11174 states, 8674 states have (on average 1.5975328568134655) internal successors, (13857), 9029 states have internal predecessors, (13857), 1829 states have call successors, (1829), 497 states have call predecessors, (1829), 670 states have return successors, (2564), 1790 states have call predecessors, (2564), 1821 states have call successors, (2564) [2022-11-20 09:31:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11174 states to 11174 states and 18250 transitions. [2022-11-20 09:31:45,944 INFO L78 Accepts]: Start accepts. Automaton has 11174 states and 18250 transitions. Word has length 190 [2022-11-20 09:31:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:45,944 INFO L495 AbstractCegarLoop]: Abstraction has 11174 states and 18250 transitions. [2022-11-20 09:31:45,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 09:31:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 11174 states and 18250 transitions. [2022-11-20 09:31:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-20 09:31:45,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:45,958 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:45,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 09:31:45,958 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:45,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:45,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2105572543, now seen corresponding path program 1 times [2022-11-20 09:31:45,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:45,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880633458] [2022-11-20 09:31:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:45,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:31:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:31:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 09:31:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:31:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:31:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:31:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:31:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:31:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:31:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:31:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:31:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 09:31:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-20 09:31:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-20 09:31:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:31:46,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:46,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880633458] [2022-11-20 09:31:46,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880633458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:46,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725414497] [2022-11-20 09:31:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:46,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:46,601 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:46,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 09:31:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:46,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:31:46,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-20 09:31:47,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:47,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725414497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:47,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:47,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 19 [2022-11-20 09:31:47,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867781173] [2022-11-20 09:31:47,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:47,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:31:47,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:47,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:31:47,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:31:47,039 INFO L87 Difference]: Start difference. First operand 11174 states and 18250 transitions. Second operand has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 09:31:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:50,136 INFO L93 Difference]: Finished difference Result 21838 states and 35793 transitions. [2022-11-20 09:31:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:31:50,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 196 [2022-11-20 09:31:50,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:50,189 INFO L225 Difference]: With dead ends: 21838 [2022-11-20 09:31:50,189 INFO L226 Difference]: Without dead ends: 10379 [2022-11-20 09:31:50,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:31:50,360 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 50 mSDsluCounter, 4196 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 5051 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:50,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 5051 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:31:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2022-11-20 09:31:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 10379. [2022-11-20 09:31:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 8114 states have (on average 1.6205324131131378) internal successors, (13149), 8444 states have internal predecessors, (13149), 1644 states have call successors, (1644), 473 states have call predecessors, (1644), 620 states have return successors, (2209), 1584 states have call predecessors, (2209), 1636 states have call successors, (2209) [2022-11-20 09:31:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 17002 transitions. [2022-11-20 09:31:53,040 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 17002 transitions. Word has length 196 [2022-11-20 09:31:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:53,040 INFO L495 AbstractCegarLoop]: Abstraction has 10379 states and 17002 transitions. [2022-11-20 09:31:53,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 09:31:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 17002 transitions. [2022-11-20 09:31:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-11-20 09:31:53,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:53,051 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:53,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:53,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 09:31:53,254 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1406658870, now seen corresponding path program 1 times [2022-11-20 09:31:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:53,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672378238] [2022-11-20 09:31:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:53,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:31:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:31:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:31:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:31:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:31:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:31:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:31:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:31:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:31:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:31:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:31:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:31:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 09:31:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:31:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:31:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:31:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:31:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:31:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:31:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:31:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:31:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:31:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:31:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-11-20 09:31:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:31:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:31:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 09:31:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 09:31:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:31:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 09:31:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 09:31:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 09:31:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:31:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 09:31:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 09:31:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 09:31:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 09:31:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-11-20 09:31:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:31:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-11-20 09:31:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-11-20 09:31:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:31:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-11-20 09:31:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-11-20 09:31:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 84 proven. 152 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2022-11-20 09:31:54,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:54,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672378238] [2022-11-20 09:31:54,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672378238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:54,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042138837] [2022-11-20 09:31:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:54,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:54,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:54,803 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:54,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 09:31:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:55,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 4094 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:31:55,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-20 09:31:55,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:31:55,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042138837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:55,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:31:55,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [18] total 19 [2022-11-20 09:31:55,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274330363] [2022-11-20 09:31:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:31:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:31:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:31:55,624 INFO L87 Difference]: Start difference. First operand 10379 states and 17002 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-20 09:32:00,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:00,078 INFO L93 Difference]: Finished difference Result 21295 states and 35310 transitions. [2022-11-20 09:32:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:32:00,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 552 [2022-11-20 09:32:00,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:00,140 INFO L225 Difference]: With dead ends: 21295 [2022-11-20 09:32:00,140 INFO L226 Difference]: Without dead ends: 15837 [2022-11-20 09:32:00,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 674 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:32:00,167 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 853 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:00,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1769 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:32:00,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15837 states. [2022-11-20 09:32:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15837 to 15835. [2022-11-20 09:32:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15835 states, 12322 states have (on average 1.6195422820970622) internal successors, (19956), 12851 states have internal predecessors, (19956), 2570 states have call successors, (2570), 718 states have call predecessors, (2570), 942 states have return successors, (3624), 2511 states have call predecessors, (3624), 2558 states have call successors, (3624) [2022-11-20 09:32:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15835 states to 15835 states and 26150 transitions. [2022-11-20 09:32:05,102 INFO L78 Accepts]: Start accepts. Automaton has 15835 states and 26150 transitions. Word has length 552 [2022-11-20 09:32:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:05,106 INFO L495 AbstractCegarLoop]: Abstraction has 15835 states and 26150 transitions. [2022-11-20 09:32:05,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-20 09:32:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 15835 states and 26150 transitions. [2022-11-20 09:32:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-11-20 09:32:05,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:05,124 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:32:05,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:05,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 09:32:05,338 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:05,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1253831751, now seen corresponding path program 1 times [2022-11-20 09:32:05,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:05,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565060442] [2022-11-20 09:32:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:05,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:32:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:05,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:32:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:32:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:32:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:32:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:32:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:32:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:32:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:32:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:32:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:32:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:32:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:32:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 09:32:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:32:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:32:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:32:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:32:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:32:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:32:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:32:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:32:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:32:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:32:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-11-20 09:32:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:32:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:32:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 09:32:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 09:32:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:32:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 09:32:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 09:32:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 09:32:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 09:32:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:32:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 09:32:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 09:32:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 09:32:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-11-20 09:32:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:32:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-11-20 09:32:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-11-20 09:32:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-11-20 09:32:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-11-20 09:32:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 84 proven. 152 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2022-11-20 09:32:06,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:06,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565060442] [2022-11-20 09:32:06,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565060442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:06,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947714190] [2022-11-20 09:32:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:06,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:06,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:06,768 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:06,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 09:32:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:07,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 4095 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:07,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-20 09:32:07,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:07,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947714190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:07,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:32:07,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2022-11-20 09:32:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404975079] [2022-11-20 09:32:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:07,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:07,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:07,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:07,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:32:07,513 INFO L87 Difference]: Start difference. First operand 15835 states and 26150 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 09:32:11,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:11,934 INFO L93 Difference]: Finished difference Result 31733 states and 52942 transitions. [2022-11-20 09:32:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 553 [2022-11-20 09:32:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:11,993 INFO L225 Difference]: With dead ends: 31733 [2022-11-20 09:32:11,993 INFO L226 Difference]: Without dead ends: 15970 [2022-11-20 09:32:12,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 674 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:32:12,038 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 38 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:12,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2459 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15970 states. [2022-11-20 09:32:16,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15970 to 15970. [2022-11-20 09:32:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15970 states, 12442 states have (on average 1.6208005143867545) internal successors, (20166), 12971 states have internal predecessors, (20166), 2570 states have call successors, (2570), 733 states have call predecessors, (2570), 957 states have return successors, (3624), 2511 states have call predecessors, (3624), 2558 states have call successors, (3624) [2022-11-20 09:32:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15970 states to 15970 states and 26360 transitions. [2022-11-20 09:32:16,478 INFO L78 Accepts]: Start accepts. Automaton has 15970 states and 26360 transitions. Word has length 553 [2022-11-20 09:32:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:16,478 INFO L495 AbstractCegarLoop]: Abstraction has 15970 states and 26360 transitions. [2022-11-20 09:32:16,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 09:32:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 15970 states and 26360 transitions. [2022-11-20 09:32:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-11-20 09:32:16,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:16,493 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:32:16,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:16,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 09:32:16,694 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:16,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1347188903, now seen corresponding path program 1 times [2022-11-20 09:32:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:16,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080679951] [2022-11-20 09:32:16,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:32:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:32:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:32:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:32:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:32:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:32:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:32:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:32:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:32:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:32:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:32:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:32:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:32:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 09:32:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:32:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:32:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:32:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:32:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:32:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:32:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:32:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:32:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:32:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:32:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-11-20 09:32:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:32:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:32:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:32:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 09:32:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:32:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 09:32:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 09:32:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 09:32:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 09:32:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 09:32:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 09:32:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 09:32:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 09:32:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-11-20 09:32:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:32:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-11-20 09:32:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-11-20 09:32:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-11-20 09:32:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-11-20 09:32:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 86 proven. 151 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2022-11-20 09:32:18,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:18,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080679951] [2022-11-20 09:32:18,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080679951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:18,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690373467] [2022-11-20 09:32:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:18,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:18,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:18,071 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:18,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 09:32:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:18,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 4096 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:32:18,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-20 09:32:18,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:18,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690373467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:18,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:32:18,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2022-11-20 09:32:18,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438840572] [2022-11-20 09:32:18,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:18,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:18,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:18,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:18,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:32:18,811 INFO L87 Difference]: Start difference. First operand 15970 states and 26360 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 09:32:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:23,822 INFO L93 Difference]: Finished difference Result 32003 states and 53302 transitions. [2022-11-20 09:32:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:23,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 554 [2022-11-20 09:32:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:23,895 INFO L225 Difference]: With dead ends: 32003 [2022-11-20 09:32:23,895 INFO L226 Difference]: Without dead ends: 16105 [2022-11-20 09:32:23,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 672 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:32:23,949 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 36 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:23,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2459 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16105 states. [2022-11-20 09:32:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16105 to 16105. [2022-11-20 09:32:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16105 states, 12562 states have (on average 1.6220347078490687) internal successors, (20376), 13091 states have internal predecessors, (20376), 2570 states have call successors, (2570), 748 states have call predecessors, (2570), 972 states have return successors, (3624), 2511 states have call predecessors, (3624), 2558 states have call successors, (3624) [2022-11-20 09:32:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16105 states to 16105 states and 26570 transitions. [2022-11-20 09:32:28,362 INFO L78 Accepts]: Start accepts. Automaton has 16105 states and 26570 transitions. Word has length 554 [2022-11-20 09:32:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:28,363 INFO L495 AbstractCegarLoop]: Abstraction has 16105 states and 26570 transitions. [2022-11-20 09:32:28,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-20 09:32:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 16105 states and 26570 transitions. [2022-11-20 09:32:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-11-20 09:32:28,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:28,384 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:32:28,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:28,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-20 09:32:28,595 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:28,596 INFO L85 PathProgramCache]: Analyzing trace with hash 505079203, now seen corresponding path program 1 times [2022-11-20 09:32:28,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:28,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025260193] [2022-11-20 09:32:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:28,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:32:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:32:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:32:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:32:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:32:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:32:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:32:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:32:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:32:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:32:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:32:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:32:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:32:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 09:32:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:32:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:32:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:32:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 09:32:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 09:32:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 09:32:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:32:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 09:32:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 09:32:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 09:32:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-11-20 09:32:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:32:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:32:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 09:32:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:32:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:32:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 09:32:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 09:32:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 09:32:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 09:32:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 09:32:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 09:32:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 09:32:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 09:32:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-11-20 09:32:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:32:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-11-20 09:32:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-11-20 09:32:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:32:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-11-20 09:32:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-11-20 09:32:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 88 proven. 150 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2022-11-20 09:32:30,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:30,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025260193] [2022-11-20 09:32:30,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025260193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:30,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725131561] [2022-11-20 09:32:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:30,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:30,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:30,203 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:30,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d821794-af1b-4183-8943-29c3a60edef9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 09:32:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:30,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 4096 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:32:30,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 759 proven. 264 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-20 09:32:31,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 131 proven. 36 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2022-11-20 09:32:32,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725131561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:32,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:32:32,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6, 5] total 24 [2022-11-20 09:32:32,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672197521] [2022-11-20 09:32:32,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:32,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 09:32:32,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 09:32:32,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-20 09:32:32,423 INFO L87 Difference]: Start difference. First operand 16105 states and 26570 transitions. Second operand has 24 states, 24 states have (on average 19.291666666666668) internal successors, (463), 19 states have internal predecessors, (463), 11 states have call successors, (111), 11 states have call predecessors, (111), 11 states have return successors, (109), 13 states have call predecessors, (109), 11 states have call successors, (109)