./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label33.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_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/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_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/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_d4bc17ad-669f-4812-a84e-ff346dff714e/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 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:40:43,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:40:43,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:40:43,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:40:43,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:40:43,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:40:43,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:40:43,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:40:43,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:40:43,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:40:43,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:40:43,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:40:43,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:40:43,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:40:43,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:40:43,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:40:43,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:40:43,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:40:43,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:40:43,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:40:43,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:40:43,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:40:43,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:40:43,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:40:43,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:40:43,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:40:43,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:40:43,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:40:43,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:40:43,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:40:43,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:40:43,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:40:43,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:40:43,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:40:43,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:40:43,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:40:43,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:40:43,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:40:43,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:40:43,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:40:43,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:40:43,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:40:43,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:40:43,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:40:43,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:40:43,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:40:43,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:40:43,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:40:43,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:40:43,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:40:43,727 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:40:43,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:40:43,729 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:40:43,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:40:43,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:40:43,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:40:43,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:40:43,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:40:43,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:40:43,730 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:40:43,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:40:43,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:40:43,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:40:43,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:40:43,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:40:43,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:40:43,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:40:43,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:40:43,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:40:43,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:40:43,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:40:43,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:40:43,735 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:40:43,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:40:43,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:40:43,736 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_d4bc17ad-669f-4812-a84e-ff346dff714e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 [2022-11-20 11:40:44,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:40:44,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:40:44,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:40:44,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:40:44,091 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:40:44,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2022-11-20 11:40:47,119 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:40:47,675 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:40:47,676 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2022-11-20 11:40:47,714 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/data/ab3a392a3/3373e39de1ad4b2ba833cc1da9bb52c9/FLAGc7db8b988 [2022-11-20 11:40:47,735 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/data/ab3a392a3/3373e39de1ad4b2ba833cc1da9bb52c9 [2022-11-20 11:40:47,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:40:47,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:40:47,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:40:47,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:40:47,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:40:47,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:40:47" (1/1) ... [2022-11-20 11:40:47,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9de6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:47, skipping insertion in model container [2022-11-20 11:40:47,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:40:47" (1/1) ... [2022-11-20 11:40:47,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:40:47,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:40:48,237 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_d4bc17ad-669f-4812-a84e-ff346dff714e/sv-benchmarks/c/eca-rers2012/Problem12_label33.c[6146,6159] [2022-11-20 11:40:49,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:40:49,204 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:40:49,236 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_d4bc17ad-669f-4812-a84e-ff346dff714e/sv-benchmarks/c/eca-rers2012/Problem12_label33.c[6146,6159] [2022-11-20 11:40:49,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:40:49,826 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:40:49,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49 WrapperNode [2022-11-20 11:40:49,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:40:49,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:40:49,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:40:49,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:40:49,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:49,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,242 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-20 11:40:50,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:40:50,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:40:50,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:40:50,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:40:50,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:40:50,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:40:50,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:40:50,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:40:50,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (1/1) ... [2022-11-20 11:40:50,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:40:50,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:50,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:40:50,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:40:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:40:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:40:50,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:40:50,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:40:51,059 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:40:51,061 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:40:55,994 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:40:56,008 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:40:56,008 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:40:56,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:40:56 BoogieIcfgContainer [2022-11-20 11:40:56,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:40:56,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:40:56,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:40:56,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:40:56,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:40:47" (1/3) ... [2022-11-20 11:40:56,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7d108e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:40:56, skipping insertion in model container [2022-11-20 11:40:56,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:49" (2/3) ... [2022-11-20 11:40:56,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7d108e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:40:56, skipping insertion in model container [2022-11-20 11:40:56,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:40:56" (3/3) ... [2022-11-20 11:40:56,021 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label33.c [2022-11-20 11:40:56,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:40:56,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:40:56,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:40:56,120 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;@675428dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:40:56,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:40:56,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 11:40:56,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:56,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:56,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash 301649817, now seen corresponding path program 1 times [2022-11-20 11:40:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:56,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334288526] [2022-11-20 11:40:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:56,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:56,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:56,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334288526] [2022-11-20 11:40:56,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334288526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:56,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:56,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:40:56,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695339266] [2022-11-20 11:40:56,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:56,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:40:56,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:40:56,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:40:56,754 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:06,539 INFO L93 Difference]: Finished difference Result 3142 states and 6130 transitions. [2022-11-20 11:41:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:41:06,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-20 11:41:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:06,572 INFO L225 Difference]: With dead ends: 3142 [2022-11-20 11:41:06,572 INFO L226 Difference]: Without dead ends: 2257 [2022-11-20 11:41:06,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:41:06,585 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 2223 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5499 mSolverCounterSat, 1273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 6772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1273 IncrementalHoareTripleChecker+Valid, 5499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:06,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 765 Invalid, 6772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1273 Valid, 5499 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-20 11:41:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-11-20 11:41:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-11-20 11:41:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5749113475177305) internal successors, (3553), 2256 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3553 transitions. [2022-11-20 11:41:06,734 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3553 transitions. Word has length 49 [2022-11-20 11:41:06,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:06,735 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3553 transitions. [2022-11-20 11:41:06,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:06,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3553 transitions. [2022-11-20 11:41:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 11:41:06,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:06,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:06,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:41:06,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:06,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:06,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2123608565, now seen corresponding path program 1 times [2022-11-20 11:41:06,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:06,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754636149] [2022-11-20 11:41:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:06,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:07,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:07,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754636149] [2022-11-20 11:41:07,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754636149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:07,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:07,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:07,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867941034] [2022-11-20 11:41:07,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:07,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:41:07,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:07,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:41:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:41:07,183 INFO L87 Difference]: Start difference. First operand 2257 states and 3553 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:12,735 INFO L93 Difference]: Finished difference Result 6051 states and 9916 transitions. [2022-11-20 11:41:12,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:41:12,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-11-20 11:41:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:12,750 INFO L225 Difference]: With dead ends: 6051 [2022-11-20 11:41:12,750 INFO L226 Difference]: Without dead ends: 3759 [2022-11-20 11:41:12,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:41:12,755 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 705 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:12,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 688 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 11:41:12,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-11-20 11:41:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3008. [2022-11-20 11:41:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4319920186232125) internal successors, (4306), 3007 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4306 transitions. [2022-11-20 11:41:12,866 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4306 transitions. Word has length 120 [2022-11-20 11:41:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:12,870 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4306 transitions. [2022-11-20 11:41:12,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4306 transitions. [2022-11-20 11:41:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-20 11:41:12,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:12,883 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 11:41:12,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:41:12,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:12,894 INFO L85 PathProgramCache]: Analyzing trace with hash -819857147, now seen corresponding path program 1 times [2022-11-20 11:41:12,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:12,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169132587] [2022-11-20 11:41:12,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-20 11:41:13,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:13,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169132587] [2022-11-20 11:41:13,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169132587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:13,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:13,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:41:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711429079] [2022-11-20 11:41:13,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:13,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:13,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:13,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:13,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:13,263 INFO L87 Difference]: Start difference. First operand 3008 states and 4306 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:17,309 INFO L93 Difference]: Finished difference Result 8267 states and 11519 transitions. [2022-11-20 11:41:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:17,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2022-11-20 11:41:17,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:17,328 INFO L225 Difference]: With dead ends: 8267 [2022-11-20 11:41:17,329 INFO L226 Difference]: Without dead ends: 5261 [2022-11-20 11:41:17,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:17,334 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:17,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 11:41:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2022-11-20 11:41:17,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2022-11-20 11:41:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.1982889733840305) internal successors, (6303), 5260 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:17,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6303 transitions. [2022-11-20 11:41:17,461 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6303 transitions. Word has length 259 [2022-11-20 11:41:17,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:17,463 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 6303 transitions. [2022-11-20 11:41:17,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:17,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6303 transitions. [2022-11-20 11:41:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-20 11:41:17,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:17,469 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 11:41:17,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:41:17,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:17,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:17,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2005660694, now seen corresponding path program 1 times [2022-11-20 11:41:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:17,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110430477] [2022-11-20 11:41:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 11:41:18,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:18,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110430477] [2022-11-20 11:41:18,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110430477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:18,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:18,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993749412] [2022-11-20 11:41:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:18,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:41:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:41:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:41:18,128 INFO L87 Difference]: Start difference. First operand 5261 states and 6303 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:23,126 INFO L93 Difference]: Finished difference Result 12061 states and 15068 transitions. [2022-11-20 11:41:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:41:23,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2022-11-20 11:41:23,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:23,149 INFO L225 Difference]: With dead ends: 12061 [2022-11-20 11:41:23,149 INFO L226 Difference]: Without dead ends: 7516 [2022-11-20 11:41:23,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:41:23,155 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 776 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:23,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 327 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 11:41:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2022-11-20 11:41:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 7514. [2022-11-20 11:41:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 1.1812857713296951) internal successors, (8875), 7513 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 8875 transitions. [2022-11-20 11:41:23,317 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 8875 transitions. Word has length 261 [2022-11-20 11:41:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:23,318 INFO L495 AbstractCegarLoop]: Abstraction has 7514 states and 8875 transitions. [2022-11-20 11:41:23,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 8875 transitions. [2022-11-20 11:41:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-20 11:41:23,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:23,327 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:23,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:41:23,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1457848671, now seen corresponding path program 1 times [2022-11-20 11:41:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:23,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934978895] [2022-11-20 11:41:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 11:41:24,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:24,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934978895] [2022-11-20 11:41:24,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934978895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:24,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:24,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983716124] [2022-11-20 11:41:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:24,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:24,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:24,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:24,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:24,960 INFO L87 Difference]: Start difference. First operand 7514 states and 8875 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:29,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:29,154 INFO L93 Difference]: Finished difference Result 16528 states and 20146 transitions. [2022-11-20 11:41:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:29,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2022-11-20 11:41:29,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:29,181 INFO L225 Difference]: With dead ends: 16528 [2022-11-20 11:41:29,182 INFO L226 Difference]: Without dead ends: 9767 [2022-11-20 11:41:29,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:29,190 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 826 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 3018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:29,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 139 Invalid, 3018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 11:41:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-11-20 11:41:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-11-20 11:41:29,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.207352037681753) internal successors, (11791), 9766 states have internal predecessors, (11791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 11791 transitions. [2022-11-20 11:41:29,369 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 11791 transitions. Word has length 338 [2022-11-20 11:41:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:29,370 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 11791 transitions. [2022-11-20 11:41:29,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 11791 transitions. [2022-11-20 11:41:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-20 11:41:29,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:29,378 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-20 11:41:29,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:41:29,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:29,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1945795235, now seen corresponding path program 1 times [2022-11-20 11:41:29,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:29,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708650875] [2022-11-20 11:41:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 11:41:30,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:30,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708650875] [2022-11-20 11:41:30,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708650875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:30,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:30,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:30,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569328024] [2022-11-20 11:41:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:30,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:30,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:30,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:30,340 INFO L87 Difference]: Start difference. First operand 9767 states and 11791 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:34,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:34,473 INFO L93 Difference]: Finished difference Result 21034 states and 25744 transitions. [2022-11-20 11:41:34,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:34,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2022-11-20 11:41:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:34,501 INFO L225 Difference]: With dead ends: 21034 [2022-11-20 11:41:34,501 INFO L226 Difference]: Without dead ends: 12020 [2022-11-20 11:41:34,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:34,512 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:34,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 105 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 11:41:34,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2022-11-20 11:41:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 12020. [2022-11-20 11:41:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.1926116981446044) internal successors, (14334), 12019 states have internal predecessors, (14334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14334 transitions. [2022-11-20 11:41:34,733 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14334 transitions. Word has length 362 [2022-11-20 11:41:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:34,734 INFO L495 AbstractCegarLoop]: Abstraction has 12020 states and 14334 transitions. [2022-11-20 11:41:34,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14334 transitions. [2022-11-20 11:41:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-11-20 11:41:34,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:34,742 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:34,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:41:34,743 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:34,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:34,743 INFO L85 PathProgramCache]: Analyzing trace with hash 982786, now seen corresponding path program 1 times [2022-11-20 11:41:34,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:34,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332053138] [2022-11-20 11:41:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:34,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 11:41:35,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:35,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332053138] [2022-11-20 11:41:35,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332053138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:35,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:35,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94583762] [2022-11-20 11:41:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:35,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:35,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:35,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:35,233 INFO L87 Difference]: Start difference. First operand 12020 states and 14334 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:39,883 INFO L93 Difference]: Finished difference Result 33801 states and 40725 transitions. [2022-11-20 11:41:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:39,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376 [2022-11-20 11:41:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:39,929 INFO L225 Difference]: With dead ends: 33801 [2022-11-20 11:41:39,930 INFO L226 Difference]: Without dead ends: 22534 [2022-11-20 11:41:39,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:39,943 INFO L413 NwaCegarLoop]: 1322 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:39,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1330 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 11:41:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2022-11-20 11:41:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 21032. [2022-11-20 11:41:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21032 states, 21031 states have (on average 1.182825353050259) internal successors, (24876), 21031 states have internal predecessors, (24876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21032 states to 21032 states and 24876 transitions. [2022-11-20 11:41:40,289 INFO L78 Accepts]: Start accepts. Automaton has 21032 states and 24876 transitions. Word has length 376 [2022-11-20 11:41:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:40,289 INFO L495 AbstractCegarLoop]: Abstraction has 21032 states and 24876 transitions. [2022-11-20 11:41:40,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 21032 states and 24876 transitions. [2022-11-20 11:41:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-20 11:41:40,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:40,300 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:41:40,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:41:40,301 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:40,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:40,302 INFO L85 PathProgramCache]: Analyzing trace with hash -51249649, now seen corresponding path program 1 times [2022-11-20 11:41:40,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:40,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406945674] [2022-11-20 11:41:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:40,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 11:41:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:40,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406945674] [2022-11-20 11:41:40,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406945674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:40,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:40,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:40,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795986250] [2022-11-20 11:41:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:40,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:40,718 INFO L87 Difference]: Start difference. First operand 21032 states and 24876 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:45,159 INFO L93 Difference]: Finished difference Result 49572 states and 59456 transitions. [2022-11-20 11:41:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:45,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2022-11-20 11:41:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:45,206 INFO L225 Difference]: With dead ends: 49572 [2022-11-20 11:41:45,206 INFO L226 Difference]: Without dead ends: 29293 [2022-11-20 11:41:45,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:45,225 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 711 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:45,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1319 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 11:41:45,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2022-11-20 11:41:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 28542. [2022-11-20 11:41:45,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28542 states, 28541 states have (on average 1.1838407904418204) internal successors, (33788), 28541 states have internal predecessors, (33788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28542 states to 28542 states and 33788 transitions. [2022-11-20 11:41:45,747 INFO L78 Accepts]: Start accepts. Automaton has 28542 states and 33788 transitions. Word has length 377 [2022-11-20 11:41:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:45,748 INFO L495 AbstractCegarLoop]: Abstraction has 28542 states and 33788 transitions. [2022-11-20 11:41:45,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 28542 states and 33788 transitions. [2022-11-20 11:41:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-11-20 11:41:45,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:45,757 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:45,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:41:45,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:45,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:45,760 INFO L85 PathProgramCache]: Analyzing trace with hash 108402636, now seen corresponding path program 1 times [2022-11-20 11:41:45,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:45,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750364509] [2022-11-20 11:41:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:45,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-20 11:41:46,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:46,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750364509] [2022-11-20 11:41:46,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750364509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:46,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:46,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:46,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200256790] [2022-11-20 11:41:46,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:46,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:46,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:46,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:46,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:46,119 INFO L87 Difference]: Start difference. First operand 28542 states and 33788 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:50,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:50,376 INFO L93 Difference]: Finished difference Result 81114 states and 96711 transitions. [2022-11-20 11:41:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:50,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2022-11-20 11:41:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:50,433 INFO L225 Difference]: With dead ends: 81114 [2022-11-20 11:41:50,433 INFO L226 Difference]: Without dead ends: 49570 [2022-11-20 11:41:50,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:50,459 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 754 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:50,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1266 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 11:41:50,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49570 states. [2022-11-20 11:41:50,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49570 to 48819. [2022-11-20 11:41:51,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48819 states, 48818 states have (on average 1.1366094473349995) internal successors, (55487), 48818 states have internal predecessors, (55487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48819 states to 48819 states and 55487 transitions. [2022-11-20 11:41:51,072 INFO L78 Accepts]: Start accepts. Automaton has 48819 states and 55487 transitions. Word has length 380 [2022-11-20 11:41:51,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:51,073 INFO L495 AbstractCegarLoop]: Abstraction has 48819 states and 55487 transitions. [2022-11-20 11:41:51,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:51,073 INFO L276 IsEmpty]: Start isEmpty. Operand 48819 states and 55487 transitions. [2022-11-20 11:41:51,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-20 11:41:51,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:51,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:51,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:41:51,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1333574750, now seen corresponding path program 1 times [2022-11-20 11:41:51,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:51,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43483966] [2022-11-20 11:41:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:51,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-20 11:41:51,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:51,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43483966] [2022-11-20 11:41:51,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43483966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:51,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:51,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:41:51,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624935857] [2022-11-20 11:41:51,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:51,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:41:51,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:51,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:41:51,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:51,577 INFO L87 Difference]: Start difference. First operand 48819 states and 55487 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:55,648 INFO L93 Difference]: Finished difference Result 96885 states and 110216 transitions. [2022-11-20 11:41:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:41:55,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 443 [2022-11-20 11:41:55,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:55,712 INFO L225 Difference]: With dead ends: 96885 [2022-11-20 11:41:55,713 INFO L226 Difference]: Without dead ends: 48819 [2022-11-20 11:41:55,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:41:55,742 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 684 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:55,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 277 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 11:41:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48819 states. [2022-11-20 11:41:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48819 to 48819. [2022-11-20 11:41:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48819 states, 48818 states have (on average 1.131877586136261) internal successors, (55256), 48818 states have internal predecessors, (55256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48819 states to 48819 states and 55256 transitions. [2022-11-20 11:41:56,440 INFO L78 Accepts]: Start accepts. Automaton has 48819 states and 55256 transitions. Word has length 443 [2022-11-20 11:41:56,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:56,441 INFO L495 AbstractCegarLoop]: Abstraction has 48819 states and 55256 transitions. [2022-11-20 11:41:56,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 48819 states and 55256 transitions. [2022-11-20 11:41:56,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-20 11:41:56,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:56,453 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:41:56,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:41:56,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1371657392, now seen corresponding path program 1 times [2022-11-20 11:41:56,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:56,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753853540] [2022-11-20 11:41:56,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 423 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:59,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:59,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753853540] [2022-11-20 11:41:59,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753853540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:59,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948217985] [2022-11-20 11:41:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:59,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:59,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:59,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:59,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:41:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:59,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:41:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:42:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-20 11:42:00,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:42:00,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948217985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:00,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:42:00,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-20 11:42:00,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365419684] [2022-11-20 11:42:00,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:00,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:42:00,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:00,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:42:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:42:00,509 INFO L87 Difference]: Start difference. First operand 48819 states and 55256 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:07,752 INFO L93 Difference]: Finished difference Result 147955 states and 169736 transitions. [2022-11-20 11:42:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:42:07,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 484 [2022-11-20 11:42:07,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:07,878 INFO L225 Difference]: With dead ends: 147955 [2022-11-20 11:42:07,878 INFO L226 Difference]: Without dead ends: 99889 [2022-11-20 11:42:07,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:42:07,910 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 1853 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4613 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 5311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 4613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:07,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 69 Invalid, 5311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 4613 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-20 11:42:07,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99889 states. [2022-11-20 11:42:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99889 to 99136. [2022-11-20 11:42:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99136 states, 99135 states have (on average 1.143057446915822) internal successors, (113317), 99135 states have internal predecessors, (113317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99136 states to 99136 states and 113317 transitions. [2022-11-20 11:42:09,606 INFO L78 Accepts]: Start accepts. Automaton has 99136 states and 113317 transitions. Word has length 484 [2022-11-20 11:42:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:09,607 INFO L495 AbstractCegarLoop]: Abstraction has 99136 states and 113317 transitions. [2022-11-20 11:42:09,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 99136 states and 113317 transitions. [2022-11-20 11:42:09,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-20 11:42:09,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:09,657 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:09,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:42:09,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:42:09,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash 105166052, now seen corresponding path program 1 times [2022-11-20 11:42:09,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:09,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401145538] [2022-11-20 11:42:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 414 proven. 108 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-11-20 11:42:11,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:11,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401145538] [2022-11-20 11:42:11,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401145538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:42:11,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548088417] [2022-11-20 11:42:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:11,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:42:11,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:42:11,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:42:11,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:42:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:11,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:42:11,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:42:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-20 11:42:11,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:42:11,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548088417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:11,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:42:11,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-20 11:42:11,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26500764] [2022-11-20 11:42:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:11,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:11,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:11,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:42:11,853 INFO L87 Difference]: Start difference. First operand 99136 states and 113317 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:16,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:16,769 INFO L93 Difference]: Finished difference Result 241077 states and 278927 transitions. [2022-11-20 11:42:16,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:16,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 530 [2022-11-20 11:42:16,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:16,957 INFO L225 Difference]: With dead ends: 241077 [2022-11-20 11:42:16,958 INFO L226 Difference]: Without dead ends: 142694 [2022-11-20 11:42:17,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:42:17,010 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 694 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:17,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 495 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 11:42:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142694 states. [2022-11-20 11:42:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142694 to 137437. [2022-11-20 11:42:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137437 states, 137436 states have (on average 1.1303806862830699) internal successors, (155355), 137436 states have internal predecessors, (155355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137437 states to 137437 states and 155355 transitions. [2022-11-20 11:42:19,177 INFO L78 Accepts]: Start accepts. Automaton has 137437 states and 155355 transitions. Word has length 530 [2022-11-20 11:42:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:19,178 INFO L495 AbstractCegarLoop]: Abstraction has 137437 states and 155355 transitions. [2022-11-20 11:42:19,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 137437 states and 155355 transitions. [2022-11-20 11:42:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2022-11-20 11:42:19,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:19,218 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:19,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:42:19,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4bc17ad-669f-4812-a84e-ff346dff714e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:42:19,424 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:19,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:19,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1688461461, now seen corresponding path program 1 times [2022-11-20 11:42:19,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:19,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478006507] [2022-11-20 11:42:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:19,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 828 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-20 11:42:20,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:20,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478006507] [2022-11-20 11:42:20,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478006507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:20,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:20,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:42:20,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602799099] [2022-11-20 11:42:20,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:20,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:20,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:20,219 INFO L87 Difference]: Start difference. First operand 137437 states and 155355 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:25,300 INFO L93 Difference]: Finished difference Result 274872 states and 310721 transitions. [2022-11-20 11:42:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 582 [2022-11-20 11:42:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:25,510 INFO L225 Difference]: With dead ends: 274872 [2022-11-20 11:42:25,510 INFO L226 Difference]: Without dead ends: 138188 [2022-11-20 11:42:25,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:25,592 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 735 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:25,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 227 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 11:42:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138188 states. [2022-11-20 11:42:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138188 to 135935. [2022-11-20 11:42:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135935 states, 135934 states have (on average 1.1257227772301264) internal successors, (153024), 135934 states have internal predecessors, (153024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135935 states to 135935 states and 153024 transitions. [2022-11-20 11:42:27,519 INFO L78 Accepts]: Start accepts. Automaton has 135935 states and 153024 transitions. Word has length 582 [2022-11-20 11:42:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:27,520 INFO L495 AbstractCegarLoop]: Abstraction has 135935 states and 153024 transitions. [2022-11-20 11:42:27,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 135935 states and 153024 transitions. [2022-11-20 11:42:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-11-20 11:42:27,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:27,536 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:27,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:42:27,537 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:27,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash 341598571, now seen corresponding path program 1 times [2022-11-20 11:42:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:27,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504734248] [2022-11-20 11:42:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1119 backedges. 844 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-20 11:42:28,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:28,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504734248] [2022-11-20 11:42:28,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504734248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:28,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:28,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:42:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498499211] [2022-11-20 11:42:28,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:28,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:28,335 INFO L87 Difference]: Start difference. First operand 135935 states and 153024 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:34,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:34,476 INFO L93 Difference]: Finished difference Result 380763 states and 429237 transitions. [2022-11-20 11:42:34,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:34,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 593 [2022-11-20 11:42:34,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:34,792 INFO L225 Difference]: With dead ends: 380763 [2022-11-20 11:42:34,792 INFO L226 Difference]: Without dead ends: 245581 [2022-11-20 11:42:34,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:34,844 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:34,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 517 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 11:42:35,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245581 states. [2022-11-20 11:42:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245581 to 242577. [2022-11-20 11:42:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242577 states, 242576 states have (on average 1.1043920255919795) internal successors, (267899), 242576 states have internal predecessors, (267899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242577 states to 242577 states and 267899 transitions. [2022-11-20 11:42:38,564 INFO L78 Accepts]: Start accepts. Automaton has 242577 states and 267899 transitions. Word has length 593 [2022-11-20 11:42:38,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:38,565 INFO L495 AbstractCegarLoop]: Abstraction has 242577 states and 267899 transitions. [2022-11-20 11:42:38,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:38,565 INFO L276 IsEmpty]: Start isEmpty. Operand 242577 states and 267899 transitions. [2022-11-20 11:42:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2022-11-20 11:42:38,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:38,625 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-20 11:42:38,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:42:38,625 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:38,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:38,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1130398600, now seen corresponding path program 1 times [2022-11-20 11:42:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:38,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958169562] [2022-11-20 11:42:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:38,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2022-11-20 11:42:40,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:40,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958169562] [2022-11-20 11:42:40,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958169562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:40,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:40,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:42:40,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785829846] [2022-11-20 11:42:40,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:40,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:40,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:40,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:40,304 INFO L87 Difference]: Start difference. First operand 242577 states and 267899 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:46,401 INFO L93 Difference]: Finished difference Result 548236 states and 603361 transitions. [2022-11-20 11:42:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:46,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 737 [2022-11-20 11:42:46,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:46,740 INFO L225 Difference]: With dead ends: 548236 [2022-11-20 11:42:46,740 INFO L226 Difference]: Without dead ends: 306412 [2022-11-20 11:42:46,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:46,826 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 585 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:46,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1350 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 11:42:47,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306412 states. [2022-11-20 11:42:51,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306412 to 298151. [2022-11-20 11:42:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298151 states, 298150 states have (on average 1.088817709206775) internal successors, (324631), 298150 states have internal predecessors, (324631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298151 states to 298151 states and 324631 transitions. [2022-11-20 11:42:52,025 INFO L78 Accepts]: Start accepts. Automaton has 298151 states and 324631 transitions. Word has length 737 [2022-11-20 11:42:52,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:52,026 INFO L495 AbstractCegarLoop]: Abstraction has 298151 states and 324631 transitions. [2022-11-20 11:42:52,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 298151 states and 324631 transitions. [2022-11-20 11:42:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2022-11-20 11:42:52,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:52,077 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:52,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:42:52,078 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash -639411, now seen corresponding path program 1 times [2022-11-20 11:42:52,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:52,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299063156] [2022-11-20 11:42:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 1151 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2022-11-20 11:42:53,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:53,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299063156] [2022-11-20 11:42:53,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299063156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:53,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:53,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:42:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984455946] [2022-11-20 11:42:53,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:53,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:53,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:53,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:53,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:53,585 INFO L87 Difference]: Start difference. First operand 298151 states and 324631 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)