./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/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_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/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_68097bbc-1e73-4673-b4fd-f21f19223114/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 c371ce1f15a8888766c33a9703b06847f70d6274570c9b062f0d05b5c6caa625 --- 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 10:29:59,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:29:59,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:29:59,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:29:59,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:29:59,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:29:59,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:29:59,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:29:59,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:29:59,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:29:59,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:29:59,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:29:59,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:29:59,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:29:59,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:29:59,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:29:59,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:29:59,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:29:59,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:29:59,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:29:59,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:29:59,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:29:59,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:29:59,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:29:59,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:29:59,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:29:59,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:29:59,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:29:59,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:29:59,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:29:59,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:29:59,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:29:59,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:29:59,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:29:59,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:29:59,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:29:59,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:29:59,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:29:59,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:29:59,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:29:59,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:29:59,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:29:59,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:29:59,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:29:59,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:29:59,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:29:59,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:29:59,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:29:59,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:29:59,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:29:59,730 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:29:59,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:29:59,732 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:29:59,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:29:59,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:29:59,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:29:59,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:29:59,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:29:59,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:29:59,733 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:29:59,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:29:59,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:29:59,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:29:59,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:29:59,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:29:59,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:29:59,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:29:59,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:29:59,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:29:59,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:29:59,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:29:59,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:29:59,736 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:29:59,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:29:59,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:29:59,737 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_68097bbc-1e73-4673-b4fd-f21f19223114/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c371ce1f15a8888766c33a9703b06847f70d6274570c9b062f0d05b5c6caa625 [2022-11-20 10:30:00,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:00,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:00,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:00,067 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:00,067 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:00,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem17_label34.c [2022-11-20 10:30:03,183 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:03,627 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:03,628 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/sv-benchmarks/c/eca-rers2012/Problem17_label34.c [2022-11-20 10:30:03,659 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/data/e00df4ec0/aa153a7987114d33b502b483c8ffcec4/FLAG7efa08ef6 [2022-11-20 10:30:03,681 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/data/e00df4ec0/aa153a7987114d33b502b483c8ffcec4 [2022-11-20 10:30:03,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:03,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:03,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:03,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:03,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:03,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:03" (1/1) ... [2022-11-20 10:30:03,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba9f042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:03, skipping insertion in model container [2022-11-20 10:30:03,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:03" (1/1) ... [2022-11-20 10:30:03,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:03,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:04,085 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_68097bbc-1e73-4673-b4fd-f21f19223114/sv-benchmarks/c/eca-rers2012/Problem17_label34.c[2983,2996] [2022-11-20 10:30:04,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:04,892 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:04,926 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_68097bbc-1e73-4673-b4fd-f21f19223114/sv-benchmarks/c/eca-rers2012/Problem17_label34.c[2983,2996] [2022-11-20 10:30:05,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:05,357 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:05,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05 WrapperNode [2022-11-20 10:30:05,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:05,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:05,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:05,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:05,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,756 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-20 10:30:05,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:05,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:05,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:05,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:05,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:05,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:06,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:06,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:06,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:06,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:06,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:06,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (1/1) ... [2022-11-20 10:30:06,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:06,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:06,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:06,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:06,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:06,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:06,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:10,686 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:10,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:10,705 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:30:10,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:10 BoogieIcfgContainer [2022-11-20 10:30:10,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:10,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:10,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:10,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:10,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:03" (1/3) ... [2022-11-20 10:30:10,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba64f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:10, skipping insertion in model container [2022-11-20 10:30:10,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:05" (2/3) ... [2022-11-20 10:30:10,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba64f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:10, skipping insertion in model container [2022-11-20 10:30:10,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:10" (3/3) ... [2022-11-20 10:30:10,717 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label34.c [2022-11-20 10:30:10,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:10,736 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:30:10,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:10,824 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;@f0fdb6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:10,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:30:10,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 10:30:10,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:30:10,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:10,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:10,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:10,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:10,848 INFO L85 PathProgramCache]: Analyzing trace with hash 406614337, now seen corresponding path program 1 times [2022-11-20 10:30:10,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:10,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337210189] [2022-11-20 10:30:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:10,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:11,188 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 10:30:11,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:11,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337210189] [2022-11-20 10:30:11,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337210189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:11,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:11,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:30:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990395158] [2022-11-20 10:30:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:11,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:11,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:11,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:11,246 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 10:30:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:15,318 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-11-20 10:30:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:15,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2022-11-20 10:30:15,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:15,340 INFO L225 Difference]: With dead ends: 1642 [2022-11-20 10:30:15,340 INFO L226 Difference]: Without dead ends: 975 [2022-11-20 10:30:15,345 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 10:30:15,348 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 471 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:15,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 10:30:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-11-20 10:30:15,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-11-20 10:30:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 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 10:30:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-11-20 10:30:15,434 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 19 [2022-11-20 10:30:15,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:15,434 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-11-20 10:30:15,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 10:30:15,435 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-11-20 10:30:15,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 10:30:15,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:15,437 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:30:15,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:15,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:15,444 INFO L85 PathProgramCache]: Analyzing trace with hash 952084788, now seen corresponding path program 1 times [2022-11-20 10:30:15,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:15,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799968841] [2022-11-20 10:30:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:15,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:15,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:15,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799968841] [2022-11-20 10:30:15,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799968841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:15,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:15,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:15,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382908425] [2022-11-20 10:30:15,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:15,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:15,994 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:21,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:21,796 INFO L93 Difference]: Finished difference Result 3735 states and 5654 transitions. [2022-11-20 10:30:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:30:21,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-20 10:30:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:21,810 INFO L225 Difference]: With dead ends: 3735 [2022-11-20 10:30:21,810 INFO L226 Difference]: Without dead ends: 2765 [2022-11-20 10:30:21,816 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 10:30:21,817 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 900 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:21,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 314 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 10:30:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2022-11-20 10:30:21,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2724. [2022-11-20 10:30:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 1.3944179214102093) internal successors, (3797), 2723 states have internal predecessors, (3797), 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 10:30:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3797 transitions. [2022-11-20 10:30:21,905 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3797 transitions. Word has length 89 [2022-11-20 10:30:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:21,907 INFO L495 AbstractCegarLoop]: Abstraction has 2724 states and 3797 transitions. [2022-11-20 10:30:21,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3797 transitions. [2022-11-20 10:30:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 10:30:21,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:21,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:21,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:30:21,924 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1747470320, now seen corresponding path program 1 times [2022-11-20 10:30:21,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:21,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115611310] [2022-11-20 10:30:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:21,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:22,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115611310] [2022-11-20 10:30:22,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115611310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:22,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:22,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:30:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329283016] [2022-11-20 10:30:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:22,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:22,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:22,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:22,405 INFO L87 Difference]: Start difference. First operand 2724 states and 3797 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 10:30:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:26,344 INFO L93 Difference]: Finished difference Result 6325 states and 8834 transitions. [2022-11-20 10:30:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:26,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 124 [2022-11-20 10:30:26,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:26,358 INFO L225 Difference]: With dead ends: 6325 [2022-11-20 10:30:26,358 INFO L226 Difference]: Without dead ends: 3603 [2022-11-20 10:30:26,362 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 10:30:26,363 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:26,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 10:30:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2022-11-20 10:30:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3583. [2022-11-20 10:30:26,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3604131769960917) internal successors, (4873), 3582 states have internal predecessors, (4873), 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 10:30:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4873 transitions. [2022-11-20 10:30:26,444 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4873 transitions. Word has length 124 [2022-11-20 10:30:26,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:26,444 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 4873 transitions. [2022-11-20 10:30:26,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 10:30:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4873 transitions. [2022-11-20 10:30:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 10:30:26,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:26,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:30:26,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2113039039, now seen corresponding path program 1 times [2022-11-20 10:30:26,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:26,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147714200] [2022-11-20 10:30:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:26,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:26,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147714200] [2022-11-20 10:30:26,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147714200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:26,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:26,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:30:26,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343788749] [2022-11-20 10:30:26,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:26,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:26,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:26,605 INFO L87 Difference]: Start difference. First operand 3583 states and 4873 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 10:30:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:29,784 INFO L93 Difference]: Finished difference Result 9293 states and 12695 transitions. [2022-11-20 10:30:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 130 [2022-11-20 10:30:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:29,800 INFO L225 Difference]: With dead ends: 9293 [2022-11-20 10:30:29,800 INFO L226 Difference]: Without dead ends: 4853 [2022-11-20 10:30:29,805 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 10:30:29,806 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 348 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:29,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 590 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 10:30:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2022-11-20 10:30:29,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4001. [2022-11-20 10:30:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 4000 states have (on average 1.22775) internal successors, (4911), 4000 states have internal predecessors, (4911), 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 10:30:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 4911 transitions. [2022-11-20 10:30:29,885 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 4911 transitions. Word has length 130 [2022-11-20 10:30:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:29,886 INFO L495 AbstractCegarLoop]: Abstraction has 4001 states and 4911 transitions. [2022-11-20 10:30:29,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 10:30:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 4911 transitions. [2022-11-20 10:30:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-20 10:30:29,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:29,889 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 10:30:29,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:30:29,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:29,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1935512509, now seen corresponding path program 1 times [2022-11-20 10:30:29,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:29,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974188620] [2022-11-20 10:30:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:29,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 10:30:30,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:30,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974188620] [2022-11-20 10:30:30,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974188620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:30,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:30,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568568592] [2022-11-20 10:30:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:30,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:30,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:30,076 INFO L87 Difference]: Start difference. First operand 4001 states and 4911 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 10:30:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:33,245 INFO L93 Difference]: Finished difference Result 10125 states and 12629 transitions. [2022-11-20 10:30:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:33,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 173 [2022-11-20 10:30:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:33,265 INFO L225 Difference]: With dead ends: 10125 [2022-11-20 10:30:33,265 INFO L226 Difference]: Without dead ends: 6126 [2022-11-20 10:30:33,270 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 10:30:33,271 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 441 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:33,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 477 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 10:30:33,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2022-11-20 10:30:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 3978. [2022-11-20 10:30:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3977 states have (on average 1.2260497862710587) internal successors, (4876), 3977 states have internal predecessors, (4876), 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 10:30:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 4876 transitions. [2022-11-20 10:30:33,360 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 4876 transitions. Word has length 173 [2022-11-20 10:30:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:33,361 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 4876 transitions. [2022-11-20 10:30:33,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 10:30:33,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 4876 transitions. [2022-11-20 10:30:33,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-20 10:30:33,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:33,364 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 10:30:33,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:30:33,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:33,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:33,365 INFO L85 PathProgramCache]: Analyzing trace with hash -330707048, now seen corresponding path program 1 times [2022-11-20 10:30:33,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:33,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692351188] [2022-11-20 10:30:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:33,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:33,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692351188] [2022-11-20 10:30:33,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692351188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:33,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:33,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:30:33,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475384821] [2022-11-20 10:30:33,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:33,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:30:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:30:33,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:30:33,809 INFO L87 Difference]: Start difference. First operand 3978 states and 4876 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 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 10:30:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:37,467 INFO L93 Difference]: Finished difference Result 10544 states and 13172 transitions. [2022-11-20 10:30:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:30:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 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 180 [2022-11-20 10:30:37,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:37,496 INFO L225 Difference]: With dead ends: 10544 [2022-11-20 10:30:37,496 INFO L226 Difference]: Without dead ends: 6568 [2022-11-20 10:30:37,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:30:37,501 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 600 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:37,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 863 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 10:30:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6568 states. [2022-11-20 10:30:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6568 to 6535. [2022-11-20 10:30:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 6534 states have (on average 1.2058463422099786) internal successors, (7879), 6534 states have internal predecessors, (7879), 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 10:30:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 7879 transitions. [2022-11-20 10:30:37,636 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 7879 transitions. Word has length 180 [2022-11-20 10:30:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:37,637 INFO L495 AbstractCegarLoop]: Abstraction has 6535 states and 7879 transitions. [2022-11-20 10:30:37,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 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 10:30:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 7879 transitions. [2022-11-20 10:30:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-20 10:30:37,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:37,642 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:37,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:30:37,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:37,643 INFO L85 PathProgramCache]: Analyzing trace with hash 75287222, now seen corresponding path program 1 times [2022-11-20 10:30:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:37,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537057046] [2022-11-20 10:30:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:37,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 172 proven. 70 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:30:38,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537057046] [2022-11-20 10:30:38,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537057046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759120872] [2022-11-20 10:30:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:38,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:38,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:38,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:38,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:30:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:38,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:30:38,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 172 proven. 70 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:30:39,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:30:39,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759120872] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:39,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:30:39,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-20 10:30:39,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99262363] [2022-11-20 10:30:39,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:39,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:39,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:39,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:39,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:39,511 INFO L87 Difference]: Start difference. First operand 6535 states and 7879 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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 10:30:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:45,177 INFO L93 Difference]: Finished difference Result 21183 states and 25861 transitions. [2022-11-20 10:30:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:30:45,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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 243 [2022-11-20 10:30:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:45,220 INFO L225 Difference]: With dead ends: 21183 [2022-11-20 10:30:45,220 INFO L226 Difference]: Without dead ends: 14218 [2022-11-20 10:30:45,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:45,228 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 890 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:45,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 162 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 10:30:45,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14218 states. [2022-11-20 10:30:45,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14218 to 14216. [2022-11-20 10:30:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14216 states, 14215 states have (on average 1.1974674639465352) internal successors, (17022), 14215 states have internal predecessors, (17022), 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 10:30:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14216 states to 14216 states and 17022 transitions. [2022-11-20 10:30:45,480 INFO L78 Accepts]: Start accepts. Automaton has 14216 states and 17022 transitions. Word has length 243 [2022-11-20 10:30:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:45,480 INFO L495 AbstractCegarLoop]: Abstraction has 14216 states and 17022 transitions. [2022-11-20 10:30:45,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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 10:30:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 14216 states and 17022 transitions. [2022-11-20 10:30:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-20 10:30:45,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:45,486 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:45,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:30:45,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:45,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1432519742, now seen corresponding path program 1 times [2022-11-20 10:30:45,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:45,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670217148] [2022-11-20 10:30:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:45,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 10:30:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:46,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670217148] [2022-11-20 10:30:46,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670217148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:46,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:46,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987817849] [2022-11-20 10:30:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:46,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:46,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:46,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:46,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:46,070 INFO L87 Difference]: Start difference. First operand 14216 states and 17022 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 10:30:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:49,175 INFO L93 Difference]: Finished difference Result 31407 states and 37752 transitions. [2022-11-20 10:30:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 256 [2022-11-20 10:30:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:49,219 INFO L225 Difference]: With dead ends: 31407 [2022-11-20 10:30:49,220 INFO L226 Difference]: Without dead ends: 16767 [2022-11-20 10:30:49,230 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 10:30:49,231 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 372 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:49,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 905 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 10:30:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16767 states. [2022-11-20 10:30:49,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16767 to 16767. [2022-11-20 10:30:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16767 states, 16766 states have (on average 1.1703447453179052) internal successors, (19622), 16766 states have internal predecessors, (19622), 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 10:30:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16767 states to 16767 states and 19622 transitions. [2022-11-20 10:30:49,478 INFO L78 Accepts]: Start accepts. Automaton has 16767 states and 19622 transitions. Word has length 256 [2022-11-20 10:30:49,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:49,479 INFO L495 AbstractCegarLoop]: Abstraction has 16767 states and 19622 transitions. [2022-11-20 10:30:49,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 10:30:49,479 INFO L276 IsEmpty]: Start isEmpty. Operand 16767 states and 19622 transitions. [2022-11-20 10:30:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-20 10:30:49,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:49,485 INFO L195 NwaCegarLoop]: trace histogram [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, 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 10:30:49,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:30:49,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:49,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:49,486 INFO L85 PathProgramCache]: Analyzing trace with hash -928589185, now seen corresponding path program 1 times [2022-11-20 10:30:49,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:49,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11620973] [2022-11-20 10:30:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 10:30:49,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:49,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11620973] [2022-11-20 10:30:49,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11620973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:49,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:49,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:49,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874328231] [2022-11-20 10:30:49,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:49,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:49,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:49,839 INFO L87 Difference]: Start difference. First operand 16767 states and 19622 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 10:30:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:52,811 INFO L93 Difference]: Finished difference Result 36513 states and 42736 transitions. [2022-11-20 10:30:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:52,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 257 [2022-11-20 10:30:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:52,851 INFO L225 Difference]: With dead ends: 36513 [2022-11-20 10:30:52,851 INFO L226 Difference]: Without dead ends: 19323 [2022-11-20 10:30:52,865 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 10:30:52,866 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 422 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:52,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 906 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 10:30:52,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19323 states. [2022-11-20 10:30:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19323 to 19321. [2022-11-20 10:30:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19321 states, 19320 states have (on average 1.1544513457556935) internal successors, (22304), 19320 states have internal predecessors, (22304), 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 10:30:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19321 states to 19321 states and 22304 transitions. [2022-11-20 10:30:53,144 INFO L78 Accepts]: Start accepts. Automaton has 19321 states and 22304 transitions. Word has length 257 [2022-11-20 10:30:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:53,144 INFO L495 AbstractCegarLoop]: Abstraction has 19321 states and 22304 transitions. [2022-11-20 10:30:53,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 10:30:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 19321 states and 22304 transitions. [2022-11-20 10:30:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-11-20 10:30:53,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:53,154 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 10:30:53,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:30:53,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:53,155 INFO L85 PathProgramCache]: Analyzing trace with hash 499316572, now seen corresponding path program 1 times [2022-11-20 10:30:53,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:53,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435077435] [2022-11-20 10:30:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:53,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-20 10:30:53,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435077435] [2022-11-20 10:30:53,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435077435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:53,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:53,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:53,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646499651] [2022-11-20 10:30:53,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:53,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:53,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:53,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:53,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:53,435 INFO L87 Difference]: Start difference. First operand 19321 states and 22304 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 10:30:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:56,886 INFO L93 Difference]: Finished difference Result 50546 states and 58025 transitions. [2022-11-20 10:30:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 291 [2022-11-20 10:30:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:56,949 INFO L225 Difference]: With dead ends: 50546 [2022-11-20 10:30:56,949 INFO L226 Difference]: Without dead ends: 30794 [2022-11-20 10:30:56,966 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 10:30:56,967 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 450 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:56,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 420 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 10:30:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30794 states. [2022-11-20 10:30:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30794 to 28239. [2022-11-20 10:30:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28239 states, 28238 states have (on average 1.12929385933848) internal successors, (31889), 28238 states have internal predecessors, (31889), 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 10:30:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28239 states to 28239 states and 31889 transitions. [2022-11-20 10:30:57,422 INFO L78 Accepts]: Start accepts. Automaton has 28239 states and 31889 transitions. Word has length 291 [2022-11-20 10:30:57,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:57,423 INFO L495 AbstractCegarLoop]: Abstraction has 28239 states and 31889 transitions. [2022-11-20 10:30:57,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 10:30:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 28239 states and 31889 transitions. [2022-11-20 10:30:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-20 10:30:57,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:57,433 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 10:30:57,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:30:57,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:57,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash 530058454, now seen corresponding path program 1 times [2022-11-20 10:30:57,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:57,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931444676] [2022-11-20 10:30:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 10:30:57,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:57,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931444676] [2022-11-20 10:30:57,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931444676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:57,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:57,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:57,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695273666] [2022-11-20 10:30:57,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:57,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:57,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:57,980 INFO L87 Difference]: Start difference. First operand 28239 states and 31889 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 10:31:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:01,048 INFO L93 Difference]: Finished difference Result 66262 states and 75098 transitions. [2022-11-20 10:31:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:31:01,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 309 [2022-11-20 10:31:01,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:01,102 INFO L225 Difference]: With dead ends: 66262 [2022-11-20 10:31:01,102 INFO L226 Difference]: Without dead ends: 36748 [2022-11-20 10:31:01,124 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 10:31:01,125 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 342 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:01,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 776 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 10:31:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36748 states. [2022-11-20 10:31:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36748 to 35471. [2022-11-20 10:31:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35471 states, 35470 states have (on average 1.1106287003101212) internal successors, (39394), 35470 states have internal predecessors, (39394), 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 10:31:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 39394 transitions. [2022-11-20 10:31:01,840 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 39394 transitions. Word has length 309 [2022-11-20 10:31:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:01,841 INFO L495 AbstractCegarLoop]: Abstraction has 35471 states and 39394 transitions. [2022-11-20 10:31:01,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 10:31:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 39394 transitions. [2022-11-20 10:31:01,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-20 10:31:01,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:01,849 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:01,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:31:01,850 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2093736345, now seen corresponding path program 1 times [2022-11-20 10:31:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:01,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880608008] [2022-11-20 10:31:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:01,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 313 proven. 73 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-20 10:31:02,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:02,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880608008] [2022-11-20 10:31:02,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880608008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:31:02,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763818381] [2022-11-20 10:31:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:02,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:02,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:02,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:31:02,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:31:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:02,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:31:02,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:31:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 313 proven. 73 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-20 10:31:03,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:31:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-20 10:31:03,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763818381] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:31:03,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:31:03,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-20 10:31:03,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839804228] [2022-11-20 10:31:03,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:03,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:31:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:03,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:31:03,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:31:03,721 INFO L87 Difference]: Start difference. First operand 35471 states and 39394 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 10:31:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:09,342 INFO L93 Difference]: Finished difference Result 85427 states and 94984 transitions. [2022-11-20 10:31:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:31:09,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 317 [2022-11-20 10:31:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:09,400 INFO L225 Difference]: With dead ends: 85427 [2022-11-20 10:31:09,400 INFO L226 Difference]: Without dead ends: 49531 [2022-11-20 10:31:09,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 629 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:31:09,426 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 880 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:09,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 173 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 10:31:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49531 states. [2022-11-20 10:31:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49531 to 46978. [2022-11-20 10:31:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46978 states, 46977 states have (on average 1.1148647210336973) internal successors, (52373), 46977 states have internal predecessors, (52373), 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 10:31:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46978 states to 46978 states and 52373 transitions. [2022-11-20 10:31:10,246 INFO L78 Accepts]: Start accepts. Automaton has 46978 states and 52373 transitions. Word has length 317 [2022-11-20 10:31:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:10,246 INFO L495 AbstractCegarLoop]: Abstraction has 46978 states and 52373 transitions. [2022-11-20 10:31:10,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 10:31:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 46978 states and 52373 transitions. [2022-11-20 10:31:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-20 10:31:10,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:10,255 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-20 10:31:10,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:31:10,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:31:10,461 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:10,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1144793932, now seen corresponding path program 1 times [2022-11-20 10:31:10,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:10,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541283107] [2022-11-20 10:31:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:10,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-20 10:31:10,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:10,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541283107] [2022-11-20 10:31:10,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541283107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:10,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:10,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:31:10,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836575665] [2022-11-20 10:31:10,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:10,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:31:10,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:31:10,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:31:10,959 INFO L87 Difference]: Start difference. First operand 46978 states and 52373 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 10:31:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:15,239 INFO L93 Difference]: Finished difference Result 114426 states and 127136 transitions. [2022-11-20 10:31:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:31:15,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 415 [2022-11-20 10:31:15,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:15,357 INFO L225 Difference]: With dead ends: 114426 [2022-11-20 10:31:15,357 INFO L226 Difference]: Without dead ends: 67024 [2022-11-20 10:31:15,608 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 10:31:15,608 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 472 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:15,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 348 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 10:31:15,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67024 states. [2022-11-20 10:31:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67024 to 65710. [2022-11-20 10:31:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65710 states, 65709 states have (on average 1.1053584744859912) internal successors, (72632), 65709 states have internal predecessors, (72632), 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 10:31:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65710 states to 65710 states and 72632 transitions. [2022-11-20 10:31:16,640 INFO L78 Accepts]: Start accepts. Automaton has 65710 states and 72632 transitions. Word has length 415 [2022-11-20 10:31:16,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:16,641 INFO L495 AbstractCegarLoop]: Abstraction has 65710 states and 72632 transitions. [2022-11-20 10:31:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 10:31:16,642 INFO L276 IsEmpty]: Start isEmpty. Operand 65710 states and 72632 transitions. [2022-11-20 10:31:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-11-20 10:31:16,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:16,679 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-20 10:31:16,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:31:16,680 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1100011165, now seen corresponding path program 1 times [2022-11-20 10:31:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:16,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025702041] [2022-11-20 10:31:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:16,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-11-20 10:31:17,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:17,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025702041] [2022-11-20 10:31:17,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025702041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:17,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:17,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:31:17,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950515511] [2022-11-20 10:31:17,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:17,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:31:17,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:17,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:31:17,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:31:17,470 INFO L87 Difference]: Start difference. First operand 65710 states and 72632 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 10:31:21,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:21,343 INFO L93 Difference]: Finished difference Result 145895 states and 161356 transitions. [2022-11-20 10:31:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:31:21,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 442 [2022-11-20 10:31:21,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:21,464 INFO L225 Difference]: With dead ends: 145895 [2022-11-20 10:31:21,464 INFO L226 Difference]: Without dead ends: 79761 [2022-11-20 10:31:21,499 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 10:31:21,500 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 489 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:21,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 301 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 10:31:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79761 states. [2022-11-20 10:31:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79761 to 60579. [2022-11-20 10:31:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60579 states, 60578 states have (on average 1.1075142791112285) internal successors, (67091), 60578 states have internal predecessors, (67091), 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 10:31:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60579 states to 60579 states and 67091 transitions. [2022-11-20 10:31:22,685 INFO L78 Accepts]: Start accepts. Automaton has 60579 states and 67091 transitions. Word has length 442 [2022-11-20 10:31:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:22,685 INFO L495 AbstractCegarLoop]: Abstraction has 60579 states and 67091 transitions. [2022-11-20 10:31:22,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 10:31:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 60579 states and 67091 transitions. [2022-11-20 10:31:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-11-20 10:31:22,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:22,701 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:31:22,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:31:22,702 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:22,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:22,703 INFO L85 PathProgramCache]: Analyzing trace with hash -63934917, now seen corresponding path program 1 times [2022-11-20 10:31:22,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:22,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641038252] [2022-11-20 10:31:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:22,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-20 10:31:23,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:23,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641038252] [2022-11-20 10:31:23,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641038252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:23,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:23,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:31:23,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189372456] [2022-11-20 10:31:23,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:23,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:31:23,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:23,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:31:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:31:23,636 INFO L87 Difference]: Start difference. First operand 60579 states and 67091 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 10:31:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:27,342 INFO L93 Difference]: Finished difference Result 133504 states and 147828 transitions. [2022-11-20 10:31:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:31:27,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 454 [2022-11-20 10:31:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:27,452 INFO L225 Difference]: With dead ends: 133504 [2022-11-20 10:31:27,452 INFO L226 Difference]: Without dead ends: 72495 [2022-11-20 10:31:27,472 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 10:31:27,474 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 502 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:27,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 169 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 10:31:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72495 states. [2022-11-20 10:31:28,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72495 to 69501. [2022-11-20 10:31:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69501 states, 69500 states have (on average 1.1070071942446043) internal successors, (76937), 69500 states have internal predecessors, (76937), 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 10:31:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69501 states to 69501 states and 76937 transitions. [2022-11-20 10:31:28,744 INFO L78 Accepts]: Start accepts. Automaton has 69501 states and 76937 transitions. Word has length 454 [2022-11-20 10:31:28,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:28,745 INFO L495 AbstractCegarLoop]: Abstraction has 69501 states and 76937 transitions. [2022-11-20 10:31:28,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 10:31:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 69501 states and 76937 transitions. [2022-11-20 10:31:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-11-20 10:31:28,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:28,755 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:31:28,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:31:28,756 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:28,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1567427203, now seen corresponding path program 1 times [2022-11-20 10:31:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:28,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846229180] [2022-11-20 10:31:28,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:28,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:29,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:29,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846229180] [2022-11-20 10:31:29,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846229180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:29,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:29,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:31:29,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210563683] [2022-11-20 10:31:29,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:29,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:31:29,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:29,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:31:29,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:31:29,932 INFO L87 Difference]: Start difference. First operand 69501 states and 76937 transitions. Second operand has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 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 10:31:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:35,345 INFO L93 Difference]: Finished difference Result 164575 states and 182145 transitions. [2022-11-20 10:31:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:31:35,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 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 475 [2022-11-20 10:31:35,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:35,465 INFO L225 Difference]: With dead ends: 164575 [2022-11-20 10:31:35,465 INFO L226 Difference]: Without dead ends: 95076 [2022-11-20 10:31:35,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 10:31:35,503 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 646 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:35,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 166 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 10:31:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95076 states. [2022-11-20 10:31:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95076 to 89537. [2022-11-20 10:31:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89537 states, 89536 states have (on average 1.1079342387419586) internal successors, (99200), 89536 states have internal predecessors, (99200), 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 10:31:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89537 states to 89537 states and 99200 transitions. [2022-11-20 10:31:37,019 INFO L78 Accepts]: Start accepts. Automaton has 89537 states and 99200 transitions. Word has length 475 [2022-11-20 10:31:37,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:37,020 INFO L495 AbstractCegarLoop]: Abstraction has 89537 states and 99200 transitions. [2022-11-20 10:31:37,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 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 10:31:37,021 INFO L276 IsEmpty]: Start isEmpty. Operand 89537 states and 99200 transitions. [2022-11-20 10:31:37,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-11-20 10:31:37,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:37,037 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:37,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:31:37,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1379758595, now seen corresponding path program 1 times [2022-11-20 10:31:37,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004213039] [2022-11-20 10:31:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:31:39,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:39,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004213039] [2022-11-20 10:31:39,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004213039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:31:39,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645041644] [2022-11-20 10:31:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:39,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:39,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:39,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:31:39,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:31:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:39,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:31:39,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:31:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:31:40,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:31:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:31:43,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645041644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:31:43,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:31:43,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-20 10:31:43,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394336981] [2022-11-20 10:31:43,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:31:43,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:31:43,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:43,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:31:43,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:31:43,114 INFO L87 Difference]: Start difference. First operand 89537 states and 99200 transitions. Second operand has 8 states, 8 states have (on average 120.75) internal successors, (966), 7 states have internal predecessors, (966), 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 10:31:53,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:53,672 INFO L93 Difference]: Finished difference Result 204184 states and 226147 transitions. [2022-11-20 10:31:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:31:53,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 120.75) internal successors, (966), 7 states have internal predecessors, (966), 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 518 [2022-11-20 10:31:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:53,809 INFO L225 Difference]: With dead ends: 204184 [2022-11-20 10:31:53,809 INFO L226 Difference]: Without dead ends: 113799 [2022-11-20 10:31:53,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:31:53,847 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 3711 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4580 mSolverCounterSat, 1220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3711 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 5800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1220 IncrementalHoareTripleChecker+Valid, 4580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:53,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3711 Valid, 239 Invalid, 5800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1220 Valid, 4580 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-20 10:31:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113799 states. [2022-11-20 10:31:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113799 to 104420. [2022-11-20 10:31:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104420 states, 104419 states have (on average 1.1082370066750304) internal successors, (115721), 104419 states have internal predecessors, (115721), 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 10:31:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104420 states to 104420 states and 115721 transitions. [2022-11-20 10:31:55,736 INFO L78 Accepts]: Start accepts. Automaton has 104420 states and 115721 transitions. Word has length 518 [2022-11-20 10:31:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:55,736 INFO L495 AbstractCegarLoop]: Abstraction has 104420 states and 115721 transitions. [2022-11-20 10:31:55,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.75) internal successors, (966), 7 states have internal predecessors, (966), 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 10:31:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 104420 states and 115721 transitions. [2022-11-20 10:31:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2022-11-20 10:31:55,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:55,746 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:31:55,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:31:55,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68097bbc-1e73-4673-b4fd-f21f19223114/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 10:31:55,950 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:55,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1004549033, now seen corresponding path program 1 times [2022-11-20 10:31:55,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:55,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697743524] [2022-11-20 10:31:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:55,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-20 10:31:57,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:57,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697743524] [2022-11-20 10:31:57,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697743524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:57,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:57,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:31:57,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969840297] [2022-11-20 10:31:57,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:57,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:31:57,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:57,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:31:57,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:31:57,541 INFO L87 Difference]: Start difference. First operand 104420 states and 115721 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 10:32:01,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:01,028 INFO L93 Difference]: Finished difference Result 208833 states and 231435 transitions. [2022-11-20 10:32:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:01,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 523 [2022-11-20 10:32:01,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:01,167 INFO L225 Difference]: With dead ends: 208833 [2022-11-20 10:32:01,167 INFO L226 Difference]: Without dead ends: 104414 [2022-11-20 10:32:01,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 10:32:01,205 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 608 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:01,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 556 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 10:32:01,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104414 states. [2022-11-20 10:32:02,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104414 to 104410. [2022-11-20 10:32:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104410 states, 104409 states have (on average 1.1076822879253705) internal successors, (115652), 104409 states have internal predecessors, (115652), 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 10:32:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104410 states to 104410 states and 115652 transitions. [2022-11-20 10:32:03,360 INFO L78 Accepts]: Start accepts. Automaton has 104410 states and 115652 transitions. Word has length 523 [2022-11-20 10:32:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:03,375 INFO L495 AbstractCegarLoop]: Abstraction has 104410 states and 115652 transitions. [2022-11-20 10:32:03,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 10:32:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 104410 states and 115652 transitions. [2022-11-20 10:32:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-11-20 10:32:03,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:03,414 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:32:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:32:03,416 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1874865253, now seen corresponding path program 1 times [2022-11-20 10:32:03,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:03,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712190606] [2022-11-20 10:32:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:03,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 10:32:04,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:04,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712190606] [2022-11-20 10:32:04,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712190606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:04,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:04,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:32:04,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947706414] [2022-11-20 10:32:04,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:04,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:04,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:04,351 INFO L87 Difference]: Start difference. First operand 104410 states and 115652 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 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 10:32:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:10,454 INFO L93 Difference]: Finished difference Result 234804 states and 259780 transitions. [2022-11-20 10:32:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:32:10,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 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 604 [2022-11-20 10:32:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:10,630 INFO L225 Difference]: With dead ends: 234804 [2022-11-20 10:32:10,630 INFO L226 Difference]: Without dead ends: 130396 [2022-11-20 10:32:10,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 10:32:10,678 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 563 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:10,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 667 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 10:32:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130396 states. [2022-11-20 10:32:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130396 to 126118. [2022-11-20 10:32:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126118 states, 126117 states have (on average 1.1072892631445403) internal successors, (139648), 126117 states have internal predecessors, (139648), 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 10:32:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126118 states to 126118 states and 139648 transitions. [2022-11-20 10:32:13,086 INFO L78 Accepts]: Start accepts. Automaton has 126118 states and 139648 transitions. Word has length 604 [2022-11-20 10:32:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:13,087 INFO L495 AbstractCegarLoop]: Abstraction has 126118 states and 139648 transitions. [2022-11-20 10:32:13,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 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 10:32:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 126118 states and 139648 transitions. [2022-11-20 10:32:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2022-11-20 10:32:13,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:13,103 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:32:13,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:32:13,103 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:13,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1557473164, now seen corresponding path program 1 times [2022-11-20 10:32:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:13,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660229240] [2022-11-20 10:32:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:13,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-20 10:32:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:13,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660229240] [2022-11-20 10:32:13,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660229240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:13,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:13,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:32:13,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211672721] [2022-11-20 10:32:13,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:13,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:13,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:13,934 INFO L87 Difference]: Start difference. First operand 126118 states and 139648 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 2 states have internal predecessors, (414), 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 10:32:16,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:16,568 INFO L93 Difference]: Finished difference Result 246686 states and 272612 transitions. [2022-11-20 10:32:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:16,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 2 states have internal predecessors, (414), 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 615 [2022-11-20 10:32:16,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:16,709 INFO L225 Difference]: With dead ends: 246686 [2022-11-20 10:32:16,710 INFO L226 Difference]: Without dead ends: 120570 [2022-11-20 10:32:16,744 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 10:32:16,745 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 434 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:16,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 101 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 10:32:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120570 states. [2022-11-20 10:32:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120570 to 120564. [2022-11-20 10:32:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120564 states, 120563 states have (on average 1.1026434312351219) internal successors, (132938), 120563 states have internal predecessors, (132938), 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 10:32:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120564 states to 120564 states and 132938 transitions. [2022-11-20 10:32:19,180 INFO L78 Accepts]: Start accepts. Automaton has 120564 states and 132938 transitions. Word has length 615 [2022-11-20 10:32:19,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:19,181 INFO L495 AbstractCegarLoop]: Abstraction has 120564 states and 132938 transitions. [2022-11-20 10:32:19,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 2 states have internal predecessors, (414), 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 10:32:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 120564 states and 132938 transitions. [2022-11-20 10:32:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-11-20 10:32:19,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:19,199 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2022-11-20 10:32:19,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:32:19,200 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:19,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1519841183, now seen corresponding path program 1 times [2022-11-20 10:32:19,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:19,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086199751] [2022-11-20 10:32:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:19,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-20 10:32:20,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:20,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086199751] [2022-11-20 10:32:20,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086199751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:20,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:20,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:32:20,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490764742] [2022-11-20 10:32:20,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:20,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:20,433 INFO L87 Difference]: Start difference. First operand 120564 states and 132938 transitions. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 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 10:32:26,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:26,553 INFO L93 Difference]: Finished difference Result 264560 states and 291126 transitions. [2022-11-20 10:32:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:32:26,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 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 648 [2022-11-20 10:32:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:26,705 INFO L225 Difference]: With dead ends: 264560 [2022-11-20 10:32:26,706 INFO L226 Difference]: Without dead ends: 142719 [2022-11-20 10:32:26,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 10:32:26,775 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 766 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:26,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 153 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 10:32:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142719 states. [2022-11-20 10:32:29,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142719 to 132901. [2022-11-20 10:32:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132901 states, 132900 states have (on average 1.1031000752445448) internal successors, (146602), 132900 states have internal predecessors, (146602), 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 10:32:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132901 states to 132901 states and 146602 transitions. [2022-11-20 10:32:29,631 INFO L78 Accepts]: Start accepts. Automaton has 132901 states and 146602 transitions. Word has length 648 [2022-11-20 10:32:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:29,632 INFO L495 AbstractCegarLoop]: Abstraction has 132901 states and 146602 transitions. [2022-11-20 10:32:29,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 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 10:32:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 132901 states and 146602 transitions. [2022-11-20 10:32:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2022-11-20 10:32:29,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:29,656 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:32:29,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:32:29,657 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:29,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash 517758705, now seen corresponding path program 1 times [2022-11-20 10:32:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:29,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195786765] [2022-11-20 10:32:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-20 10:32:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:31,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195786765] [2022-11-20 10:32:31,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195786765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:31,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:31,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:32:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336533121] [2022-11-20 10:32:31,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:31,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:31,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:31,466 INFO L87 Difference]: Start difference. First operand 132901 states and 146602 transitions. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 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 10:32:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:37,539 INFO L93 Difference]: Finished difference Result 277308 states and 305726 transitions. [2022-11-20 10:32:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:32:37,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 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 667 [2022-11-20 10:32:37,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:37,805 INFO L225 Difference]: With dead ends: 277308 [2022-11-20 10:32:37,806 INFO L226 Difference]: Without dead ends: 143981 [2022-11-20 10:32:37,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 10:32:37,888 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1235 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:37,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 648 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 10:32:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143981 states.