./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.4.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro --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 64bit --witnessprinter.graph.data.programhash d560f839e38a458feb6c918e4e4c0a931ee4ba6daeba6c4fc3aa19781522de21 --- 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-8393723 [2022-11-18 19:34:14,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:34:14,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:34:14,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:34:14,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:34:14,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:34:14,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:34:14,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:34:14,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:34:14,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:34:14,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:34:14,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:34:14,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:34:14,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:34:14,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:34:14,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:34:14,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:34:14,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:34:14,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:34:14,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:34:14,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:34:14,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:34:14,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:34:14,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:34:14,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:34:14,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:34:14,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:34:14,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:34:14,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:34:14,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:34:14,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:34:14,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:34:14,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:34:14,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:34:14,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:34:14,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:34:14,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:34:14,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:34:14,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:34:14,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:34:14,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:34:14,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:34:14,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:34:14,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:34:14,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:34:14,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:34:14,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:34:14,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:34:14,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:34:14,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:34:14,515 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:34:14,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:34:14,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:34:14,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:34:14,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:34:14,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:34:14,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:34:14,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:34:14,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:34:14,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:34:14,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:34:14,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:34:14,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:34:14,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:34:14,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:34:14,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:34:14,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:34:14,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:34:14,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:34:14,522 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:34:14,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:34:14,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:34:14,523 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_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d560f839e38a458feb6c918e4e4c0a931ee4ba6daeba6c4fc3aa19781522de21 [2022-11-18 19:34:14,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:34:14,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:34:14,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:34:14,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:34:14,837 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:34:14,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.4.prop1-back-serstep.c [2022-11-18 19:34:14,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/data/c69aa38b5/bcff826c02ff42aaa4a4ec12108f8170/FLAG1ed263fa2 [2022-11-18 19:34:15,712 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:34:15,712 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.4.prop1-back-serstep.c [2022-11-18 19:34:15,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/data/c69aa38b5/bcff826c02ff42aaa4a4ec12108f8170/FLAG1ed263fa2 [2022-11-18 19:34:15,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/data/c69aa38b5/bcff826c02ff42aaa4a4ec12108f8170 [2022-11-18 19:34:15,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:34:15,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:34:15,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:15,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:34:15,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:34:15,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:15" (1/1) ... [2022-11-18 19:34:15,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25624ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:15, skipping insertion in model container [2022-11-18 19:34:15,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:15" (1/1) ... [2022-11-18 19:34:15,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:34:15,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:34:16,210 WARN L234 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_97cf4920-f7f4-4798-996a-60c045f2eddd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.4.prop1-back-serstep.c[1014,1027] [2022-11-18 19:34:16,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:16,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:34:16,754 WARN L234 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_97cf4920-f7f4-4798-996a-60c045f2eddd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.4.prop1-back-serstep.c[1014,1027] [2022-11-18 19:34:16,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:16,978 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:34:16,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16 WrapperNode [2022-11-18 19:34:16,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:16,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:16,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:34:16,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:34:16,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,264 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4529 [2022-11-18 19:34:17,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:17,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:34:17,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:34:17,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:34:17,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,494 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:34:17,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:34:17,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:34:17,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:34:17,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (1/1) ... [2022-11-18 19:34:17,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:34:17,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:17,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:34:17,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:34:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:34:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:34:18,254 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:34:18,256 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:34:24,028 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:34:24,047 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:34:24,048 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:34:24,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:24 BoogieIcfgContainer [2022-11-18 19:34:24,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:34:24,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:34:24,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:34:24,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:34:24,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:34:15" (1/3) ... [2022-11-18 19:34:24,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181c990a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:24, skipping insertion in model container [2022-11-18 19:34:24,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:16" (2/3) ... [2022-11-18 19:34:24,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181c990a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:24, skipping insertion in model container [2022-11-18 19:34:24,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:24" (3/3) ... [2022-11-18 19:34:24,061 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.4.prop1-back-serstep.c [2022-11-18 19:34:24,081 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:34:24,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:34:24,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:34:24,203 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;@6b8a9730, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:34:24,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:34:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 767 states, 765 states have (on average 1.6640522875816994) internal successors, (1273), 766 states have internal predecessors, (1273), 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) [2022-11-18 19:34:24,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-18 19:34:24,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:24,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:24,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1976997793, now seen corresponding path program 1 times [2022-11-18 19:34:24,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:24,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543025125] [2022-11-18 19:34:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:25,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543025125] [2022-11-18 19:34:25,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543025125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:25,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:25,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:34:25,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173949981] [2022-11-18 19:34:25,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:25,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:34:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:25,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:34:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:34:25,859 INFO L87 Difference]: Start difference. First operand has 767 states, 765 states have (on average 1.6640522875816994) internal successors, (1273), 766 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2022-11-18 19:34:26,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:26,396 INFO L93 Difference]: Finished difference Result 2551 states and 4247 transitions. [2022-11-18 19:34:26,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:26,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 181 [2022-11-18 19:34:26,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:26,437 INFO L225 Difference]: With dead ends: 2551 [2022-11-18 19:34:26,437 INFO L226 Difference]: Without dead ends: 1786 [2022-11-18 19:34:26,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:26,450 INFO L413 NwaCegarLoop]: 1705 mSDtfsCounter, 3777 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3777 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:26,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3777 Valid, 3843 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:34:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-11-18 19:34:26,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 765. [2022-11-18 19:34:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.6609947643979057) internal successors, (1269), 764 states have internal predecessors, (1269), 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) [2022-11-18 19:34:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1269 transitions. [2022-11-18 19:34:26,557 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1269 transitions. Word has length 181 [2022-11-18 19:34:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:26,560 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1269 transitions. [2022-11-18 19:34:26,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2022-11-18 19:34:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1269 transitions. [2022-11-18 19:34:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-18 19:34:26,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:26,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:26,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:34:26,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:26,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1159115443, now seen corresponding path program 1 times [2022-11-18 19:34:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:26,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986738238] [2022-11-18 19:34:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:27,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:27,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986738238] [2022-11-18 19:34:27,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986738238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:27,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:27,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:34:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244639347] [2022-11-18 19:34:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:27,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:34:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:27,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:34:27,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:34:27,600 INFO L87 Difference]: Start difference. First operand 765 states and 1269 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-18 19:34:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:28,918 INFO L93 Difference]: Finished difference Result 3041 states and 5054 transitions. [2022-11-18 19:34:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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 182 [2022-11-18 19:34:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:28,934 INFO L225 Difference]: With dead ends: 3041 [2022-11-18 19:34:28,934 INFO L226 Difference]: Without dead ends: 2278 [2022-11-18 19:34:28,937 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 [2022-11-18 19:34:28,938 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 3166 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:28,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 4221 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:34:28,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2022-11-18 19:34:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1028. [2022-11-18 19:34:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 1.6611489776046737) internal successors, (1706), 1027 states have internal predecessors, (1706), 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) [2022-11-18 19:34:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1706 transitions. [2022-11-18 19:34:28,970 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1706 transitions. Word has length 182 [2022-11-18 19:34:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:28,971 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1706 transitions. [2022-11-18 19:34:28,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2022-11-18 19:34:28,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1706 transitions. [2022-11-18 19:34:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2022-11-18 19:34:28,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:28,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:28,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:34:28,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash -171033099, now seen corresponding path program 1 times [2022-11-18 19:34:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:28,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468401680] [2022-11-18 19:34:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:28,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:29,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:29,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347588784] [2022-11-18 19:34:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:29,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:29,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:29,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:29,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:34:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-18 19:34:31,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:35,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-18 19:34:37,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:37,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468401680] [2022-11-18 19:34:37,372 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:37,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347588784] [2022-11-18 19:34:37,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347588784] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:37,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:37,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-18 19:34:37,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451826222] [2022-11-18 19:34:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:37,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:34:37,383 INFO L87 Difference]: Start difference. First operand 1028 states and 1706 transitions. Second operand has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2022-11-18 19:34:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:43,405 INFO L93 Difference]: Finished difference Result 3305 states and 5487 transitions. [2022-11-18 19:34:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:34:43,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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 689 [2022-11-18 19:34:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:43,420 INFO L225 Difference]: With dead ends: 3305 [2022-11-18 19:34:43,421 INFO L226 Difference]: Without dead ends: 3303 [2022-11-18 19:34:43,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1386 GetRequests, 1370 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:34:43,423 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 12567 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 3231 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12567 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 3238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:43,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12567 Valid, 2324 Invalid, 3238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 3231 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-18 19:34:43,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2022-11-18 19:34:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 1031. [2022-11-18 19:34:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 1.6611650485436893) internal successors, (1711), 1030 states have internal predecessors, (1711), 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) [2022-11-18 19:34:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1711 transitions. [2022-11-18 19:34:43,461 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1711 transitions. Word has length 689 [2022-11-18 19:34:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:43,462 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1711 transitions. [2022-11-18 19:34:43,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2022-11-18 19:34:43,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1711 transitions. [2022-11-18 19:34:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2022-11-18 19:34:43,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:43,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:43,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:43,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:43,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:43,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash -170973517, now seen corresponding path program 1 times [2022-11-18 19:34:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:43,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449921894] [2022-11-18 19:34:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:43,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:43,946 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:43,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347185310] [2022-11-18 19:34:43,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:43,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:43,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:43,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:43,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:34:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:46,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 5695 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 19:34:46,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:52,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:58,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:58,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449921894] [2022-11-18 19:34:58,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:58,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347185310] [2022-11-18 19:34:58,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347185310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:58,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:34:58,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-18 19:34:58,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756282250] [2022-11-18 19:34:58,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:58,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:58,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:58,456 INFO L87 Difference]: Start difference. First operand 1031 states and 1711 transitions. Second operand has 16 states, 16 states have (on average 85.75) internal successors, (1372), 16 states have internal predecessors, (1372), 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) [2022-11-18 19:35:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:05,745 INFO L93 Difference]: Finished difference Result 5672 states and 9416 transitions. [2022-11-18 19:35:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:35:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 85.75) internal successors, (1372), 16 states have internal predecessors, (1372), 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 689 [2022-11-18 19:35:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:05,763 INFO L225 Difference]: With dead ends: 5672 [2022-11-18 19:35:05,763 INFO L226 Difference]: Without dead ends: 4906 [2022-11-18 19:35:05,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1398 GetRequests, 1362 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=421, Invalid=985, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:35:05,767 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 20832 mSDsluCounter, 13455 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20832 SdHoareTripleChecker+Valid, 15796 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:05,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20832 Valid, 15796 Invalid, 1174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-18 19:35:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4906 states. [2022-11-18 19:35:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4906 to 1788. [2022-11-18 19:35:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1787 states have (on average 1.6614437604924455) internal successors, (2969), 1787 states have internal predecessors, (2969), 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) [2022-11-18 19:35:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2969 transitions. [2022-11-18 19:35:05,828 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2969 transitions. Word has length 689 [2022-11-18 19:35:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:05,830 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2969 transitions. [2022-11-18 19:35:05,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 85.75) internal successors, (1372), 16 states have internal predecessors, (1372), 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) [2022-11-18 19:35:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2969 transitions. [2022-11-18 19:35:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2022-11-18 19:35:05,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:05,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:05,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:06,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:06,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:06,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1145691597, now seen corresponding path program 1 times [2022-11-18 19:35:06,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:06,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913115445] [2022-11-18 19:35:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:06,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:06,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:06,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094506861] [2022-11-18 19:35:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:06,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:06,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:06,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:06,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:35:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:08,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 5698 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 19:35:08,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:14,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-18 19:35:16,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:16,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913115445] [2022-11-18 19:35:16,120 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:16,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094506861] [2022-11-18 19:35:16,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094506861] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:16,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:35:16,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-18 19:35:16,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557599952] [2022-11-18 19:35:16,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:16,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:35:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:35:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:35:16,131 INFO L87 Difference]: Start difference. First operand 1788 states and 2969 transitions. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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) [2022-11-18 19:35:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:22,750 INFO L93 Difference]: Finished difference Result 6335 states and 10525 transitions. [2022-11-18 19:35:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:35:22,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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 690 [2022-11-18 19:35:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:22,769 INFO L225 Difference]: With dead ends: 6335 [2022-11-18 19:35:22,769 INFO L226 Difference]: Without dead ends: 5569 [2022-11-18 19:35:22,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1382 GetRequests, 1371 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:35:22,773 INFO L413 NwaCegarLoop]: 1242 mSDtfsCounter, 6284 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 5485 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6284 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 5489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:22,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6284 Valid, 3406 Invalid, 5489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 5485 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-18 19:35:22,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2022-11-18 19:35:22,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 1788. [2022-11-18 19:35:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1787 states have (on average 1.6608841634023503) internal successors, (2968), 1787 states have internal predecessors, (2968), 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) [2022-11-18 19:35:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2968 transitions. [2022-11-18 19:35:22,837 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2968 transitions. Word has length 690 [2022-11-18 19:35:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:22,838 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2968 transitions. [2022-11-18 19:35:22,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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) [2022-11-18 19:35:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2968 transitions. [2022-11-18 19:35:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2022-11-18 19:35:22,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:22,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:22,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:23,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:23,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:23,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1368979591, now seen corresponding path program 1 times [2022-11-18 19:35:23,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:23,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132495046] [2022-11-18 19:35:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:23,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:23,269 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:23,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73573249] [2022-11-18 19:35:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:23,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:23,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:23,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:23,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:35:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 5701 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-18 19:35:25,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:28,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-18 19:35:30,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:30,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132495046] [2022-11-18 19:35:30,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:30,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73573249] [2022-11-18 19:35:30,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73573249] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:30,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:35:30,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-18 19:35:30,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836331100] [2022-11-18 19:35:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:30,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:35:30,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:35:30,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:35:30,477 INFO L87 Difference]: Start difference. First operand 1788 states and 2968 transitions. Second operand has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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) [2022-11-18 19:35:39,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:39,574 INFO L93 Difference]: Finished difference Result 6351 states and 10542 transitions. [2022-11-18 19:35:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:35:39,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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 691 [2022-11-18 19:35:39,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:39,594 INFO L225 Difference]: With dead ends: 6351 [2022-11-18 19:35:39,594 INFO L226 Difference]: Without dead ends: 6349 [2022-11-18 19:35:39,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1406 GetRequests, 1375 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:35:39,598 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 18871 mSDsluCounter, 3224 mSDsCounter, 0 mSdLazyCounter, 6161 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18871 SdHoareTripleChecker+Valid, 4057 SdHoareTripleChecker+Invalid, 6172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:39,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18871 Valid, 4057 Invalid, 6172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 6161 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-18 19:35:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6349 states. [2022-11-18 19:35:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6349 to 1794. [2022-11-18 19:35:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1793 states have (on average 1.6609035136642498) internal successors, (2978), 1793 states have internal predecessors, (2978), 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) [2022-11-18 19:35:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2978 transitions. [2022-11-18 19:35:39,664 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2978 transitions. Word has length 691 [2022-11-18 19:35:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:39,665 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2978 transitions. [2022-11-18 19:35:39,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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) [2022-11-18 19:35:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2978 transitions. [2022-11-18 19:35:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2022-11-18 19:35:39,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:39,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:39,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:39,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:39,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:39,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:39,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1368920009, now seen corresponding path program 1 times [2022-11-18 19:35:39,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:39,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957924298] [2022-11-18 19:35:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:39,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:40,100 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:40,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178625953] [2022-11-18 19:35:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:40,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:40,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:40,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:40,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:35:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:42,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 5701 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-18 19:35:42,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:45,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-18 19:35:47,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:47,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957924298] [2022-11-18 19:35:47,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:47,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178625953] [2022-11-18 19:35:47,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178625953] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:47,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:35:47,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2022-11-18 19:35:47,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381707849] [2022-11-18 19:35:47,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:47,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:35:47,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:47,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:35:47,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:35:47,450 INFO L87 Difference]: Start difference. First operand 1794 states and 2978 transitions. Second operand has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2022-11-18 19:35:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:47,849 INFO L93 Difference]: Finished difference Result 4849 states and 8049 transitions. [2022-11-18 19:35:47,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:35:47,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 691 [2022-11-18 19:35:47,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:47,861 INFO L225 Difference]: With dead ends: 4849 [2022-11-18 19:35:47,861 INFO L226 Difference]: Without dead ends: 4077 [2022-11-18 19:35:47,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1387 GetRequests, 1375 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:35:47,864 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 5030 mSDsluCounter, 4645 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5030 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:47,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5030 Valid, 6342 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:35:47,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2022-11-18 19:35:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 1788. [2022-11-18 19:35:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1787 states have (on average 1.6608841634023503) internal successors, (2968), 1787 states have internal predecessors, (2968), 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) [2022-11-18 19:35:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2968 transitions. [2022-11-18 19:35:47,912 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2968 transitions. Word has length 691 [2022-11-18 19:35:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:47,914 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2968 transitions. [2022-11-18 19:35:47,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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) [2022-11-18 19:35:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2968 transitions. [2022-11-18 19:35:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2022-11-18 19:35:47,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:47,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:47,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:48,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:48,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:48,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1718186457, now seen corresponding path program 1 times [2022-11-18 19:35:48,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:48,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930810523] [2022-11-18 19:35:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:48,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:48,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768725387] [2022-11-18 19:35:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:48,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:48,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:48,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:48,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:35:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:50,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 5704 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-18 19:35:50,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:53,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 19:35:56,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:56,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930810523] [2022-11-18 19:35:56,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:56,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768725387] [2022-11-18 19:35:56,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768725387] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:56,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:35:56,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-11-18 19:35:56,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296566270] [2022-11-18 19:35:56,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:56,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:35:56,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:56,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:35:56,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:35:56,061 INFO L87 Difference]: Start difference. First operand 1788 states and 2968 transitions. Second operand has 9 states, 9 states have (on average 58.111111111111114) internal successors, (523), 9 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) [2022-11-18 19:36:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:05,768 INFO L93 Difference]: Finished difference Result 6389 states and 10602 transitions. [2022-11-18 19:36:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:36:05,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 58.111111111111114) internal successors, (523), 9 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 692 [2022-11-18 19:36:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:05,780 INFO L225 Difference]: With dead ends: 6389 [2022-11-18 19:36:05,781 INFO L226 Difference]: Without dead ends: 6387 [2022-11-18 19:36:05,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1420 GetRequests, 1381 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 19:36:05,783 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 25229 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 6498 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25229 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 6513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:05,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25229 Valid, 3726 Invalid, 6513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6498 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-18 19:36:05,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6387 states. [2022-11-18 19:36:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6387 to 1797. [2022-11-18 19:36:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 1.660913140311804) internal successors, (2983), 1796 states have internal predecessors, (2983), 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) [2022-11-18 19:36:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2983 transitions. [2022-11-18 19:36:05,837 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2983 transitions. Word has length 692 [2022-11-18 19:36:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:05,838 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2983 transitions. [2022-11-18 19:36:05,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.111111111111114) internal successors, (523), 9 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) [2022-11-18 19:36:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2983 transitions. [2022-11-18 19:36:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2022-11-18 19:36:05,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:05,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:05,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:06,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:06,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:06,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1718246039, now seen corresponding path program 1 times [2022-11-18 19:36:06,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:06,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265523822] [2022-11-18 19:36:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:06,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:06,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672321617] [2022-11-18 19:36:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:06,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:06,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:06,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:36:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 5704 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-18 19:36:08,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:14,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 19:36:16,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:16,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265523822] [2022-11-18 19:36:16,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:16,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672321617] [2022-11-18 19:36:16,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672321617] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:16,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:36:16,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-18 19:36:16,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137794133] [2022-11-18 19:36:16,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:16,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:36:16,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:36:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:36:16,759 INFO L87 Difference]: Start difference. First operand 1797 states and 2983 transitions. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 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) [2022-11-18 19:36:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:25,371 INFO L93 Difference]: Finished difference Result 6421 states and 10654 transitions. [2022-11-18 19:36:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:36:25,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 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 692 [2022-11-18 19:36:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:25,383 INFO L225 Difference]: With dead ends: 6421 [2022-11-18 19:36:25,384 INFO L226 Difference]: Without dead ends: 5641 [2022-11-18 19:36:25,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1404 GetRequests, 1379 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:36:25,388 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 8839 mSDsluCounter, 4637 mSDsCounter, 0 mSdLazyCounter, 8942 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8839 SdHoareTripleChecker+Valid, 5873 SdHoareTripleChecker+Invalid, 8946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:25,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8839 Valid, 5873 Invalid, 8946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 8942 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-18 19:36:25,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2022-11-18 19:36:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 1794. [2022-11-18 19:36:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1793 states have (on average 1.6609035136642498) internal successors, (2978), 1793 states have internal predecessors, (2978), 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) [2022-11-18 19:36:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2978 transitions. [2022-11-18 19:36:25,447 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2978 transitions. Word has length 692 [2022-11-18 19:36:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:25,449 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2978 transitions. [2022-11-18 19:36:25,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 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) [2022-11-18 19:36:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2978 transitions. [2022-11-18 19:36:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2022-11-18 19:36:25,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:25,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:25,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:25,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:25,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:25,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:25,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2141892241, now seen corresponding path program 1 times [2022-11-18 19:36:25,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:25,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032523530] [2022-11-18 19:36:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:25,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:25,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:25,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7442389] [2022-11-18 19:36:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:25,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:25,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:36:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:28,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 5707 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-18 19:36:28,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:31,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 19:36:33,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:33,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032523530] [2022-11-18 19:36:33,983 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:33,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7442389] [2022-11-18 19:36:33,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7442389] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:33,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:36:33,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2022-11-18 19:36:33,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579901972] [2022-11-18 19:36:33,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:33,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:36:33,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:33,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:36:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:36:33,986 INFO L87 Difference]: Start difference. First operand 1794 states and 2978 transitions. Second operand has 10 states, 10 states have (on average 52.6) internal successors, (526), 10 states have internal predecessors, (526), 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) [2022-11-18 19:36:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:45,685 INFO L93 Difference]: Finished difference Result 6458 states and 10710 transitions. [2022-11-18 19:36:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 19:36:45,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 52.6) internal successors, (526), 10 states have internal predecessors, (526), 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 693 [2022-11-18 19:36:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:45,696 INFO L225 Difference]: With dead ends: 6458 [2022-11-18 19:36:45,696 INFO L226 Difference]: Without dead ends: 6456 [2022-11-18 19:36:45,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1390 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=487, Invalid=2269, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 19:36:45,700 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 30300 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 7713 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30300 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 7727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 7713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:45,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30300 Valid, 4226 Invalid, 7727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 7713 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-18 19:36:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2022-11-18 19:36:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 1806. [2022-11-18 19:36:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:36:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:36:45,761 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 693 [2022-11-18 19:36:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:45,762 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:36:45,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 52.6) internal successors, (526), 10 states have internal predecessors, (526), 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) [2022-11-18 19:36:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:36:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2022-11-18 19:36:45,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:45,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:45,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:45,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:45,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2141951823, now seen corresponding path program 1 times [2022-11-18 19:36:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:45,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548769788] [2022-11-18 19:36:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:46,177 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:36:46,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154702616] [2022-11-18 19:36:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:46,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:46,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:46,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:46,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:36:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 5707 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-18 19:36:48,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:55,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 19:36:58,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:58,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548769788] [2022-11-18 19:36:58,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:58,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154702616] [2022-11-18 19:36:58,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154702616] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:58,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:36:58,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 22 [2022-11-18 19:36:58,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153847950] [2022-11-18 19:36:58,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:58,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:36:58,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:58,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:36:58,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:36:58,150 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 9 states, 9 states have (on average 58.44444444444444) internal successors, (526), 9 states have internal predecessors, (526), 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) [2022-11-18 19:37:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:11,711 INFO L93 Difference]: Finished difference Result 12578 states and 20865 transitions. [2022-11-18 19:37:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 19:37:11,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 58.44444444444444) internal successors, (526), 9 states have internal predecessors, (526), 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 693 [2022-11-18 19:37:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:11,733 INFO L225 Difference]: With dead ends: 12578 [2022-11-18 19:37:11,734 INFO L226 Difference]: Without dead ends: 11789 [2022-11-18 19:37:11,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1390 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=472, Invalid=2498, Unknown=0, NotChecked=0, Total=2970 [2022-11-18 19:37:11,740 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 37691 mSDsluCounter, 4227 mSDsCounter, 0 mSdLazyCounter, 8564 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37691 SdHoareTripleChecker+Valid, 5049 SdHoareTripleChecker+Invalid, 8575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 8564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:11,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37691 Valid, 5049 Invalid, 8575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 8564 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-18 19:37:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11789 states. [2022-11-18 19:37:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11789 to 1806. [2022-11-18 19:37:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:37:11,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:37:11,836 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 693 [2022-11-18 19:37:11,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:11,837 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:37:11,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.44444444444444) internal successors, (526), 9 states have internal predecessors, (526), 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) [2022-11-18 19:37:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:37:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2022-11-18 19:37:11,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:11,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:11,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:12,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:12,069 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:12,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash -378008111, now seen corresponding path program 1 times [2022-11-18 19:37:12,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:12,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580065781] [2022-11-18 19:37:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:12,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:12,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:37:12,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803715727] [2022-11-18 19:37:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:12,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:12,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:12,279 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:12,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:37:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:14,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 5707 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-18 19:37:14,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:17,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-18 19:37:19,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:19,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580065781] [2022-11-18 19:37:19,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:37:19,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803715727] [2022-11-18 19:37:19,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803715727] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:19,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:37:19,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2022-11-18 19:37:19,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103680573] [2022-11-18 19:37:19,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:19,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:37:19,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:19,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:37:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:37:19,198 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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) [2022-11-18 19:37:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:19,693 INFO L93 Difference]: Finished difference Result 4942 states and 8200 transitions. [2022-11-18 19:37:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:37:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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 693 [2022-11-18 19:37:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:19,700 INFO L225 Difference]: With dead ends: 4942 [2022-11-18 19:37:19,700 INFO L226 Difference]: Without dead ends: 4153 [2022-11-18 19:37:19,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1403 GetRequests, 1379 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:37:19,704 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 7579 mSDsluCounter, 8031 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7579 SdHoareTripleChecker+Valid, 9724 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:19,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7579 Valid, 9724 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:37:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4153 states. [2022-11-18 19:37:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4153 to 1794. [2022-11-18 19:37:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1793 states have (on average 1.6609035136642498) internal successors, (2978), 1793 states have internal predecessors, (2978), 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) [2022-11-18 19:37:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2978 transitions. [2022-11-18 19:37:19,753 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2978 transitions. Word has length 693 [2022-11-18 19:37:19,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:19,754 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2978 transitions. [2022-11-18 19:37:19,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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) [2022-11-18 19:37:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2978 transitions. [2022-11-18 19:37:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2022-11-18 19:37:19,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:19,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:19,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:19,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:37:19,978 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:19,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2130659839, now seen corresponding path program 1 times [2022-11-18 19:37:19,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:19,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748767663] [2022-11-18 19:37:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:19,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:20,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:37:20,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522048451] [2022-11-18 19:37:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:20,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:20,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:20,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:20,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:37:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:22,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 5710 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-18 19:37:22,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:26,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-18 19:37:28,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:28,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748767663] [2022-11-18 19:37:28,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:37:28,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522048451] [2022-11-18 19:37:28,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522048451] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:28,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:37:28,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2022-11-18 19:37:28,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217291922] [2022-11-18 19:37:28,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:28,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:37:28,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:37:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:37:28,151 INFO L87 Difference]: Start difference. First operand 1794 states and 2978 transitions. Second operand has 11 states, 11 states have (on average 48.09090909090909) internal successors, (529), 11 states have internal predecessors, (529), 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) [2022-11-18 19:37:44,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:44,868 INFO L93 Difference]: Finished difference Result 6502 states and 10785 transitions. [2022-11-18 19:37:44,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 19:37:44,869 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 48.09090909090909) internal successors, (529), 11 states have internal predecessors, (529), 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 694 [2022-11-18 19:37:44,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:44,879 INFO L225 Difference]: With dead ends: 6502 [2022-11-18 19:37:44,879 INFO L226 Difference]: Without dead ends: 6500 [2022-11-18 19:37:44,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1458 GetRequests, 1397 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=672, Invalid=3234, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:37:44,884 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 30327 mSDsluCounter, 4724 mSDsCounter, 0 mSdLazyCounter, 9808 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30327 SdHoareTripleChecker+Valid, 5539 SdHoareTripleChecker+Invalid, 9816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:44,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30327 Valid, 5539 Invalid, 9816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 9808 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2022-11-18 19:37:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6500 states. [2022-11-18 19:37:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6500 to 1809. [2022-11-18 19:37:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.6609513274336283) internal successors, (3003), 1808 states have internal predecessors, (3003), 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) [2022-11-18 19:37:44,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 3003 transitions. [2022-11-18 19:37:44,959 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 3003 transitions. Word has length 694 [2022-11-18 19:37:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:44,960 INFO L495 AbstractCegarLoop]: Abstraction has 1809 states and 3003 transitions. [2022-11-18 19:37:44,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 48.09090909090909) internal successors, (529), 11 states have internal predecessors, (529), 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) [2022-11-18 19:37:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 3003 transitions. [2022-11-18 19:37:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2022-11-18 19:37:44,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:44,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:45,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:45,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:37:45,186 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2130719421, now seen corresponding path program 1 times [2022-11-18 19:37:45,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:45,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182629529] [2022-11-18 19:37:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:45,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:45,367 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:37:45,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776080217] [2022-11-18 19:37:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:45,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:45,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:45,381 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:45,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:37:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:48,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 5710 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 19:37:48,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:55,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-18 19:37:58,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:58,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182629529] [2022-11-18 19:37:58,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:37:58,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776080217] [2022-11-18 19:37:58,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776080217] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:58,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:37:58,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2022-11-18 19:37:58,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878595531] [2022-11-18 19:37:58,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:58,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:37:58,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:58,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:37:58,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:37:58,137 INFO L87 Difference]: Start difference. First operand 1809 states and 3003 transitions. Second operand has 9 states, 9 states have (on average 58.77777777777778) internal successors, (529), 9 states have internal predecessors, (529), 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) [2022-11-18 19:38:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:10,490 INFO L93 Difference]: Finished difference Result 6575 states and 10908 transitions. [2022-11-18 19:38:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:38:10,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 58.77777777777778) internal successors, (529), 9 states have internal predecessors, (529), 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 694 [2022-11-18 19:38:10,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:10,498 INFO L225 Difference]: With dead ends: 6575 [2022-11-18 19:38:10,498 INFO L226 Difference]: Without dead ends: 5777 [2022-11-18 19:38:10,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1389 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=282, Invalid=1358, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 19:38:10,507 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 11424 mSDsluCounter, 6980 mSDsCounter, 0 mSdLazyCounter, 12088 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11424 SdHoareTripleChecker+Valid, 8210 SdHoareTripleChecker+Invalid, 12094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:10,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11424 Valid, 8210 Invalid, 12094 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 12088 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-11-18 19:38:10,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5777 states. [2022-11-18 19:38:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5777 to 1806. [2022-11-18 19:38:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:38:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:38:10,566 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 694 [2022-11-18 19:38:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:10,567 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:38:10,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.77777777777778) internal successors, (529), 9 states have internal predecessors, (529), 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) [2022-11-18 19:38:10,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:38:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2022-11-18 19:38:10,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:10,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:10,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:10,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:38:10,798 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:10,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1733459605, now seen corresponding path program 1 times [2022-11-18 19:38:10,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:10,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962643779] [2022-11-18 19:38:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:10,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:11,002 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:38:11,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371564813] [2022-11-18 19:38:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:11,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:11,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:11,004 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:11,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:38:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:13,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 5713 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-18 19:38:13,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:17,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-18 19:38:19,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:19,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962643779] [2022-11-18 19:38:19,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:38:19,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371564813] [2022-11-18 19:38:19,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371564813] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:19,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:38:19,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2022-11-18 19:38:19,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531599006] [2022-11-18 19:38:19,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:38:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:38:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:38:19,766 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 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) [2022-11-18 19:38:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:36,258 INFO L93 Difference]: Finished difference Result 6650 states and 11026 transitions. [2022-11-18 19:38:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-18 19:38:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 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 695 [2022-11-18 19:38:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:36,267 INFO L225 Difference]: With dead ends: 6650 [2022-11-18 19:38:36,267 INFO L226 Difference]: Without dead ends: 6648 [2022-11-18 19:38:36,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1477 GetRequests, 1406 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=886, Invalid=4370, Unknown=0, NotChecked=0, Total=5256 [2022-11-18 19:38:36,272 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 38012 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 10139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38012 SdHoareTripleChecker+Valid, 5220 SdHoareTripleChecker+Invalid, 10153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 10139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:36,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38012 Valid, 5220 Invalid, 10153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 10139 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2022-11-18 19:38:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6648 states. [2022-11-18 19:38:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6648 to 1824. [2022-11-18 19:38:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1823 states have (on average 1.6609983543609435) internal successors, (3028), 1823 states have internal predecessors, (3028), 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) [2022-11-18 19:38:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 3028 transitions. [2022-11-18 19:38:36,329 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 3028 transitions. Word has length 695 [2022-11-18 19:38:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:36,330 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 3028 transitions. [2022-11-18 19:38:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 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) [2022-11-18 19:38:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 3028 transitions. [2022-11-18 19:38:36,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2022-11-18 19:38:36,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:36,338 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:36,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:36,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:38:36,554 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:36,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1733400023, now seen corresponding path program 1 times [2022-11-18 19:38:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:36,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091854816] [2022-11-18 19:38:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:36,776 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:38:36,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675346401] [2022-11-18 19:38:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:36,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:36,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:36,778 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:36,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:38:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:39,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 5713 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-18 19:38:39,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:42,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-18 19:38:43,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:43,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091854816] [2022-11-18 19:38:43,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:38:43,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675346401] [2022-11-18 19:38:43,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675346401] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:43,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:38:43,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 19 [2022-11-18 19:38:43,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783876251] [2022-11-18 19:38:43,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:43,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:38:43,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:38:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:38:43,693 INFO L87 Difference]: Start difference. First operand 1824 states and 3028 transitions. Second operand has 9 states, 9 states have (on average 59.111111111111114) internal successors, (532), 9 states have internal predecessors, (532), 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) [2022-11-18 19:38:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:44,633 INFO L93 Difference]: Finished difference Result 5082 states and 8432 transitions. [2022-11-18 19:38:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:38:44,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 59.111111111111114) internal successors, (532), 9 states have internal predecessors, (532), 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 695 [2022-11-18 19:38:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:44,637 INFO L225 Difference]: With dead ends: 5082 [2022-11-18 19:38:44,637 INFO L226 Difference]: Without dead ends: 4269 [2022-11-18 19:38:44,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1419 GetRequests, 1386 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:38:44,640 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 10148 mSDsluCounter, 11409 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10148 SdHoareTripleChecker+Valid, 13098 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:44,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10148 Valid, 13098 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:38:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2022-11-18 19:38:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 1806. [2022-11-18 19:38:44,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:38:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:38:44,689 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 695 [2022-11-18 19:38:44,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:44,690 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:38:44,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.111111111111114) internal successors, (532), 9 states have internal predecessors, (532), 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) [2022-11-18 19:38:44,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:38:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-11-18 19:38:44,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:44,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:44,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:44,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:44,914 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1995962723, now seen corresponding path program 1 times [2022-11-18 19:38:44,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:44,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490530051] [2022-11-18 19:38:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:44,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:45,104 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:38:45,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555342294] [2022-11-18 19:38:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:45,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:45,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:45,106 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:45,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:38:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:47,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 5716 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-18 19:38:47,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:51,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-18 19:38:53,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:53,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490530051] [2022-11-18 19:38:53,470 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:38:53,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555342294] [2022-11-18 19:38:53,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555342294] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:53,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:38:53,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2022-11-18 19:38:53,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360830452] [2022-11-18 19:38:53,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:53,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:38:53,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:38:53,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:38:53,473 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 13 states, 13 states have (on average 41.15384615384615) internal successors, (535), 13 states have internal predecessors, (535), 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) [2022-11-18 19:39:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:12,141 INFO L93 Difference]: Finished difference Result 6707 states and 11121 transitions. [2022-11-18 19:39:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 19:39:12,143 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 41.15384615384615) internal successors, (535), 13 states have internal predecessors, (535), 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 696 [2022-11-18 19:39:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:12,151 INFO L225 Difference]: With dead ends: 6707 [2022-11-18 19:39:12,151 INFO L226 Difference]: Without dead ends: 6705 [2022-11-18 19:39:12,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 1412 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1081, Invalid=5399, Unknown=0, NotChecked=0, Total=6480 [2022-11-18 19:39:12,156 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 38131 mSDsluCounter, 5019 mSDsCounter, 0 mSdLazyCounter, 11666 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38131 SdHoareTripleChecker+Valid, 5822 SdHoareTripleChecker+Invalid, 11681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:12,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38131 Valid, 5822 Invalid, 11681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 11666 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-11-18 19:39:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6705 states. [2022-11-18 19:39:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6705 to 1827. [2022-11-18 19:39:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 1.6610076670317635) internal successors, (3033), 1826 states have internal predecessors, (3033), 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) [2022-11-18 19:39:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 3033 transitions. [2022-11-18 19:39:12,219 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 3033 transitions. Word has length 696 [2022-11-18 19:39:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 1827 states and 3033 transitions. [2022-11-18 19:39:12,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.15384615384615) internal successors, (535), 13 states have internal predecessors, (535), 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) [2022-11-18 19:39:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 3033 transitions. [2022-11-18 19:39:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-11-18 19:39:12,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:12,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:12,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:12,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:39:12,443 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:12,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1996022305, now seen corresponding path program 1 times [2022-11-18 19:39:12,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:12,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635041783] [2022-11-18 19:39:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:12,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:12,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:12,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256859778] [2022-11-18 19:39:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:12,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:12,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:12,659 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:12,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:39:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:15,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 5716 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-18 19:39:15,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:18,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-18 19:39:20,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:20,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635041783] [2022-11-18 19:39:20,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:20,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256859778] [2022-11-18 19:39:20,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256859778] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:20,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:39:20,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 22 [2022-11-18 19:39:20,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361994862] [2022-11-18 19:39:20,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:20,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:39:20,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:20,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:39:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:39:20,849 INFO L87 Difference]: Start difference. First operand 1827 states and 3033 transitions. Second operand has 10 states, 10 states have (on average 53.5) internal successors, (535), 10 states have internal predecessors, (535), 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) [2022-11-18 19:39:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:21,872 INFO L93 Difference]: Finished difference Result 5121 states and 8497 transitions. [2022-11-18 19:39:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:39:21,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 53.5) internal successors, (535), 10 states have internal predecessors, (535), 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 696 [2022-11-18 19:39:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:21,877 INFO L225 Difference]: With dead ends: 5121 [2022-11-18 19:39:21,877 INFO L226 Difference]: Without dead ends: 4299 [2022-11-18 19:39:21,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1427 GetRequests, 1388 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=1382, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 19:39:21,880 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 11440 mSDsluCounter, 13095 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11440 SdHoareTripleChecker+Valid, 14782 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:21,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11440 Valid, 14782 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:39:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2022-11-18 19:39:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 1806. [2022-11-18 19:39:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:39:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:39:21,929 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 696 [2022-11-18 19:39:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:21,930 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:39:21,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.5) internal successors, (535), 10 states have internal predecessors, (535), 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) [2022-11-18 19:39:21,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:39:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2022-11-18 19:39:21,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:21,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:21,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-18 19:39:22,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:39:22,146 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:22,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1636497283, now seen corresponding path program 1 times [2022-11-18 19:39:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:22,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366371010] [2022-11-18 19:39:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:22,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:22,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420296406] [2022-11-18 19:39:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:22,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:22,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:22,354 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:22,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:39:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:25,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 5719 conjuncts, 113 conjunts are in the unsatisfiable core [2022-11-18 19:39:25,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:28,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-18 19:39:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:31,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366371010] [2022-11-18 19:39:31,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:31,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420296406] [2022-11-18 19:39:31,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420296406] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:31,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:39:31,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 28 [2022-11-18 19:39:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101146010] [2022-11-18 19:39:31,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:31,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:39:31,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:39:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:39:31,416 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 14 states, 14 states have (on average 38.42857142857143) internal successors, (538), 14 states have internal predecessors, (538), 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) [2022-11-18 19:39:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:55,008 INFO L93 Difference]: Finished difference Result 6722 states and 11149 transitions. [2022-11-18 19:39:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-18 19:39:55,009 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 38.42857142857143) internal successors, (538), 14 states have internal predecessors, (538), 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 697 [2022-11-18 19:39:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:55,015 INFO L225 Difference]: With dead ends: 6722 [2022-11-18 19:39:55,015 INFO L226 Difference]: Without dead ends: 6720 [2022-11-18 19:39:55,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1512 GetRequests, 1421 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2854 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1401, Invalid=7155, Unknown=0, NotChecked=0, Total=8556 [2022-11-18 19:39:55,018 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 38095 mSDsluCounter, 7937 mSDsCounter, 0 mSdLazyCounter, 14667 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38095 SdHoareTripleChecker+Valid, 8734 SdHoareTripleChecker+Invalid, 14674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:55,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38095 Valid, 8734 Invalid, 14674 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7 Valid, 14667 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2022-11-18 19:39:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2022-11-18 19:39:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 1830. [2022-11-18 19:39:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1829 states have (on average 1.6610169491525424) internal successors, (3038), 1829 states have internal predecessors, (3038), 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) [2022-11-18 19:39:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 3038 transitions. [2022-11-18 19:39:55,084 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 3038 transitions. Word has length 697 [2022-11-18 19:39:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:55,085 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 3038 transitions. [2022-11-18 19:39:55,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.42857142857143) internal successors, (538), 14 states have internal predecessors, (538), 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) [2022-11-18 19:39:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 3038 transitions. [2022-11-18 19:39:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2022-11-18 19:39:55,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:55,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:55,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-18 19:39:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:55,318 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1636556865, now seen corresponding path program 1 times [2022-11-18 19:39:55,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:55,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572930590] [2022-11-18 19:39:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:55,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:55,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228735667] [2022-11-18 19:39:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:55,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:55,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:55,530 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:55,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:39:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:58,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 5719 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-18 19:39:58,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:01,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-18 19:40:03,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:03,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572930590] [2022-11-18 19:40:03,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:03,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228735667] [2022-11-18 19:40:03,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228735667] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:03,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:03,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 24 [2022-11-18 19:40:03,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547231793] [2022-11-18 19:40:03,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:03,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:40:03,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:03,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:40:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:40:03,624 INFO L87 Difference]: Start difference. First operand 1830 states and 3038 transitions. Second operand has 11 states, 11 states have (on average 48.90909090909091) internal successors, (538), 11 states have internal predecessors, (538), 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) [2022-11-18 19:40:04,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:04,883 INFO L93 Difference]: Finished difference Result 5151 states and 8547 transitions. [2022-11-18 19:40:04,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:40:04,884 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 48.90909090909091) internal successors, (538), 11 states have internal predecessors, (538), 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 697 [2022-11-18 19:40:04,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:04,888 INFO L225 Difference]: With dead ends: 5151 [2022-11-18 19:40:04,889 INFO L226 Difference]: Without dead ends: 4323 [2022-11-18 19:40:04,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1435 GetRequests, 1391 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=321, Invalid=1749, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 19:40:04,891 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 12737 mSDsluCounter, 14779 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12737 SdHoareTripleChecker+Valid, 16464 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:04,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12737 Valid, 16464 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:40:04,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2022-11-18 19:40:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 1806. [2022-11-18 19:40:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:40:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:40:04,947 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 697 [2022-11-18 19:40:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:04,948 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:40:04,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 48.90909090909091) internal successors, (538), 11 states have internal predecessors, (538), 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) [2022-11-18 19:40:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:40:04,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-11-18 19:40:04,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:04,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:04,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:05,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:05,170 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:05,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash 819950985, now seen corresponding path program 1 times [2022-11-18 19:40:05,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:05,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089440655] [2022-11-18 19:40:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:05,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:05,362 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:05,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518302198] [2022-11-18 19:40:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:05,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:05,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:05,370 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:05,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:40:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:08,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 5722 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-18 19:40:08,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:11,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-18 19:40:14,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:14,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089440655] [2022-11-18 19:40:14,982 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:14,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518302198] [2022-11-18 19:40:14,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518302198] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:14,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:14,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 30 [2022-11-18 19:40:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049222291] [2022-11-18 19:40:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:14,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:40:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:40:14,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:40:14,985 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 15 states, 15 states have (on average 36.06666666666667) internal successors, (541), 15 states have internal predecessors, (541), 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) [2022-11-18 19:40:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:40,818 INFO L93 Difference]: Finished difference Result 6764 states and 11219 transitions. [2022-11-18 19:40:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-18 19:40:40,819 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 36.06666666666667) internal successors, (541), 15 states have internal predecessors, (541), 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 698 [2022-11-18 19:40:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:40,825 INFO L225 Difference]: With dead ends: 6764 [2022-11-18 19:40:40,825 INFO L226 Difference]: Without dead ends: 6762 [2022-11-18 19:40:40,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1530 GetRequests, 1429 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3551 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1702, Invalid=8804, Unknown=0, NotChecked=0, Total=10506 [2022-11-18 19:40:40,831 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 41964 mSDsluCounter, 8420 mSDsCounter, 0 mSdLazyCounter, 15895 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41964 SdHoareTripleChecker+Valid, 9211 SdHoareTripleChecker+Invalid, 15902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:40,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41964 Valid, 9211 Invalid, 15902 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7 Valid, 15895 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2022-11-18 19:40:40,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2022-11-18 19:40:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 1833. [2022-11-18 19:40:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 1.6610262008733625) internal successors, (3043), 1832 states have internal predecessors, (3043), 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) [2022-11-18 19:40:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 3043 transitions. [2022-11-18 19:40:40,895 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 3043 transitions. Word has length 698 [2022-11-18 19:40:40,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:40,896 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 3043 transitions. [2022-11-18 19:40:40,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 36.06666666666667) internal successors, (541), 15 states have internal predecessors, (541), 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) [2022-11-18 19:40:40,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 3043 transitions. [2022-11-18 19:40:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-11-18 19:40:40,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:40,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:40,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:41,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 19:40:41,124 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash 820010567, now seen corresponding path program 1 times [2022-11-18 19:40:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:41,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291105620] [2022-11-18 19:40:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:41,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:41,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348639672] [2022-11-18 19:40:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:41,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:41,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:41,326 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:41,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:40:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:44,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 5722 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-18 19:40:44,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:47,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-18 19:40:49,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:49,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291105620] [2022-11-18 19:40:49,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:49,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348639672] [2022-11-18 19:40:49,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348639672] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:49,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:49,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 25 [2022-11-18 19:40:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618215532] [2022-11-18 19:40:49,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:49,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:40:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:40:49,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:40:49,117 INFO L87 Difference]: Start difference. First operand 1833 states and 3043 transitions. Second operand has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 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) [2022-11-18 19:40:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:50,693 INFO L93 Difference]: Finished difference Result 5181 states and 8597 transitions. [2022-11-18 19:40:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:40:50,697 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 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 698 [2022-11-18 19:40:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:50,702 INFO L225 Difference]: With dead ends: 5181 [2022-11-18 19:40:50,702 INFO L226 Difference]: Without dead ends: 4347 [2022-11-18 19:40:50,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1395 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=387, Invalid=2063, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 19:40:50,705 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 14039 mSDsluCounter, 16461 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14039 SdHoareTripleChecker+Valid, 18144 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:50,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14039 Valid, 18144 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:40:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2022-11-18 19:40:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 1806. [2022-11-18 19:40:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:40:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:40:50,753 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 698 [2022-11-18 19:40:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:50,754 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:40:50,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 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) [2022-11-18 19:40:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:40:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2022-11-18 19:40:50,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:50,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:50,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:50,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:40:50,974 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:50,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:50,975 INFO L85 PathProgramCache]: Analyzing trace with hash 921257565, now seen corresponding path program 1 times [2022-11-18 19:40:50,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:50,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043063690] [2022-11-18 19:40:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:51,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:51,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935999290] [2022-11-18 19:40:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:51,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:51,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:51,173 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:51,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:40:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:54,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 5725 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-18 19:40:54,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:57,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-18 19:41:00,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:00,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043063690] [2022-11-18 19:41:00,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:00,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935999290] [2022-11-18 19:41:00,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935999290] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:00,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:00,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [18] total 32 [2022-11-18 19:41:00,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085145764] [2022-11-18 19:41:00,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:00,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:41:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:41:00,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:41:00,911 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 16 states, 16 states have (on average 34.0) internal successors, (544), 16 states have internal predecessors, (544), 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) [2022-11-18 19:41:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:28,971 INFO L93 Difference]: Finished difference Result 6806 states and 11289 transitions. [2022-11-18 19:41:28,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-18 19:41:28,972 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 34.0) internal successors, (544), 16 states have internal predecessors, (544), 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 699 [2022-11-18 19:41:28,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:28,976 INFO L225 Difference]: With dead ends: 6806 [2022-11-18 19:41:28,976 INFO L226 Difference]: Without dead ends: 6804 [2022-11-18 19:41:28,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 1437 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2032, Invalid=10624, Unknown=0, NotChecked=0, Total=12656 [2022-11-18 19:41:28,979 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 52207 mSDsluCounter, 6791 mSDsCounter, 0 mSdLazyCounter, 15877 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52207 SdHoareTripleChecker+Valid, 7576 SdHoareTripleChecker+Invalid, 15887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 15877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:28,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52207 Valid, 7576 Invalid, 15887 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10 Valid, 15877 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time] [2022-11-18 19:41:28,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6804 states. [2022-11-18 19:41:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6804 to 1836. [2022-11-18 19:41:29,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 1.6610354223433244) internal successors, (3048), 1835 states have internal predecessors, (3048), 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) [2022-11-18 19:41:29,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 3048 transitions. [2022-11-18 19:41:29,038 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 3048 transitions. Word has length 699 [2022-11-18 19:41:29,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:29,039 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 3048 transitions. [2022-11-18 19:41:29,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 34.0) internal successors, (544), 16 states have internal predecessors, (544), 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) [2022-11-18 19:41:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 3048 transitions. [2022-11-18 19:41:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2022-11-18 19:41:29,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:29,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:29,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-18 19:41:29,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:29,262 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash 921317147, now seen corresponding path program 1 times [2022-11-18 19:41:29,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:29,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336728019] [2022-11-18 19:41:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:29,461 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:29,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128289428] [2022-11-18 19:41:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:29,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:29,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:29,472 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:29,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:41:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:32,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 5725 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-18 19:41:32,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:36,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-18 19:41:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:38,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336728019] [2022-11-18 19:41:38,885 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:38,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128289428] [2022-11-18 19:41:38,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128289428] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:38,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:38,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 26 [2022-11-18 19:41:38,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225904513] [2022-11-18 19:41:38,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:38,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:38,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:38,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:38,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:41:38,888 INFO L87 Difference]: Start difference. First operand 1836 states and 3048 transitions. Second operand has 13 states, 13 states have (on average 41.84615384615385) internal successors, (544), 13 states have internal predecessors, (544), 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) [2022-11-18 19:41:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:40,749 INFO L93 Difference]: Finished difference Result 5211 states and 8647 transitions. [2022-11-18 19:41:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:41:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 41.84615384615385) internal successors, (544), 13 states have internal predecessors, (544), 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 699 [2022-11-18 19:41:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:40,754 INFO L225 Difference]: With dead ends: 5211 [2022-11-18 19:41:40,754 INFO L226 Difference]: Without dead ends: 4371 [2022-11-18 19:41:40,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1451 GetRequests, 1399 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=460, Invalid=2402, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 19:41:40,757 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 15346 mSDsluCounter, 18141 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15346 SdHoareTripleChecker+Valid, 19822 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:40,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15346 Valid, 19822 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:41:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2022-11-18 19:41:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 1806. [2022-11-18 19:41:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:41:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:41:40,788 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 699 [2022-11-18 19:41:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:40,789 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:41:40,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.84615384615385) internal successors, (544), 13 states have internal predecessors, (544), 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) [2022-11-18 19:41:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:41:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2022-11-18 19:41:40,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:40,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:40,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:41,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:41:41,017 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:41,018 INFO L85 PathProgramCache]: Analyzing trace with hash 660839405, now seen corresponding path program 1 times [2022-11-18 19:41:41,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:41,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832634169] [2022-11-18 19:41:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:41,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:41,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:41,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378924773] [2022-11-18 19:41:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:41,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:41,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:41,304 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:41,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 19:41:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:44,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 5728 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-18 19:41:44,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:48,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-18 19:41:51,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832634169] [2022-11-18 19:41:51,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378924773] [2022-11-18 19:41:51,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378924773] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:51,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:51,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [19] total 34 [2022-11-18 19:41:51,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661094240] [2022-11-18 19:41:51,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:51,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:41:51,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:51,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:41:51,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:41:51,949 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 17 states, 17 states have (on average 32.1764705882353) internal successors, (547), 17 states have internal predecessors, (547), 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) [2022-11-18 19:42:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:25,170 INFO L93 Difference]: Finished difference Result 6851 states and 11364 transitions. [2022-11-18 19:42:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-18 19:42:25,170 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 32.1764705882353) internal successors, (547), 17 states have internal predecessors, (547), 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 700 [2022-11-18 19:42:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:25,174 INFO L225 Difference]: With dead ends: 6851 [2022-11-18 19:42:25,174 INFO L226 Difference]: Without dead ends: 6849 [2022-11-18 19:42:25,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1562 GetRequests, 1443 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5034 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2327, Invalid=12193, Unknown=0, NotChecked=0, Total=14520 [2022-11-18 19:42:25,177 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 50963 mSDsluCounter, 9252 mSDsCounter, 0 mSdLazyCounter, 18080 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50963 SdHoareTripleChecker+Valid, 10031 SdHoareTripleChecker+Invalid, 18087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:25,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50963 Valid, 10031 Invalid, 18087 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7 Valid, 18080 Invalid, 0 Unknown, 0 Unchecked, 25.0s Time] [2022-11-18 19:42:25,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2022-11-18 19:42:25,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 1839. [2022-11-18 19:42:25,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1838 states have (on average 1.661044613710555) internal successors, (3053), 1838 states have internal predecessors, (3053), 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) [2022-11-18 19:42:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3053 transitions. [2022-11-18 19:42:25,222 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3053 transitions. Word has length 700 [2022-11-18 19:42:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:25,222 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 3053 transitions. [2022-11-18 19:42:25,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 32.1764705882353) internal successors, (547), 17 states have internal predecessors, (547), 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) [2022-11-18 19:42:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3053 transitions. [2022-11-18 19:42:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2022-11-18 19:42:25,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:25,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:25,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:25,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:25,450 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash 660898987, now seen corresponding path program 1 times [2022-11-18 19:42:25,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:25,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250725094] [2022-11-18 19:42:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:25,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:25,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:42:25,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133939441] [2022-11-18 19:42:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:25,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:25,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:25,640 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:25,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 19:42:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:29,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 5728 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-18 19:42:29,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:33,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-18 19:42:36,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:36,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250725094] [2022-11-18 19:42:36,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:42:36,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133939441] [2022-11-18 19:42:36,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133939441] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:36,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:36,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 28 [2022-11-18 19:42:36,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75319531] [2022-11-18 19:42:36,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:36,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:42:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:36,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:42:36,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:42:36,462 INFO L87 Difference]: Start difference. First operand 1839 states and 3053 transitions. Second operand has 14 states, 14 states have (on average 39.07142857142857) internal successors, (547), 14 states have internal predecessors, (547), 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) [2022-11-18 19:42:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:38,833 INFO L93 Difference]: Finished difference Result 5241 states and 8697 transitions. [2022-11-18 19:42:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 19:42:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 39.07142857142857) internal successors, (547), 14 states have internal predecessors, (547), 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 700 [2022-11-18 19:42:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:38,839 INFO L225 Difference]: With dead ends: 5241 [2022-11-18 19:42:38,839 INFO L226 Difference]: Without dead ends: 4395 [2022-11-18 19:42:38,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1459 GetRequests, 1402 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=544, Invalid=2878, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 19:42:38,843 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 16658 mSDsluCounter, 19819 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16658 SdHoareTripleChecker+Valid, 21498 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:38,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16658 Valid, 21498 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:42:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2022-11-18 19:42:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 1806. [2022-11-18 19:42:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:42:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:42:38,882 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 700 [2022-11-18 19:42:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:38,883 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:42:38,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 39.07142857142857) internal successors, (547), 14 states have internal predecessors, (547), 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) [2022-11-18 19:42:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:42:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2022-11-18 19:42:38,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:38,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:38,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:39,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:42:39,091 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:39,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:39,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1525642379, now seen corresponding path program 1 times [2022-11-18 19:42:39,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:39,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943157467] [2022-11-18 19:42:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:39,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:39,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:42:39,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983232541] [2022-11-18 19:42:39,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:39,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:39,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:39,289 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:39,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 19:42:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:42,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 5731 conjuncts, 133 conjunts are in the unsatisfiable core [2022-11-18 19:42:42,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:46,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-18 19:42:49,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:49,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943157467] [2022-11-18 19:42:49,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:42:49,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983232541] [2022-11-18 19:42:49,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983232541] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:49,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:49,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [20] total 36 [2022-11-18 19:42:49,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33459427] [2022-11-18 19:42:49,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:49,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:42:49,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:49,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:42:49,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1153, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:42:49,863 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 18 states, 18 states have (on average 30.555555555555557) internal successors, (550), 18 states have internal predecessors, (550), 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) [2022-11-18 19:43:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:26,091 INFO L93 Difference]: Finished difference Result 6890 states and 11429 transitions. [2022-11-18 19:43:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-18 19:43:26,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 30.555555555555557) internal successors, (550), 18 states have internal predecessors, (550), 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 701 [2022-11-18 19:43:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:26,097 INFO L225 Difference]: With dead ends: 6890 [2022-11-18 19:43:26,097 INFO L226 Difference]: Without dead ends: 6888 [2022-11-18 19:43:26,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1584 GetRequests, 1453 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6098 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2779, Invalid=14777, Unknown=0, NotChecked=0, Total=17556 [2022-11-18 19:43:26,101 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 60015 mSDsluCounter, 7771 mSDsCounter, 0 mSdLazyCounter, 18329 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60015 SdHoareTripleChecker+Valid, 8544 SdHoareTripleChecker+Invalid, 18339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 18329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:26,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60015 Valid, 8544 Invalid, 18339 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10 Valid, 18329 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2022-11-18 19:43:26,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2022-11-18 19:43:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 1842. [2022-11-18 19:43:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.661053775122216) internal successors, (3058), 1841 states have internal predecessors, (3058), 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) [2022-11-18 19:43:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 3058 transitions. [2022-11-18 19:43:26,164 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 3058 transitions. Word has length 701 [2022-11-18 19:43:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:26,165 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 3058 transitions. [2022-11-18 19:43:26,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 30.555555555555557) internal successors, (550), 18 states have internal predecessors, (550), 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) [2022-11-18 19:43:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 3058 transitions. [2022-11-18 19:43:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2022-11-18 19:43:26,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:26,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:26,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:26,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:43:26,390 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:26,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:26,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1525582797, now seen corresponding path program 1 times [2022-11-18 19:43:26,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:26,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301921637] [2022-11-18 19:43:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:26,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:26,596 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:43:26,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660281653] [2022-11-18 19:43:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:26,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:26,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:26,598 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:26,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 19:43:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:30,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 5731 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-18 19:43:30,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:33,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-18 19:43:35,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:35,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301921637] [2022-11-18 19:43:35,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:43:35,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660281653] [2022-11-18 19:43:35,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660281653] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:35,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:43:35,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [20] total 32 [2022-11-18 19:43:35,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711767762] [2022-11-18 19:43:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:35,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:43:35,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:43:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:43:35,854 INFO L87 Difference]: Start difference. First operand 1842 states and 3058 transitions. Second operand has 15 states, 15 states have (on average 36.666666666666664) internal successors, (550), 15 states have internal predecessors, (550), 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) [2022-11-18 19:43:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:38,350 INFO L93 Difference]: Finished difference Result 5271 states and 8747 transitions. [2022-11-18 19:43:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:43:38,350 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 36.666666666666664) internal successors, (550), 15 states have internal predecessors, (550), 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 701 [2022-11-18 19:43:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:38,356 INFO L225 Difference]: With dead ends: 5271 [2022-11-18 19:43:38,356 INFO L226 Difference]: Without dead ends: 4419 [2022-11-18 19:43:38,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1467 GetRequests, 1403 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=643, Invalid=3647, Unknown=0, NotChecked=0, Total=4290 [2022-11-18 19:43:38,360 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 17975 mSDsluCounter, 21495 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17975 SdHoareTripleChecker+Valid, 23172 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:38,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17975 Valid, 23172 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:43:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2022-11-18 19:43:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 1806. [2022-11-18 19:43:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:43:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:43:38,408 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 701 [2022-11-18 19:43:38,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:38,409 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:43:38,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 36.666666666666664) internal successors, (550), 15 states have internal predecessors, (550), 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) [2022-11-18 19:43:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:43:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2022-11-18 19:43:38,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:38,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:38,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:38,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 19:43:38,634 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:38,635 INFO L85 PathProgramCache]: Analyzing trace with hash -970441709, now seen corresponding path program 1 times [2022-11-18 19:43:38,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:38,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377031888] [2022-11-18 19:43:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:38,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:38,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:43:38,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718538836] [2022-11-18 19:43:38,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:38,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:38,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:38,838 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:38,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 19:43:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:42,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 5734 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-18 19:43:42,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:46,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 19:43:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:50,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377031888] [2022-11-18 19:43:50,475 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:43:50,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718538836] [2022-11-18 19:43:50,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718538836] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:50,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:43:50,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [21] total 38 [2022-11-18 19:43:50,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133137350] [2022-11-18 19:43:50,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:50,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:43:50,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:50,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:43:50,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1293, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:43:50,478 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 19 states, 19 states have (on average 29.105263157894736) internal successors, (553), 19 states have internal predecessors, (553), 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) [2022-11-18 19:44:29,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:29,619 INFO L93 Difference]: Finished difference Result 6932 states and 11499 transitions. [2022-11-18 19:44:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-11-18 19:44:29,620 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 29.105263157894736) internal successors, (553), 19 states have internal predecessors, (553), 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 702 [2022-11-18 19:44:29,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:29,626 INFO L225 Difference]: With dead ends: 6932 [2022-11-18 19:44:29,626 INFO L226 Difference]: Without dead ends: 6930 [2022-11-18 19:44:29,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1602 GetRequests, 1461 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7099 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=3196, Invalid=17110, Unknown=0, NotChecked=0, Total=20306 [2022-11-18 19:44:29,630 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 60000 mSDsluCounter, 10222 mSDsCounter, 0 mSdLazyCounter, 20547 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60000 SdHoareTripleChecker+Valid, 10989 SdHoareTripleChecker+Invalid, 20554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:29,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60000 Valid, 10989 Invalid, 20554 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7 Valid, 20547 Invalid, 0 Unknown, 0 Unchecked, 27.8s Time] [2022-11-18 19:44:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6930 states. [2022-11-18 19:44:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6930 to 1845. [2022-11-18 19:44:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1845 states, 1844 states have (on average 1.661062906724512) internal successors, (3063), 1844 states have internal predecessors, (3063), 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) [2022-11-18 19:44:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 3063 transitions. [2022-11-18 19:44:29,673 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 3063 transitions. Word has length 702 [2022-11-18 19:44:29,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:29,674 INFO L495 AbstractCegarLoop]: Abstraction has 1845 states and 3063 transitions. [2022-11-18 19:44:29,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 29.105263157894736) internal successors, (553), 19 states have internal predecessors, (553), 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) [2022-11-18 19:44:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 3063 transitions. [2022-11-18 19:44:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2022-11-18 19:44:29,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:29,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:29,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:29,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:44:29,880 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:29,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:29,880 INFO L85 PathProgramCache]: Analyzing trace with hash -970382127, now seen corresponding path program 1 times [2022-11-18 19:44:29,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:29,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900041045] [2022-11-18 19:44:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:29,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:30,055 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:44:30,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028158735] [2022-11-18 19:44:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:30,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:30,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:30,062 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:44:30,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 19:44:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:33,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 5734 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-18 19:44:33,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:44:38,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 19:44:41,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:41,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900041045] [2022-11-18 19:44:41,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:44:41,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028158735] [2022-11-18 19:44:41,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028158735] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:44:41,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:44:41,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 32 [2022-11-18 19:44:41,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636733877] [2022-11-18 19:44:41,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:41,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:44:41,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:41,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:44:41,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:44:41,819 INFO L87 Difference]: Start difference. First operand 1845 states and 3063 transitions. Second operand has 16 states, 16 states have (on average 34.5625) internal successors, (553), 16 states have internal predecessors, (553), 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) [2022-11-18 19:44:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:45,017 INFO L93 Difference]: Finished difference Result 5301 states and 8797 transitions. [2022-11-18 19:44:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 19:44:45,017 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 34.5625) internal successors, (553), 16 states have internal predecessors, (553), 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 702 [2022-11-18 19:44:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:45,022 INFO L225 Difference]: With dead ends: 5301 [2022-11-18 19:44:45,022 INFO L226 Difference]: Without dead ends: 4443 [2022-11-18 19:44:45,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1475 GetRequests, 1408 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=733, Invalid=3959, Unknown=0, NotChecked=0, Total=4692 [2022-11-18 19:44:45,025 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 19297 mSDsluCounter, 23169 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19297 SdHoareTripleChecker+Valid, 24844 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:45,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19297 Valid, 24844 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:44:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2022-11-18 19:44:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 1806. [2022-11-18 19:44:45,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:44:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:44:45,069 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 702 [2022-11-18 19:44:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:45,069 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:44:45,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 34.5625) internal successors, (553), 16 states have internal predecessors, (553), 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) [2022-11-18 19:44:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:44:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-11-18 19:44:45,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:45,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:45,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:45,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:45,275 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash -725690801, now seen corresponding path program 1 times [2022-11-18 19:44:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:45,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934708679] [2022-11-18 19:44:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:45,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:45,467 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:44:45,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268536950] [2022-11-18 19:44:45,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:45,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:45,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:45,468 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:44:45,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 19:44:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:49,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 5737 conjuncts, 145 conjunts are in the unsatisfiable core [2022-11-18 19:44:49,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:44:53,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-18 19:44:57,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:57,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934708679] [2022-11-18 19:44:57,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:44:57,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268536950] [2022-11-18 19:44:57,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268536950] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:44:57,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:44:57,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [22] total 40 [2022-11-18 19:44:57,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800577227] [2022-11-18 19:44:57,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:57,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:44:57,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:57,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:44:57,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1441, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:44:57,132 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 20 states, 20 states have (on average 27.8) internal successors, (556), 20 states have internal predecessors, (556), 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) [2022-11-18 19:45:39,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:39,877 INFO L93 Difference]: Finished difference Result 6974 states and 11569 transitions. [2022-11-18 19:45:39,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-18 19:45:39,878 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 27.8) internal successors, (556), 20 states have internal predecessors, (556), 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 703 [2022-11-18 19:45:39,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:39,884 INFO L225 Difference]: With dead ends: 6974 [2022-11-18 19:45:39,885 INFO L226 Difference]: Without dead ends: 6972 [2022-11-18 19:45:39,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1620 GetRequests, 1469 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8176 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=3642, Invalid=19614, Unknown=0, NotChecked=0, Total=23256 [2022-11-18 19:45:39,888 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 63914 mSDsluCounter, 10696 mSDsCounter, 0 mSdLazyCounter, 21789 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63914 SdHoareTripleChecker+Valid, 11457 SdHoareTripleChecker+Invalid, 21796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:39,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63914 Valid, 11457 Invalid, 21796 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7 Valid, 21789 Invalid, 0 Unknown, 0 Unchecked, 29.5s Time] [2022-11-18 19:45:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2022-11-18 19:45:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 1848. [2022-11-18 19:45:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 1.6610720086626962) internal successors, (3068), 1847 states have internal predecessors, (3068), 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) [2022-11-18 19:45:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 3068 transitions. [2022-11-18 19:45:39,931 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 3068 transitions. Word has length 703 [2022-11-18 19:45:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:39,932 INFO L495 AbstractCegarLoop]: Abstraction has 1848 states and 3068 transitions. [2022-11-18 19:45:39,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 27.8) internal successors, (556), 20 states have internal predecessors, (556), 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) [2022-11-18 19:45:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 3068 transitions. [2022-11-18 19:45:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-11-18 19:45:39,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:39,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:39,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-18 19:45:40,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-18 19:45:40,139 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash -725631219, now seen corresponding path program 1 times [2022-11-18 19:45:40,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:40,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193143692] [2022-11-18 19:45:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:40,347 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:45:40,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680082616] [2022-11-18 19:45:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:40,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:40,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:40,350 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:45:40,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 19:45:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:44,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 5737 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-18 19:45:44,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:45:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:48,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:45:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-18 19:45:51,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:51,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193143692] [2022-11-18 19:45:51,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:45:51,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680082616] [2022-11-18 19:45:51,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680082616] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:45:51,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:45:51,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [20] total 34 [2022-11-18 19:45:51,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018707176] [2022-11-18 19:45:51,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:51,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:45:51,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:51,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:45:51,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:45:51,559 INFO L87 Difference]: Start difference. First operand 1848 states and 3068 transitions. Second operand has 17 states, 17 states have (on average 32.705882352941174) internal successors, (556), 17 states have internal predecessors, (556), 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) [2022-11-18 19:45:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:55,300 INFO L93 Difference]: Finished difference Result 5331 states and 8847 transitions. [2022-11-18 19:45:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 19:45:55,300 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 32.705882352941174) internal successors, (556), 17 states have internal predecessors, (556), 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 703 [2022-11-18 19:45:55,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:55,305 INFO L225 Difference]: With dead ends: 5331 [2022-11-18 19:45:55,305 INFO L226 Difference]: Without dead ends: 4467 [2022-11-18 19:45:55,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1483 GetRequests, 1411 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=838, Invalid=4564, Unknown=0, NotChecked=0, Total=5402 [2022-11-18 19:45:55,309 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 20624 mSDsluCounter, 24841 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20624 SdHoareTripleChecker+Valid, 26514 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:55,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20624 Valid, 26514 Invalid, 298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:45:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2022-11-18 19:45:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 1806. [2022-11-18 19:45:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1805 states have (on average 1.6609418282548476) internal successors, (2998), 1805 states have internal predecessors, (2998), 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) [2022-11-18 19:45:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2998 transitions. [2022-11-18 19:45:55,362 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2998 transitions. Word has length 703 [2022-11-18 19:45:55,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:55,363 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2998 transitions. [2022-11-18 19:45:55,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 32.705882352941174) internal successors, (556), 17 states have internal predecessors, (556), 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) [2022-11-18 19:45:55,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2998 transitions. [2022-11-18 19:45:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2022-11-18 19:45:55,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:55,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:55,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:45:55,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:55,569 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:55,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1027529079, now seen corresponding path program 1 times [2022-11-18 19:45:55,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:55,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206045442] [2022-11-18 19:45:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:55,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:45:55,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292427614] [2022-11-18 19:45:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:55,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:55,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:55,742 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:45:55,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 19:45:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:59,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 5740 conjuncts, 149 conjunts are in the unsatisfiable core [2022-11-18 19:45:59,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:03,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-18 19:46:07,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:07,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206045442] [2022-11-18 19:46:07,215 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:46:07,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292427614] [2022-11-18 19:46:07,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292427614] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:07,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:46:07,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [23] total 42 [2022-11-18 19:46:07,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107157009] [2022-11-18 19:46:07,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:07,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:46:07,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:07,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:46:07,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1597, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 19:46:07,219 INFO L87 Difference]: Start difference. First operand 1806 states and 2998 transitions. Second operand has 21 states, 21 states have (on average 26.61904761904762) internal successors, (559), 21 states have internal predecessors, (559), 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) [2022-11-18 19:46:52,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:52,023 INFO L93 Difference]: Finished difference Result 7019 states and 11644 transitions. [2022-11-18 19:46:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-11-18 19:46:52,023 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 26.61904761904762) internal successors, (559), 21 states have internal predecessors, (559), 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 704 [2022-11-18 19:46:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:52,028 INFO L225 Difference]: With dead ends: 7019 [2022-11-18 19:46:52,028 INFO L226 Difference]: Without dead ends: 7017 [2022-11-18 19:46:52,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1634 GetRequests, 1475 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9150 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=4037, Invalid=21723, Unknown=0, NotChecked=0, Total=25760 [2022-11-18 19:46:52,031 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 70563 mSDsluCounter, 9202 mSDsCounter, 0 mSdLazyCounter, 22041 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70563 SdHoareTripleChecker+Valid, 9957 SdHoareTripleChecker+Invalid, 22051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:52,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70563 Valid, 9957 Invalid, 22051 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10 Valid, 22041 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time] [2022-11-18 19:46:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7017 states. [2022-11-18 19:46:52,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7017 to 1851. [2022-11-18 19:46:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1850 states have (on average 1.661081081081081) internal successors, (3073), 1850 states have internal predecessors, (3073), 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) [2022-11-18 19:46:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 3073 transitions. [2022-11-18 19:46:52,075 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 3073 transitions. Word has length 704 [2022-11-18 19:46:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:52,076 INFO L495 AbstractCegarLoop]: Abstraction has 1851 states and 3073 transitions. [2022-11-18 19:46:52,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 26.61904761904762) internal successors, (559), 21 states have internal predecessors, (559), 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) [2022-11-18 19:46:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 3073 transitions. [2022-11-18 19:46:52,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2022-11-18 19:46:52,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:52,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:52,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:52,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:52,286 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1027588661, now seen corresponding path program 1 times [2022-11-18 19:46:52,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:52,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208508789] [2022-11-18 19:46:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:52,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:52,469 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:46:52,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888404947] [2022-11-18 19:46:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:52,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:52,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:52,471 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:52,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 19:46:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:56,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 5740 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-18 19:46:56,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:02,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-18 19:47:05,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:05,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208508789] [2022-11-18 19:47:05,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:47:05,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888404947] [2022-11-18 19:47:05,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888404947] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:05,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:47:05,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [22] total 39 [2022-11-18 19:47:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132409684] [2022-11-18 19:47:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:05,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:47:05,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:47:05,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:47:05,831 INFO L87 Difference]: Start difference. First operand 1851 states and 3073 transitions. Second operand has 19 states, 19 states have (on average 29.42105263157895) internal successors, (559), 19 states have internal predecessors, (559), 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) [2022-11-18 19:47:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:34,986 INFO L93 Difference]: Finished difference Result 7179 states and 11912 transitions. [2022-11-18 19:47:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-18 19:47:34,986 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 29.42105263157895) internal successors, (559), 19 states have internal predecessors, (559), 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 704 [2022-11-18 19:47:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:34,992 INFO L225 Difference]: With dead ends: 7179 [2022-11-18 19:47:34,992 INFO L226 Difference]: Without dead ends: 6309 [2022-11-18 19:47:34,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 1439 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3638 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1872, Invalid=10338, Unknown=0, NotChecked=0, Total=12210 [2022-11-18 19:47:34,995 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 24637 mSDsluCounter, 19223 mSDsCounter, 0 mSdLazyCounter, 29936 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24637 SdHoareTripleChecker+Valid, 20423 SdHoareTripleChecker+Invalid, 29940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:34,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24637 Valid, 20423 Invalid, 29940 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 29936 Invalid, 0 Unknown, 0 Unchecked, 24.4s Time] [2022-11-18 19:47:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2022-11-18 19:47:35,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 1836. [2022-11-18 19:47:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 1.6610354223433244) internal successors, (3048), 1835 states have internal predecessors, (3048), 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) [2022-11-18 19:47:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 3048 transitions. [2022-11-18 19:47:35,034 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 3048 transitions. Word has length 704 [2022-11-18 19:47:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:35,034 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 3048 transitions. [2022-11-18 19:47:35,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 29.42105263157895) internal successors, (559), 19 states have internal predecessors, (559), 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) [2022-11-18 19:47:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 3048 transitions. [2022-11-18 19:47:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2022-11-18 19:47:35,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:35,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:35,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:35,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 19:47:35,241 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1923082855, now seen corresponding path program 1 times [2022-11-18 19:47:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:35,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377561339] [2022-11-18 19:47:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:35,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:35,474 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:47:35,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281975550] [2022-11-18 19:47:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:35,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:35,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:35,478 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:35,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97cf4920-f7f4-4798-996a-60c045f2eddd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 19:47:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:39,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 5743 conjuncts, 157 conjunts are in the unsatisfiable core [2022-11-18 19:47:39,322 INFO L286 TraceCheckSpWp]: Computing forward predicates...