./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8 --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 3890b7cfe54f4f6f014e270a31c34801e87723910e4bab7fdc4042890d7cac67 --- 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-e04fb08 [2022-11-16 11:46:43,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:46:43,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:46:43,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:46:43,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:46:43,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:46:43,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:46:43,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:46:43,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:46:43,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:46:43,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:46:43,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:46:43,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:46:43,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:46:43,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:46:43,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:46:43,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:46:43,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:46:43,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:46:43,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:46:43,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:46:43,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:46:43,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:46:43,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:46:43,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:46:43,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:46:43,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:46:43,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:46:43,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:46:43,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:46:43,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:46:43,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:46:43,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:46:43,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:46:43,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:46:43,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:46:43,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:46:43,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:46:43,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:46:43,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:46:43,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:46:43,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:46:43,558 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:46:43,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:46:43,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:46:43,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:46:43,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:46:43,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:46:43,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:46:43,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:46:43,561 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:46:43,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:46:43,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:46:43,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:46:43,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:46:43,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:46:43,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:46:43,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:46:43,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:46:43,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:46:43,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:46:43,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:46:43,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:46:43,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:46:43,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:46:43,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:46:43,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:46:43,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:46:43,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:46:43,572 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:46:43,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:46:43,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:46:43,573 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_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3890b7cfe54f4f6f014e270a31c34801e87723910e4bab7fdc4042890d7cac67 [2022-11-16 11:46:43,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:46:43,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:46:43,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:46:43,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:46:43,999 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:46:44,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c [2022-11-16 11:46:44,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/data/f1bd23162/64e0cf0cfbae44bbbfa8cc4138650f0f/FLAG93ece4e5a [2022-11-16 11:46:44,742 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:46:44,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c [2022-11-16 11:46:44,762 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/data/f1bd23162/64e0cf0cfbae44bbbfa8cc4138650f0f/FLAG93ece4e5a [2022-11-16 11:46:44,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/data/f1bd23162/64e0cf0cfbae44bbbfa8cc4138650f0f [2022-11-16 11:46:44,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:46:44,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:46:44,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:46:44,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:46:45,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:46:45,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:46:44" (1/1) ... [2022-11-16 11:46:45,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273276da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45, skipping insertion in model container [2022-11-16 11:46:45,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:46:44" (1/1) ... [2022-11-16 11:46:45,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:46:45,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:46:45,351 WARN L229 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_02a87545-3699-42c3-8917-e5b938c56d94/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c[1014,1027] [2022-11-16 11:46:45,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:46:45,693 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:46:45,704 WARN L229 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_02a87545-3699-42c3-8917-e5b938c56d94/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c[1014,1027] [2022-11-16 11:46:45,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:46:45,826 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:46:45,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45 WrapperNode [2022-11-16 11:46:45,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:46:45,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:46:45,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:46:45,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:46:45,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:45,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,044 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2614 [2022-11-16 11:46:46,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:46:46,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:46:46,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:46:46,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:46:46,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,236 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:46:46,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:46:46,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:46:46,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:46:46,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (1/1) ... [2022-11-16 11:46:46,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:46:46,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:46,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:46:46,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:46:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:46:46,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:46:46,850 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:46:46,853 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:46:49,698 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:46:49,710 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:46:49,710 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:46:49,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:46:49 BoogieIcfgContainer [2022-11-16 11:46:49,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:46:49,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:46:49,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:46:49,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:46:49,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:46:44" (1/3) ... [2022-11-16 11:46:49,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2337f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:46:49, skipping insertion in model container [2022-11-16 11:46:49,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:45" (2/3) ... [2022-11-16 11:46:49,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2337f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:46:49, skipping insertion in model container [2022-11-16 11:46:49,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:46:49" (3/3) ... [2022-11-16 11:46:49,722 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.2.prop1-back-serstep.c [2022-11-16 11:46:49,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:46:49,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:46:49,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:46:49,807 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;@4748e7c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:46:49,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:46:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 446 states, 444 states have (on average 1.662162162162162) internal successors, (738), 445 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:49,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:46:49,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:49,825 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] [2022-11-16 11:46:49,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:49,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash 53786133, now seen corresponding path program 1 times [2022-11-16 11:46:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:49,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071903106] [2022-11-16 11:46:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:49,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:50,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071903106] [2022-11-16 11:46:50,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071903106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:50,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:50,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:46:50,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269153431] [2022-11-16 11:46:50,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:50,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:46:50,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:46:51,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:46:51,006 INFO L87 Difference]: Start difference. First operand has 446 states, 444 states have (on average 1.662162162162162) internal successors, (738), 445 states have internal predecessors, (738), 0 states have call successors, (0), 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 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:51,496 INFO L93 Difference]: Finished difference Result 1456 states and 2422 transitions. [2022-11-16 11:46:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:46:51,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:46:51,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:51,523 INFO L225 Difference]: With dead ends: 1456 [2022-11-16 11:46:51,523 INFO L226 Difference]: Without dead ends: 1012 [2022-11-16 11:46:51,532 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 [2022-11-16 11:46:51,536 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 2172 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:51,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 2113 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:46:51,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-11-16 11:46:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 444. [2022-11-16 11:46:51,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.6568848758465011) internal successors, (734), 443 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 734 transitions. [2022-11-16 11:46:51,632 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 734 transitions. Word has length 93 [2022-11-16 11:46:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:51,633 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 734 transitions. [2022-11-16 11:46:51,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 734 transitions. [2022-11-16 11:46:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 11:46:51,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:51,648 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] [2022-11-16 11:46:51,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:46:51,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:51,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1669095599, now seen corresponding path program 1 times [2022-11-16 11:46:51,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:51,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630696884] [2022-11-16 11:46:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:51,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:52,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:52,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630696884] [2022-11-16 11:46:52,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630696884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:52,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:52,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:46:52,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405305201] [2022-11-16 11:46:52,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:52,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:46:52,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:46:52,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:46:52,364 INFO L87 Difference]: Start difference. First operand 444 states and 734 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:52,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:52,979 INFO L93 Difference]: Finished difference Result 1757 states and 2914 transitions. [2022-11-16 11:46:52,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:46:52,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-11-16 11:46:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:52,988 INFO L225 Difference]: With dead ends: 1757 [2022-11-16 11:46:52,989 INFO L226 Difference]: Without dead ends: 1315 [2022-11-16 11:46:52,991 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 [2022-11-16 11:46:52,992 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 1869 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:52,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 2396 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:46:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-11-16 11:46:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 575. [2022-11-16 11:46:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.656794425087108) internal successors, (951), 574 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 951 transitions. [2022-11-16 11:46:53,013 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 951 transitions. Word has length 94 [2022-11-16 11:46:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:53,013 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 951 transitions. [2022-11-16 11:46:53,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:53,014 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 951 transitions. [2022-11-16 11:46:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-11-16 11:46:53,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:53,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:53,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:46:53,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:53,021 INFO L85 PathProgramCache]: Analyzing trace with hash 977268046, now seen corresponding path program 1 times [2022-11-16 11:46:53,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:53,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375413897] [2022-11-16 11:46:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:53,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:53,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:46:53,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775851415] [2022-11-16 11:46:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:53,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:53,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:53,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:53,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:46:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 3301 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 11:46:54,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:57,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-16 11:46:59,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:59,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375413897] [2022-11-16 11:46:59,864 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:46:59,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775851415] [2022-11-16 11:46:59,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775851415] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:59,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:46:59,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-16 11:46:59,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173725693] [2022-11-16 11:46:59,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:59,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:46:59,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:59,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:46:59,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:46:59,869 INFO L87 Difference]: Start difference. First operand 575 states and 951 transitions. Second operand has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:03,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:03,679 INFO L93 Difference]: Finished difference Result 1889 states and 3127 transitions. [2022-11-16 11:47:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:47:03,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 0 states have call successors, (0), 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 387 [2022-11-16 11:47:03,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:03,688 INFO L225 Difference]: With dead ends: 1889 [2022-11-16 11:47:03,688 INFO L226 Difference]: Without dead ends: 1887 [2022-11-16 11:47:03,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:47:03,691 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 5775 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5775 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:03,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5775 Valid, 1855 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 11:47:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2022-11-16 11:47:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 578. [2022-11-16 11:47:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 1.65684575389948) internal successors, (956), 577 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 956 transitions. [2022-11-16 11:47:03,718 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 956 transitions. Word has length 387 [2022-11-16 11:47:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:03,720 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 956 transitions. [2022-11-16 11:47:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 956 transitions. [2022-11-16 11:47:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-11-16 11:47:03,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:03,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:03,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:03,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 11:47:03,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 977327628, now seen corresponding path program 1 times [2022-11-16 11:47:03,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:03,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810811408] [2022-11-16 11:47:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:04,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:04,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82705512] [2022-11-16 11:47:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:04,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:04,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:04,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:04,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:47:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:05,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 3301 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-16 11:47:05,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:07,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-16 11:47:08,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:08,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810811408] [2022-11-16 11:47:08,593 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:47:08,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82705512] [2022-11-16 11:47:08,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82705512] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:08,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:08,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-11-16 11:47:08,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208338991] [2022-11-16 11:47:08,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:08,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:47:08,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:08,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:47:08,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:47:08,603 INFO L87 Difference]: Start difference. First operand 578 states and 956 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:08,997 INFO L93 Difference]: Finished difference Result 1892 states and 3135 transitions. [2022-11-16 11:47:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:47:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 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 387 [2022-11-16 11:47:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:09,003 INFO L225 Difference]: With dead ends: 1892 [2022-11-16 11:47:09,004 INFO L226 Difference]: Without dead ends: 1447 [2022-11-16 11:47:09,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:47:09,006 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 2162 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:09,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 2603 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:47:09,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2022-11-16 11:47:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 575. [2022-11-16 11:47:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.656794425087108) internal successors, (951), 574 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 951 transitions. [2022-11-16 11:47:09,024 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 951 transitions. Word has length 387 [2022-11-16 11:47:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:09,025 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 951 transitions. [2022-11-16 11:47:09,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 951 transitions. [2022-11-16 11:47:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-16 11:47:09,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:09,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:09,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:09,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:09,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:09,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash 20106416, now seen corresponding path program 1 times [2022-11-16 11:47:09,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:09,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913786029] [2022-11-16 11:47:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:09,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:09,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:09,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100512984] [2022-11-16 11:47:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:09,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:09,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:09,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:47:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:10,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-16 11:47:10,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:13,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 11:47:15,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:15,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913786029] [2022-11-16 11:47:15,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:47:15,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100512984] [2022-11-16 11:47:15,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100512984] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:15,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:15,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-16 11:47:15,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595852929] [2022-11-16 11:47:15,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:15,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:47:15,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:47:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:47:15,572 INFO L87 Difference]: Start difference. First operand 575 states and 951 transitions. Second operand has 8 states, 8 states have (on average 38.125) internal successors, (305), 8 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:20,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:20,366 INFO L93 Difference]: Finished difference Result 2343 states and 3873 transitions. [2022-11-16 11:47:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:47:20,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 38.125) internal successors, (305), 8 states have internal predecessors, (305), 0 states have call successors, (0), 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 388 [2022-11-16 11:47:20,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:20,375 INFO L225 Difference]: With dead ends: 2343 [2022-11-16 11:47:20,375 INFO L226 Difference]: Without dead ends: 2341 [2022-11-16 11:47:20,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:47:20,378 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 11565 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 2950 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11565 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:20,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11565 Valid, 2018 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2950 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-16 11:47:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2022-11-16 11:47:20,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 581. [2022-11-16 11:47:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.6568965517241379) internal successors, (961), 580 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 961 transitions. [2022-11-16 11:47:20,404 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 961 transitions. Word has length 388 [2022-11-16 11:47:20,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:20,405 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 961 transitions. [2022-11-16 11:47:20,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.125) internal successors, (305), 8 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:20,406 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 961 transitions. [2022-11-16 11:47:20,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-16 11:47:20,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:20,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:20,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:20,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:20,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash 20165998, now seen corresponding path program 1 times [2022-11-16 11:47:20,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:20,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575030385] [2022-11-16 11:47:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:20,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:20,757 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:20,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595802081] [2022-11-16 11:47:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:20,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:20,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:20,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:20,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:47:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-16 11:47:22,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:23,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 11:47:24,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:24,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575030385] [2022-11-16 11:47:24,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:47:24,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595802081] [2022-11-16 11:47:24,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595802081] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:24,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:24,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2022-11-16 11:47:24,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949467830] [2022-11-16 11:47:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:24,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:47:24,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:24,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:47:24,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:47:24,303 INFO L87 Difference]: Start difference. First operand 581 states and 961 transitions. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:24,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:24,741 INFO L93 Difference]: Finished difference Result 1909 states and 3160 transitions. [2022-11-16 11:47:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:47:24,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 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 388 [2022-11-16 11:47:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:24,749 INFO L225 Difference]: With dead ends: 1909 [2022-11-16 11:47:24,750 INFO L226 Difference]: Without dead ends: 1459 [2022-11-16 11:47:24,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:47:24,752 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 2890 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:24,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 3542 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:47:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-11-16 11:47:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 575. [2022-11-16 11:47:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.656794425087108) internal successors, (951), 574 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 951 transitions. [2022-11-16 11:47:24,770 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 951 transitions. Word has length 388 [2022-11-16 11:47:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:24,771 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 951 transitions. [2022-11-16 11:47:24,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 951 transitions. [2022-11-16 11:47:24,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-11-16 11:47:24,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:24,780 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:24,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:24,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:47:24,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1830179186, now seen corresponding path program 1 times [2022-11-16 11:47:24,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:24,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592430356] [2022-11-16 11:47:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:24,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:25,107 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:25,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475951025] [2022-11-16 11:47:25,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:25,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:25,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:25,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:25,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:47:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:26,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 3307 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-16 11:47:26,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:28,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:47:30,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:30,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592430356] [2022-11-16 11:47:30,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:47:30,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475951025] [2022-11-16 11:47:30,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475951025] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:30,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:30,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-11-16 11:47:30,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532336893] [2022-11-16 11:47:30,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:30,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:47:30,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:47:30,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:47:30,318 INFO L87 Difference]: Start difference. First operand 575 states and 951 transitions. Second operand has 9 states, 9 states have (on average 34.22222222222222) internal successors, (308), 9 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:36,189 INFO L93 Difference]: Finished difference Result 2382 states and 3932 transitions. [2022-11-16 11:47:36,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:47:36,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.22222222222222) internal successors, (308), 9 states have internal predecessors, (308), 0 states have call successors, (0), 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 389 [2022-11-16 11:47:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:36,204 INFO L225 Difference]: With dead ends: 2382 [2022-11-16 11:47:36,205 INFO L226 Difference]: Without dead ends: 2380 [2022-11-16 11:47:36,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 11:47:36,208 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 10887 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 4062 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10887 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 4070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:36,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10887 Valid, 2800 Invalid, 4070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 4062 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 11:47:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-11-16 11:47:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 584. [2022-11-16 11:47:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.6569468267581475) internal successors, (966), 583 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 966 transitions. [2022-11-16 11:47:36,242 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 966 transitions. Word has length 389 [2022-11-16 11:47:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:36,243 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 966 transitions. [2022-11-16 11:47:36,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.22222222222222) internal successors, (308), 9 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 966 transitions. [2022-11-16 11:47:36,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-11-16 11:47:36,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:36,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:36,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:36,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:36,468 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:36,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:36,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1830238768, now seen corresponding path program 1 times [2022-11-16 11:47:36,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:36,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313460314] [2022-11-16 11:47:36,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:36,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:36,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:36,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12957773] [2022-11-16 11:47:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:36,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:36,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:36,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:36,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:47:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:38,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 3307 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 11:47:38,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:39,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:47:40,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:40,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313460314] [2022-11-16 11:47:40,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:47:40,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12957773] [2022-11-16 11:47:40,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12957773] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:40,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:40,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2022-11-16 11:47:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538142672] [2022-11-16 11:47:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:40,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:47:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:47:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:47:40,771 INFO L87 Difference]: Start difference. First operand 584 states and 966 transitions. Second operand has 6 states, 6 states have (on average 51.333333333333336) internal successors, (308), 6 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:41,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:41,133 INFO L93 Difference]: Finished difference Result 1935 states and 3202 transitions. [2022-11-16 11:47:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:47:41,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.333333333333336) internal successors, (308), 6 states have internal predecessors, (308), 0 states have call successors, (0), 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 389 [2022-11-16 11:47:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:41,140 INFO L225 Difference]: With dead ends: 1935 [2022-11-16 11:47:41,140 INFO L226 Difference]: Without dead ends: 1479 [2022-11-16 11:47:41,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:47:41,143 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 3627 mSDsluCounter, 3539 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3627 SdHoareTripleChecker+Valid, 4479 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:41,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3627 Valid, 4479 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:47:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-11-16 11:47:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 575. [2022-11-16 11:47:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.656794425087108) internal successors, (951), 574 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 951 transitions. [2022-11-16 11:47:41,178 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 951 transitions. Word has length 389 [2022-11-16 11:47:41,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:41,179 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 951 transitions. [2022-11-16 11:47:41,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.333333333333336) internal successors, (308), 6 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 951 transitions. [2022-11-16 11:47:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-16 11:47:41,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:41,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:41,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:41,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:41,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1318699016, now seen corresponding path program 1 times [2022-11-16 11:47:41,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:41,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398953092] [2022-11-16 11:47:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:41,515 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:41,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197163824] [2022-11-16 11:47:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:41,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:41,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:41,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:41,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:47:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:42,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 3310 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-16 11:47:42,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:45,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-16 11:47:47,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:47,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398953092] [2022-11-16 11:47:47,065 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:47:47,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197163824] [2022-11-16 11:47:47,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197163824] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:47,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:47,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2022-11-16 11:47:47,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938691268] [2022-11-16 11:47:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:47,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:47:47,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:47:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:47:47,069 INFO L87 Difference]: Start difference. First operand 575 states and 951 transitions. Second operand has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:54,298 INFO L93 Difference]: Finished difference Result 2424 states and 4002 transitions. [2022-11-16 11:47:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:47:54,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 0 states have call successors, (0), 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 390 [2022-11-16 11:47:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:54,308 INFO L225 Difference]: With dead ends: 2424 [2022-11-16 11:47:54,308 INFO L226 Difference]: Without dead ends: 2422 [2022-11-16 11:47:54,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=487, Invalid=2269, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 11:47:54,311 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 13823 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 4706 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13823 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 4714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:54,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13823 Valid, 3106 Invalid, 4714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 4706 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-16 11:47:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2022-11-16 11:47:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 587. [2022-11-16 11:47:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 1.6569965870307166) internal successors, (971), 586 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 971 transitions. [2022-11-16 11:47:54,342 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 971 transitions. Word has length 390 [2022-11-16 11:47:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:54,343 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 971 transitions. [2022-11-16 11:47:54,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 971 transitions. [2022-11-16 11:47:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-16 11:47:54,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:54,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:54,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:54,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:54,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:54,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:54,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1318758598, now seen corresponding path program 1 times [2022-11-16 11:47:54,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:54,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356578858] [2022-11-16 11:47:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:54,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:54,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:54,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318041800] [2022-11-16 11:47:54,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:54,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:54,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:54,699 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:54,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:47:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:56,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 3310 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 11:47:56,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:58,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-16 11:47:59,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:59,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356578858] [2022-11-16 11:47:59,424 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:47:59,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318041800] [2022-11-16 11:47:59,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318041800] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:59,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:59,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-11-16 11:47:59,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014389375] [2022-11-16 11:47:59,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:59,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:47:59,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:47:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:47:59,428 INFO L87 Difference]: Start difference. First operand 587 states and 971 transitions. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:04,918 INFO L93 Difference]: Finished difference Result 2876 states and 4760 transitions. [2022-11-16 11:48:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:48:04,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 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 390 [2022-11-16 11:48:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:04,927 INFO L225 Difference]: With dead ends: 2876 [2022-11-16 11:48:04,927 INFO L226 Difference]: Without dead ends: 2414 [2022-11-16 11:48:04,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 11:48:04,930 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 5848 mSDsluCounter, 3551 mSDsCounter, 0 mSdLazyCounter, 5751 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5848 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 5755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:04,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5848 Valid, 4286 Invalid, 5755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5751 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 11:48:04,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2022-11-16 11:48:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 587. [2022-11-16 11:48:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 1.6552901023890785) internal successors, (970), 586 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 970 transitions. [2022-11-16 11:48:04,955 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 970 transitions. Word has length 390 [2022-11-16 11:48:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:04,956 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 970 transitions. [2022-11-16 11:48:04,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:04,957 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 970 transitions. [2022-11-16 11:48:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-16 11:48:04,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:04,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:04,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:05,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:48:05,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:05,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:05,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1913494184, now seen corresponding path program 1 times [2022-11-16 11:48:05,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:05,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089856781] [2022-11-16 11:48:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:05,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:05,295 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:48:05,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166884564] [2022-11-16 11:48:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:05,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:05,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:05,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:05,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:48:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:06,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 3313 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-16 11:48:06,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:09,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 11:48:10,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:10,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089856781] [2022-11-16 11:48:10,706 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:48:10,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166884564] [2022-11-16 11:48:10,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166884564] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:10,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:10,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2022-11-16 11:48:10,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892527178] [2022-11-16 11:48:10,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:10,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:48:10,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:10,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:48:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:48:10,745 INFO L87 Difference]: Start difference. First operand 587 states and 970 transitions. Second operand has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:18,317 INFO L93 Difference]: Finished difference Result 2523 states and 4161 transitions. [2022-11-16 11:48:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 11:48:18,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 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 391 [2022-11-16 11:48:18,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:18,327 INFO L225 Difference]: With dead ends: 2523 [2022-11-16 11:48:18,327 INFO L226 Difference]: Without dead ends: 2521 [2022-11-16 11:48:18,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=672, Invalid=3234, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 11:48:18,331 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 18275 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 4864 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18275 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 4878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:18,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18275 Valid, 2954 Invalid, 4878 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 4864 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 11:48:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2022-11-16 11:48:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 602. [2022-11-16 11:48:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.6555740432612314) internal successors, (995), 601 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 995 transitions. [2022-11-16 11:48:18,359 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 995 transitions. Word has length 391 [2022-11-16 11:48:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:18,360 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 995 transitions. [2022-11-16 11:48:18,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:18,360 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 995 transitions. [2022-11-16 11:48:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-16 11:48:18,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:18,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:18,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 11:48:18,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:48:18,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:18,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1913434602, now seen corresponding path program 1 times [2022-11-16 11:48:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:18,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126502543] [2022-11-16 11:48:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:18,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:18,698 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:48:18,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159138699] [2022-11-16 11:48:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:18,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:18,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:18,700 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:18,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:48:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:20,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 3313 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-16 11:48:20,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:21,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 11:48:23,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:23,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126502543] [2022-11-16 11:48:23,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:48:23,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159138699] [2022-11-16 11:48:23,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159138699] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:23,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:23,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 20 [2022-11-16 11:48:23,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166136026] [2022-11-16 11:48:23,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:23,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:48:23,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:23,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:48:23,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:48:23,058 INFO L87 Difference]: Start difference. First operand 602 states and 995 transitions. Second operand has 8 states, 8 states have (on average 39.25) internal successors, (314), 8 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:23,760 INFO L93 Difference]: Finished difference Result 2051 states and 3389 transitions. [2022-11-16 11:48:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:48:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 39.25) internal successors, (314), 8 states have internal predecessors, (314), 0 states have call successors, (0), 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 391 [2022-11-16 11:48:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:23,769 INFO L225 Difference]: With dead ends: 2051 [2022-11-16 11:48:23,769 INFO L226 Difference]: Without dead ends: 1574 [2022-11-16 11:48:23,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=889, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:48:23,771 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 5116 mSDsluCounter, 5411 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5116 SdHoareTripleChecker+Valid, 6347 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:23,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5116 Valid, 6347 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:48:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-11-16 11:48:23,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 587. [2022-11-16 11:48:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 1.6552901023890785) internal successors, (970), 586 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:23,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 970 transitions. [2022-11-16 11:48:23,792 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 970 transitions. Word has length 391 [2022-11-16 11:48:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:23,792 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 970 transitions. [2022-11-16 11:48:23,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.25) internal successors, (314), 8 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 970 transitions. [2022-11-16 11:48:23,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-16 11:48:23,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:23,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:23,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:24,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:48:24,011 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1746784034, now seen corresponding path program 1 times [2022-11-16 11:48:24,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:24,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054140605] [2022-11-16 11:48:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:24,121 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:48:24,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642767628] [2022-11-16 11:48:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:24,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:24,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:24,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:24,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:48:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:25,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 3316 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-16 11:48:25,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:27,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 11:48:30,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:30,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054140605] [2022-11-16 11:48:30,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:48:30,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642767628] [2022-11-16 11:48:30,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642767628] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:30,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:30,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2022-11-16 11:48:30,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196714830] [2022-11-16 11:48:30,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:30,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:48:30,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:30,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:48:30,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:48:30,262 INFO L87 Difference]: Start difference. First operand 587 states and 970 transitions. Second operand has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 12 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:39,415 INFO L93 Difference]: Finished difference Result 2588 states and 4268 transitions. [2022-11-16 11:48:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-16 11:48:39,416 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 12 states have internal predecessors, (317), 0 states have call successors, (0), 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 392 [2022-11-16 11:48:39,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:39,423 INFO L225 Difference]: With dead ends: 2588 [2022-11-16 11:48:39,424 INFO L226 Difference]: Without dead ends: 2586 [2022-11-16 11:48:39,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=886, Invalid=4370, Unknown=0, NotChecked=0, Total=5256 [2022-11-16 11:48:39,426 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 20525 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 5506 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20525 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 5517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:39,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20525 Valid, 3262 Invalid, 5517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 5506 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-16 11:48:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2022-11-16 11:48:39,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 605. [2022-11-16 11:48:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.6556291390728477) internal successors, (1000), 604 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1000 transitions. [2022-11-16 11:48:39,450 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 1000 transitions. Word has length 392 [2022-11-16 11:48:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:39,450 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 1000 transitions. [2022-11-16 11:48:39,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.416666666666668) internal successors, (317), 12 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 1000 transitions. [2022-11-16 11:48:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-16 11:48:39,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:39,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:39,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 11:48:39,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:39,674 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:39,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1746843616, now seen corresponding path program 1 times [2022-11-16 11:48:39,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:39,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087975790] [2022-11-16 11:48:39,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:39,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:39,776 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:48:39,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827347943] [2022-11-16 11:48:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:39,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:39,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:39,778 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:39,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:48:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:41,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 3316 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 11:48:41,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:43,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 11:48:45,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:45,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087975790] [2022-11-16 11:48:45,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:48:45,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827347943] [2022-11-16 11:48:45,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827347943] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:45,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:45,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2022-11-16 11:48:45,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776173652] [2022-11-16 11:48:45,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:45,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:48:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:45,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:48:45,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:48:45,189 INFO L87 Difference]: Start difference. First operand 605 states and 1000 transitions. Second operand has 10 states, 10 states have (on average 31.7) internal successors, (317), 10 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:51,837 INFO L93 Difference]: Finished difference Result 3078 states and 5087 transitions. [2022-11-16 11:48:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:48:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.7) internal successors, (317), 10 states have internal predecessors, (317), 0 states have call successors, (0), 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 392 [2022-11-16 11:48:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:51,843 INFO L225 Difference]: With dead ends: 3078 [2022-11-16 11:48:51,844 INFO L226 Difference]: Without dead ends: 2592 [2022-11-16 11:48:51,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=393, Invalid=2157, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 11:48:51,846 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 7373 mSDsluCounter, 4941 mSDsCounter, 0 mSdLazyCounter, 7490 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7373 SdHoareTripleChecker+Valid, 5670 SdHoareTripleChecker+Invalid, 7496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:51,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7373 Valid, 5670 Invalid, 7496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7490 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 11:48:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2022-11-16 11:48:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 593. [2022-11-16 11:48:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 1.6554054054054055) internal successors, (980), 592 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 980 transitions. [2022-11-16 11:48:51,872 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 980 transitions. Word has length 392 [2022-11-16 11:48:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:51,873 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 980 transitions. [2022-11-16 11:48:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.7) internal successors, (317), 10 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 980 transitions. [2022-11-16 11:48:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-16 11:48:51,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:51,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:51,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:52,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:52,098 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1785634692, now seen corresponding path program 1 times [2022-11-16 11:48:52,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:52,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288247121] [2022-11-16 11:48:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:52,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:52,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:48:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694980988] [2022-11-16 11:48:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:52,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:52,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:52,206 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:52,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:48:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 3319 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-16 11:48:53,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:55,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-16 11:48:58,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:58,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288247121] [2022-11-16 11:48:58,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:48:58,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694980988] [2022-11-16 11:48:58,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694980988] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:58,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:58,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2022-11-16 11:48:58,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472330510] [2022-11-16 11:48:58,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:58,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:48:58,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:58,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:48:58,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:48:58,224 INFO L87 Difference]: Start difference. First operand 593 states and 980 transitions. Second operand has 13 states, 13 states have (on average 24.615384615384617) internal successors, (320), 13 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:08,891 INFO L93 Difference]: Finished difference Result 2656 states and 4380 transitions. [2022-11-16 11:49:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-16 11:49:08,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 24.615384615384617) internal successors, (320), 13 states have internal predecessors, (320), 0 states have call successors, (0), 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 393 [2022-11-16 11:49:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:08,903 INFO L225 Difference]: With dead ends: 2656 [2022-11-16 11:49:08,903 INFO L226 Difference]: Without dead ends: 2654 [2022-11-16 11:49:08,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1081, Invalid=5399, Unknown=0, NotChecked=0, Total=6480 [2022-11-16 11:49:08,910 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 22746 mSDsluCounter, 3304 mSDsCounter, 0 mSdLazyCounter, 6485 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22746 SdHoareTripleChecker+Valid, 3748 SdHoareTripleChecker+Invalid, 6495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:08,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22746 Valid, 3748 Invalid, 6495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 6485 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-16 11:49:08,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-11-16 11:49:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 614. [2022-11-16 11:49:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.6557911908646004) internal successors, (1015), 613 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1015 transitions. [2022-11-16 11:49:08,949 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1015 transitions. Word has length 393 [2022-11-16 11:49:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:08,949 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1015 transitions. [2022-11-16 11:49:08,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 24.615384615384617) internal successors, (320), 13 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1015 transitions. [2022-11-16 11:49:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-16 11:49:08,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:08,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:08,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:09,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:49:09,175 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:09,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1785575110, now seen corresponding path program 1 times [2022-11-16 11:49:09,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:09,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314093920] [2022-11-16 11:49:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:09,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:09,289 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:09,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303010275] [2022-11-16 11:49:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:09,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:09,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:09,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:09,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:49:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:10,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3319 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 11:49:10,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:12,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-16 11:49:14,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:14,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314093920] [2022-11-16 11:49:14,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:14,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303010275] [2022-11-16 11:49:14,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303010275] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:14,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:49:14,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 25 [2022-11-16 11:49:14,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669579083] [2022-11-16 11:49:14,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:14,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:49:14,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:49:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:49:14,343 INFO L87 Difference]: Start difference. First operand 614 states and 1015 transitions. Second operand has 11 states, 11 states have (on average 29.09090909090909) internal successors, (320), 11 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:22,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:22,000 INFO L93 Difference]: Finished difference Result 3165 states and 5232 transitions. [2022-11-16 11:49:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:49:22,001 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 29.09090909090909) internal successors, (320), 11 states have internal predecessors, (320), 0 states have call successors, (0), 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 393 [2022-11-16 11:49:22,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:22,013 INFO L225 Difference]: With dead ends: 3165 [2022-11-16 11:49:22,013 INFO L226 Difference]: Without dead ends: 2670 [2022-11-16 11:49:22,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=500, Invalid=2692, Unknown=0, NotChecked=0, Total=3192 [2022-11-16 11:49:22,017 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 8142 mSDsluCounter, 5667 mSDsCounter, 0 mSdLazyCounter, 8439 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8142 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 8445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:22,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8142 Valid, 6393 Invalid, 8445 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 8439 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-16 11:49:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2022-11-16 11:49:22,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 596. [2022-11-16 11:49:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 595 states have (on average 1.6554621848739495) internal successors, (985), 595 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 985 transitions. [2022-11-16 11:49:22,043 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 985 transitions. Word has length 393 [2022-11-16 11:49:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:22,044 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 985 transitions. [2022-11-16 11:49:22,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.09090909090909) internal successors, (320), 11 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 985 transitions. [2022-11-16 11:49:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-11-16 11:49:22,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:22,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:22,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:22,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:49:22,269 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:22,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:22,269 INFO L85 PathProgramCache]: Analyzing trace with hash 371093882, now seen corresponding path program 1 times [2022-11-16 11:49:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:22,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837348223] [2022-11-16 11:49:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:22,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:22,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:22,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176751874] [2022-11-16 11:49:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:22,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:22,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:22,381 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:22,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:49:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:23,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 3322 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-16 11:49:23,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:26,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 11:49:28,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:28,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837348223] [2022-11-16 11:49:28,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:28,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176751874] [2022-11-16 11:49:28,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176751874] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:28,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:49:28,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 28 [2022-11-16 11:49:28,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841860504] [2022-11-16 11:49:28,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:28,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:49:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:49:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:49:28,572 INFO L87 Difference]: Start difference. First operand 596 states and 985 transitions. Second operand has 14 states, 14 states have (on average 23.071428571428573) internal successors, (323), 14 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:40,809 INFO L93 Difference]: Finished difference Result 2774 states and 4575 transitions. [2022-11-16 11:49:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-16 11:49:40,810 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.071428571428573) internal successors, (323), 14 states have internal predecessors, (323), 0 states have call successors, (0), 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 394 [2022-11-16 11:49:40,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:40,815 INFO L225 Difference]: With dead ends: 2774 [2022-11-16 11:49:40,815 INFO L226 Difference]: Without dead ends: 2772 [2022-11-16 11:49:40,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 816 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2854 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1401, Invalid=7155, Unknown=0, NotChecked=0, Total=8556 [2022-11-16 11:49:40,819 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 23476 mSDsluCounter, 4747 mSDsCounter, 0 mSdLazyCounter, 7672 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23476 SdHoareTripleChecker+Valid, 5185 SdHoareTripleChecker+Invalid, 7682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 7672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:40,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23476 Valid, 5185 Invalid, 7682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 7672 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-16 11:49:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2022-11-16 11:49:40,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 620. [2022-11-16 11:49:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 1.6558966074313408) internal successors, (1025), 619 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1025 transitions. [2022-11-16 11:49:40,843 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1025 transitions. Word has length 394 [2022-11-16 11:49:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:40,843 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 1025 transitions. [2022-11-16 11:49:40,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.071428571428573) internal successors, (323), 14 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1025 transitions. [2022-11-16 11:49:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-11-16 11:49:40,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:40,847 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:40,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:41,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:49:41,061 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash 371153464, now seen corresponding path program 1 times [2022-11-16 11:49:41,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:41,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714569165] [2022-11-16 11:49:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:41,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:41,164 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:41,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165148142] [2022-11-16 11:49:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:41,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:41,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:41,166 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:41,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:49:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:42,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 3322 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 11:49:42,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:44,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 11:49:46,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:46,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714569165] [2022-11-16 11:49:46,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:49:46,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165148142] [2022-11-16 11:49:46,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165148142] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:46,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:49:46,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 26 [2022-11-16 11:49:46,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641244470] [2022-11-16 11:49:46,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:46,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:49:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:46,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:49:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:49:46,687 INFO L87 Difference]: Start difference. First operand 620 states and 1025 transitions. Second operand has 12 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:54,932 INFO L93 Difference]: Finished difference Result 3219 states and 5322 transitions. [2022-11-16 11:49:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 11:49:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 0 states have call successors, (0), 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 394 [2022-11-16 11:49:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:54,937 INFO L225 Difference]: With dead ends: 3219 [2022-11-16 11:49:54,937 INFO L226 Difference]: Without dead ends: 2718 [2022-11-16 11:49:54,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=618, Invalid=3288, Unknown=0, NotChecked=0, Total=3906 [2022-11-16 11:49:54,940 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 8914 mSDsluCounter, 6457 mSDsCounter, 0 mSdLazyCounter, 9545 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8914 SdHoareTripleChecker+Valid, 7180 SdHoareTripleChecker+Invalid, 9549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:54,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8914 Valid, 7180 Invalid, 9549 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 9545 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-16 11:49:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2022-11-16 11:49:54,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 599. [2022-11-16 11:49:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.6555183946488294) internal successors, (990), 598 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 990 transitions. [2022-11-16 11:49:54,962 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 990 transitions. Word has length 394 [2022-11-16 11:49:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:54,962 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 990 transitions. [2022-11-16 11:49:54,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 990 transitions. [2022-11-16 11:49:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-11-16 11:49:54,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:54,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:54,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:55,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:49:55,179 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash 247150690, now seen corresponding path program 1 times [2022-11-16 11:49:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:55,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361057999] [2022-11-16 11:49:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:55,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:49:55,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961561705] [2022-11-16 11:49:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:55,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:55,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:55,303 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:55,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:49:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:56,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-16 11:49:56,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:59,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:50:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-16 11:50:01,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:01,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361057999] [2022-11-16 11:50:01,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:50:01,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961561705] [2022-11-16 11:50:01,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961561705] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:01,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:01,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 30 [2022-11-16 11:50:01,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612510474] [2022-11-16 11:50:01,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:01,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:50:01,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:01,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:50:01,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:50:01,598 INFO L87 Difference]: Start difference. First operand 599 states and 990 transitions. Second operand has 15 states, 15 states have (on average 21.733333333333334) internal successors, (326), 15 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:15,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:15,144 INFO L93 Difference]: Finished difference Result 2825 states and 4660 transitions. [2022-11-16 11:50:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-16 11:50:15,145 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.733333333333334) internal successors, (326), 15 states have internal predecessors, (326), 0 states have call successors, (0), 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 395 [2022-11-16 11:50:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:15,151 INFO L225 Difference]: With dead ends: 2825 [2022-11-16 11:50:15,151 INFO L226 Difference]: Without dead ends: 2823 [2022-11-16 11:50:15,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1702, Invalid=8804, Unknown=0, NotChecked=0, Total=10506 [2022-11-16 11:50:15,155 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 28006 mSDsluCounter, 3930 mSDsCounter, 0 mSdLazyCounter, 7787 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28006 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 7800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 7787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:15,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28006 Valid, 4362 Invalid, 7800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 7787 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-16 11:50:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-11-16 11:50:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 626. [2022-11-16 11:50:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.656) internal successors, (1035), 625 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1035 transitions. [2022-11-16 11:50:15,181 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1035 transitions. Word has length 395 [2022-11-16 11:50:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:15,182 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 1035 transitions. [2022-11-16 11:50:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.733333333333334) internal successors, (326), 15 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1035 transitions. [2022-11-16 11:50:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-11-16 11:50:15,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:15,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:15,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:15,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:15,407 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:15,407 INFO L85 PathProgramCache]: Analyzing trace with hash 247210272, now seen corresponding path program 1 times [2022-11-16 11:50:15,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:15,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69690193] [2022-11-16 11:50:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:15,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:15,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:50:15,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942350965] [2022-11-16 11:50:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:15,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:15,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:15,544 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:15,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:50:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:17,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-16 11:50:17,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:20,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:50:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-16 11:50:22,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:22,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69690193] [2022-11-16 11:50:22,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:50:22,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942350965] [2022-11-16 11:50:22,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942350965] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:22,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:22,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 31 [2022-11-16 11:50:22,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915093096] [2022-11-16 11:50:22,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:22,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:50:22,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:22,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:50:22,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:50:22,095 INFO L87 Difference]: Start difference. First operand 626 states and 1035 transitions. Second operand has 13 states, 13 states have (on average 25.076923076923077) internal successors, (326), 13 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:31,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:31,235 INFO L93 Difference]: Finished difference Result 3273 states and 5412 transitions. [2022-11-16 11:50:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 11:50:31,236 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.076923076923077) internal successors, (326), 13 states have internal predecessors, (326), 0 states have call successors, (0), 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 395 [2022-11-16 11:50:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:31,241 INFO L225 Difference]: With dead ends: 3273 [2022-11-16 11:50:31,241 INFO L226 Difference]: Without dead ends: 2766 [2022-11-16 11:50:31,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=776, Invalid=4480, Unknown=0, NotChecked=0, Total=5256 [2022-11-16 11:50:31,244 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 9693 mSDsluCounter, 7176 mSDsCounter, 0 mSdLazyCounter, 10501 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9693 SdHoareTripleChecker+Valid, 7896 SdHoareTripleChecker+Invalid, 10505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:31,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9693 Valid, 7896 Invalid, 10505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 10501 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-16 11:50:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2022-11-16 11:50:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 602. [2022-11-16 11:50:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.6555740432612314) internal successors, (995), 601 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 995 transitions. [2022-11-16 11:50:31,266 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 995 transitions. Word has length 395 [2022-11-16 11:50:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:31,267 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 995 transitions. [2022-11-16 11:50:31,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.076923076923077) internal successors, (326), 13 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 995 transitions. [2022-11-16 11:50:31,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-11-16 11:50:31,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:31,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:31,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-16 11:50:31,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:31,487 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:31,488 INFO L85 PathProgramCache]: Analyzing trace with hash 344317076, now seen corresponding path program 1 times [2022-11-16 11:50:31,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:31,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889863849] [2022-11-16 11:50:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:31,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:31,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:50:31,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531211666] [2022-11-16 11:50:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:31,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:31,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:31,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:31,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 11:50:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:33,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 3328 conjuncts, 113 conjunts are in the unsatisfiable core [2022-11-16 11:50:33,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:35,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:50:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-16 11:50:38,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:38,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889863849] [2022-11-16 11:50:38,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:50:38,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531211666] [2022-11-16 11:50:38,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531211666] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:38,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:38,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [18] total 32 [2022-11-16 11:50:38,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994141991] [2022-11-16 11:50:38,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:38,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:50:38,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:38,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:50:38,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:50:38,391 INFO L87 Difference]: Start difference. First operand 602 states and 995 transitions. Second operand has 16 states, 16 states have (on average 20.5625) internal successors, (329), 16 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:54,645 INFO L93 Difference]: Finished difference Result 2876 states and 4745 transitions. [2022-11-16 11:50:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-16 11:50:54,646 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.5625) internal successors, (329), 16 states have internal predecessors, (329), 0 states have call successors, (0), 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 396 [2022-11-16 11:50:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:54,653 INFO L225 Difference]: With dead ends: 2876 [2022-11-16 11:50:54,653 INFO L226 Difference]: Without dead ends: 2874 [2022-11-16 11:50:54,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4323 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2032, Invalid=10624, Unknown=0, NotChecked=0, Total=12656 [2022-11-16 11:50:54,656 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 28008 mSDsluCounter, 5339 mSDsCounter, 0 mSdLazyCounter, 9002 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28008 SdHoareTripleChecker+Valid, 5765 SdHoareTripleChecker+Invalid, 9012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 9002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:54,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28008 Valid, 5765 Invalid, 9012 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 9002 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-16 11:50:54,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2022-11-16 11:50:54,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 632. [2022-11-16 11:50:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 1.6561014263074485) internal successors, (1045), 631 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1045 transitions. [2022-11-16 11:50:54,682 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1045 transitions. Word has length 396 [2022-11-16 11:50:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:54,683 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1045 transitions. [2022-11-16 11:50:54,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.5625) internal successors, (329), 16 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1045 transitions. [2022-11-16 11:50:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-11-16 11:50:54,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:54,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:54,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:54,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 11:50:54,906 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:54,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash 344376658, now seen corresponding path program 1 times [2022-11-16 11:50:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:54,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702584532] [2022-11-16 11:50:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:54,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:55,047 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:50:55,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607448942] [2022-11-16 11:50:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:55,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:55,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:55,049 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:55,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 11:50:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:56,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3328 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-16 11:50:56,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:58,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:50:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-16 11:50:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:59,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702584532] [2022-11-16 11:50:59,844 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:50:59,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607448942] [2022-11-16 11:50:59,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607448942] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:59,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:59,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 27 [2022-11-16 11:50:59,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540550853] [2022-11-16 11:50:59,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:59,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:50:59,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:59,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:50:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:50:59,847 INFO L87 Difference]: Start difference. First operand 632 states and 1045 transitions. Second operand has 13 states, 13 states have (on average 25.307692307692307) internal successors, (329), 13 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:01,340 INFO L93 Difference]: Finished difference Result 2261 states and 3739 transitions. [2022-11-16 11:51:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:51:01,343 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.307692307692307) internal successors, (329), 13 states have internal predecessors, (329), 0 states have call successors, (0), 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 396 [2022-11-16 11:51:01,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:01,347 INFO L225 Difference]: With dead ends: 2261 [2022-11-16 11:51:01,347 INFO L226 Difference]: Without dead ends: 1748 [2022-11-16 11:51:01,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=465, Invalid=2505, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 11:51:01,349 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 8926 mSDsluCounter, 10056 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8926 SdHoareTripleChecker+Valid, 10982 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:01,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8926 Valid, 10982 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:51:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-11-16 11:51:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 602. [2022-11-16 11:51:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.6555740432612314) internal successors, (995), 601 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 995 transitions. [2022-11-16 11:51:01,369 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 995 transitions. Word has length 396 [2022-11-16 11:51:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:01,370 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 995 transitions. [2022-11-16 11:51:01,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.307692307692307) internal successors, (329), 13 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 995 transitions. [2022-11-16 11:51:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-16 11:51:01,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:01,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:01,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:01,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:01,591 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash -44447098, now seen corresponding path program 1 times [2022-11-16 11:51:01,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:01,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185207838] [2022-11-16 11:51:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:01,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:01,712 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:51:01,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384776416] [2022-11-16 11:51:01,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:01,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:01,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:01,714 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:01,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 11:51:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:03,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-16 11:51:03,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:06,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:51:08,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:08,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185207838] [2022-11-16 11:51:08,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:51:08,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384776416] [2022-11-16 11:51:08,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384776416] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:08,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:51:08,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [19] total 34 [2022-11-16 11:51:08,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928426778] [2022-11-16 11:51:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:08,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:51:08,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:08,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:51:08,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:51:08,863 INFO L87 Difference]: Start difference. First operand 602 states and 995 transitions. Second operand has 17 states, 17 states have (on average 19.529411764705884) internal successors, (332), 17 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:26,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:26,365 INFO L93 Difference]: Finished difference Result 3064 states and 5057 transitions. [2022-11-16 11:51:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-16 11:51:26,366 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.529411764705884) internal successors, (332), 17 states have internal predecessors, (332), 0 states have call successors, (0), 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 397 [2022-11-16 11:51:26,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:26,368 INFO L225 Difference]: With dead ends: 3064 [2022-11-16 11:51:26,368 INFO L226 Difference]: Without dead ends: 3062 [2022-11-16 11:51:26,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5033 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2327, Invalid=12193, Unknown=0, NotChecked=0, Total=14520 [2022-11-16 11:51:26,370 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 29583 mSDsluCounter, 5616 mSDsCounter, 0 mSdLazyCounter, 9681 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29583 SdHoareTripleChecker+Valid, 6036 SdHoareTripleChecker+Invalid, 9692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 9681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:26,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29583 Valid, 6036 Invalid, 9692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 9681 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-16 11:51:26,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2022-11-16 11:51:26,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 635. [2022-11-16 11:51:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6561514195583595) internal successors, (1050), 634 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1050 transitions. [2022-11-16 11:51:26,393 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1050 transitions. Word has length 397 [2022-11-16 11:51:26,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:26,393 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1050 transitions. [2022-11-16 11:51:26,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.529411764705884) internal successors, (332), 17 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1050 transitions. [2022-11-16 11:51:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-16 11:51:26,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:26,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:26,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:26,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:51:26,619 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:26,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash -44387516, now seen corresponding path program 1 times [2022-11-16 11:51:26,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:26,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860887234] [2022-11-16 11:51:26,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:26,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:26,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:51:26,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940294226] [2022-11-16 11:51:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:26,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:26,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:26,732 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:26,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 11:51:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:28,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-16 11:51:28,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:30,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:51:32,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:32,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860887234] [2022-11-16 11:51:32,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:51:32,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940294226] [2022-11-16 11:51:32,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940294226] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:32,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:51:32,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [19] total 30 [2022-11-16 11:51:32,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582263187] [2022-11-16 11:51:32,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:32,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:51:32,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:51:32,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:51:32,491 INFO L87 Difference]: Start difference. First operand 635 states and 1050 transitions. Second operand has 14 states, 14 states have (on average 23.714285714285715) internal successors, (332), 14 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:34,314 INFO L93 Difference]: Finished difference Result 2351 states and 3889 transitions. [2022-11-16 11:51:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:51:34,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.714285714285715) internal successors, (332), 14 states have internal predecessors, (332), 0 states have call successors, (0), 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 397 [2022-11-16 11:51:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:34,324 INFO L225 Difference]: With dead ends: 2351 [2022-11-16 11:51:34,324 INFO L226 Difference]: Without dead ends: 1820 [2022-11-16 11:51:34,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=554, Invalid=3106, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 11:51:34,327 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 9703 mSDsluCounter, 10979 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9703 SdHoareTripleChecker+Valid, 11903 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:34,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9703 Valid, 11903 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:51:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2022-11-16 11:51:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 602. [2022-11-16 11:51:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.6555740432612314) internal successors, (995), 601 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:34,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 995 transitions. [2022-11-16 11:51:34,347 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 995 transitions. Word has length 397 [2022-11-16 11:51:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:34,347 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 995 transitions. [2022-11-16 11:51:34,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.714285714285715) internal successors, (332), 14 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 995 transitions. [2022-11-16 11:51:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-11-16 11:51:34,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:34,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:34,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:34,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:51:34,575 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:34,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1914688020, now seen corresponding path program 1 times [2022-11-16 11:51:34,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:34,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18485831] [2022-11-16 11:51:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:34,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:34,698 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:51:34,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451124325] [2022-11-16 11:51:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:34,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:34,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:34,700 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:34,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 11:51:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:36,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 3334 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-16 11:51:36,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:39,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-16 11:51:41,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:41,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18485831] [2022-11-16 11:51:41,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:51:41,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451124325] [2022-11-16 11:51:41,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451124325] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:41,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:51:41,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [20] total 36 [2022-11-16 11:51:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945378494] [2022-11-16 11:51:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:41,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:51:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:51:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1153, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 11:51:41,858 INFO L87 Difference]: Start difference. First operand 602 states and 995 transitions. Second operand has 18 states, 18 states have (on average 18.61111111111111) internal successors, (335), 18 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:01,129 INFO L93 Difference]: Finished difference Result 3026 states and 4998 transitions. [2022-11-16 11:52:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-16 11:52:01,130 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 18.61111111111111) internal successors, (335), 18 states have internal predecessors, (335), 0 states have call successors, (0), 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 398 [2022-11-16 11:52:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:01,132 INFO L225 Difference]: With dead ends: 3026 [2022-11-16 11:52:01,132 INFO L226 Difference]: Without dead ends: 3024 [2022-11-16 11:52:01,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 847 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6096 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2779, Invalid=14777, Unknown=0, NotChecked=0, Total=17556 [2022-11-16 11:52:01,135 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 33475 mSDsluCounter, 4905 mSDsCounter, 0 mSdLazyCounter, 9869 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33475 SdHoareTripleChecker+Valid, 5319 SdHoareTripleChecker+Invalid, 9879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 9869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:01,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33475 Valid, 5319 Invalid, 9879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 9869 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-11-16 11:52:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2022-11-16 11:52:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 638. [2022-11-16 11:52:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 1.6562009419152277) internal successors, (1055), 637 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1055 transitions. [2022-11-16 11:52:01,158 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1055 transitions. Word has length 398 [2022-11-16 11:52:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:01,159 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1055 transitions. [2022-11-16 11:52:01,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.61111111111111) internal successors, (335), 18 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1055 transitions. [2022-11-16 11:52:01,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-11-16 11:52:01,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:01,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:01,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:01,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:52:01,383 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1914628438, now seen corresponding path program 1 times [2022-11-16 11:52:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:01,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844225898] [2022-11-16 11:52:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:01,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:01,486 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:52:01,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090263141] [2022-11-16 11:52:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:01,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:01,488 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:01,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 11:52:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:03,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 3334 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-16 11:52:03,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:05,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-16 11:52:07,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:07,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844225898] [2022-11-16 11:52:07,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:52:07,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090263141] [2022-11-16 11:52:07,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090263141] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:07,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:52:07,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [20] total 34 [2022-11-16 11:52:07,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747699205] [2022-11-16 11:52:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:07,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:52:07,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:07,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:52:07,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:52:07,702 INFO L87 Difference]: Start difference. First operand 638 states and 1055 transitions. Second operand has 16 states, 16 states have (on average 20.9375) internal successors, (335), 16 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:20,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:20,517 INFO L93 Difference]: Finished difference Result 3531 states and 5842 transitions. [2022-11-16 11:52:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 11:52:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.9375) internal successors, (335), 16 states have internal predecessors, (335), 0 states have call successors, (0), 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 398 [2022-11-16 11:52:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:20,521 INFO L225 Difference]: With dead ends: 3531 [2022-11-16 11:52:20,521 INFO L226 Difference]: Without dead ends: 2994 [2022-11-16 11:52:20,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 817 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2508 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1254, Invalid=6936, Unknown=0, NotChecked=0, Total=8190 [2022-11-16 11:52:20,524 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 12060 mSDsluCounter, 9315 mSDsCounter, 0 mSdLazyCounter, 13387 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12060 SdHoareTripleChecker+Valid, 10026 SdHoareTripleChecker+Invalid, 13391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:20,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12060 Valid, 10026 Invalid, 13391 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 13387 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-16 11:52:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2022-11-16 11:52:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 611. [2022-11-16 11:52:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.6557377049180328) internal successors, (1010), 610 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1010 transitions. [2022-11-16 11:52:20,551 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1010 transitions. Word has length 398 [2022-11-16 11:52:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:20,552 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1010 transitions. [2022-11-16 11:52:20,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.9375) internal successors, (335), 16 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1010 transitions. [2022-11-16 11:52:20,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-11-16 11:52:20,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:20,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:20,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:20,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 11:52:20,775 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:20,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:20,776 INFO L85 PathProgramCache]: Analyzing trace with hash -145955220, now seen corresponding path program 1 times [2022-11-16 11:52:20,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:20,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027831917] [2022-11-16 11:52:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:20,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:20,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:52:20,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544258649] [2022-11-16 11:52:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:20,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:20,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:20,907 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:20,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 11:52:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:23,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3337 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-16 11:52:23,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:27,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:31,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:31,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027831917] [2022-11-16 11:52:31,527 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:52:31,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544258649] [2022-11-16 11:52:31,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544258649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:31,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:52:31,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2022-11-16 11:52:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175811943] [2022-11-16 11:52:31,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:31,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:52:31,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:31,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:52:31,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:52:31,529 INFO L87 Difference]: Start difference. First operand 611 states and 1010 transitions. Second operand has 19 states, 19 states have (on average 41.89473684210526) internal successors, (796), 19 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:47,940 INFO L93 Difference]: Finished difference Result 12065 states and 19926 transitions. [2022-11-16 11:52:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-16 11:52:47,941 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 41.89473684210526) internal successors, (796), 19 states have internal predecessors, (796), 0 states have call successors, (0), 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 399 [2022-11-16 11:52:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:47,951 INFO L225 Difference]: With dead ends: 12065 [2022-11-16 11:52:47,951 INFO L226 Difference]: Without dead ends: 11555 [2022-11-16 11:52:47,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2625 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2017, Invalid=5815, Unknown=0, NotChecked=0, Total=7832 [2022-11-16 11:52:47,954 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 40902 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 11718 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40902 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 11784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 11718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:47,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40902 Valid, 2972 Invalid, 11784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 11718 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-16 11:52:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11555 states. [2022-11-16 11:52:48,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11555 to 1217. [2022-11-16 11:52:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1216 states have (on average 1.6570723684210527) internal successors, (2015), 1216 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2015 transitions. [2022-11-16 11:52:48,034 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2015 transitions. Word has length 399 [2022-11-16 11:52:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:48,035 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 2015 transitions. [2022-11-16 11:52:48,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 41.89473684210526) internal successors, (796), 19 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2015 transitions. [2022-11-16 11:52:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-11-16 11:52:48,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:48,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:48,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:48,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 11:52:48,255 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:48,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:48,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1330764952, now seen corresponding path program 1 times [2022-11-16 11:52:48,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:48,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854930939] [2022-11-16 11:52:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:48,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:48,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:52:48,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130735274] [2022-11-16 11:52:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:48,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:48,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:48,371 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:48,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 11:52:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:50,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 3340 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-16 11:52:50,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:53,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:56,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854930939] [2022-11-16 11:52:56,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:52:56,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130735274] [2022-11-16 11:52:56,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130735274] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:56,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:52:56,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2022-11-16 11:52:56,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419511594] [2022-11-16 11:52:56,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:56,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:52:56,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:52:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:52:56,615 INFO L87 Difference]: Start difference. First operand 1217 states and 2015 transitions. Second operand has 27 states, 27 states have (on average 29.555555555555557) internal successors, (798), 27 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:24,598 INFO L93 Difference]: Finished difference Result 33985 states and 56241 transitions. [2022-11-16 11:53:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2022-11-16 11:53:24,600 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 29.555555555555557) internal successors, (798), 27 states have internal predecessors, (798), 0 states have call successors, (0), 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 400 [2022-11-16 11:53:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:24,622 INFO L225 Difference]: With dead ends: 33985 [2022-11-16 11:53:24,622 INFO L226 Difference]: Without dead ends: 32770 [2022-11-16 11:53:24,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 813 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17960 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=8761, Invalid=38111, Unknown=0, NotChecked=0, Total=46872 [2022-11-16 11:53:24,632 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 71459 mSDsluCounter, 3951 mSDsCounter, 0 mSdLazyCounter, 17707 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71459 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 17784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 17707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:24,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71459 Valid, 4223 Invalid, 17784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 17707 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2022-11-16 11:53:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32770 states. [2022-11-16 11:53:24,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32770 to 1217. [2022-11-16 11:53:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1216 states have (on average 1.6570723684210527) internal successors, (2015), 1216 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2015 transitions. [2022-11-16 11:53:24,820 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2015 transitions. Word has length 400 [2022-11-16 11:53:24,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:24,821 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 2015 transitions. [2022-11-16 11:53:24,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 29.555555555555557) internal successors, (798), 27 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2015 transitions. [2022-11-16 11:53:24,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-11-16 11:53:24,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:24,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:24,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:25,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 11:53:25,039 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:25,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:25,039 INFO L85 PathProgramCache]: Analyzing trace with hash 490868132, now seen corresponding path program 1 times [2022-11-16 11:53:25,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:25,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566482202] [2022-11-16 11:53:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:25,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:25,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:53:25,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423807483] [2022-11-16 11:53:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:25,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:25,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:25,196 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:25,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 11:53:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:27,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 3343 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-16 11:53:27,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:30,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:34,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:34,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566482202] [2022-11-16 11:53:34,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:53:34,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423807483] [2022-11-16 11:53:34,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423807483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:34,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:53:34,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2022-11-16 11:53:34,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351630494] [2022-11-16 11:53:34,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:34,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 11:53:34,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:34,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 11:53:34,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 11:53:34,309 INFO L87 Difference]: Start difference. First operand 1217 states and 2015 transitions. Second operand has 35 states, 35 states have (on average 22.857142857142858) internal successors, (800), 35 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:15,668 INFO L93 Difference]: Finished difference Result 35545 states and 58841 transitions. [2022-11-16 11:54:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2022-11-16 11:54:15,669 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 22.857142857142858) internal successors, (800), 35 states have internal predecessors, (800), 0 states have call successors, (0), 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 401 [2022-11-16 11:54:15,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:15,693 INFO L225 Difference]: With dead ends: 35545 [2022-11-16 11:54:15,693 INFO L226 Difference]: Without dead ends: 34330 [2022-11-16 11:54:15,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47954 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=19353, Invalid=99327, Unknown=0, NotChecked=0, Total=118680 [2022-11-16 11:54:15,705 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 89730 mSDsluCounter, 4901 mSDsCounter, 0 mSdLazyCounter, 22429 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89730 SdHoareTripleChecker+Valid, 5165 SdHoareTripleChecker+Invalid, 22499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 22429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:15,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89730 Valid, 5165 Invalid, 22499 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [70 Valid, 22429 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2022-11-16 11:54:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34330 states. [2022-11-16 11:54:15,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34330 to 1217. [2022-11-16 11:54:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1216 states have (on average 1.6570723684210527) internal successors, (2015), 1216 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2015 transitions. [2022-11-16 11:54:15,887 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2015 transitions. Word has length 401 [2022-11-16 11:54:15,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:15,888 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 2015 transitions. [2022-11-16 11:54:15,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 22.857142857142858) internal successors, (800), 35 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2015 transitions. [2022-11-16 11:54:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-16 11:54:15,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:15,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:15,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 11:54:16,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 11:54:16,107 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1545496728, now seen corresponding path program 1 times [2022-11-16 11:54:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:16,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280849179] [2022-11-16 11:54:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:16,218 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:54:16,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236485537] [2022-11-16 11:54:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:16,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:16,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:16,220 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:16,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 11:54:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:18,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-16 11:54:18,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:22,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:27,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:27,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280849179] [2022-11-16 11:54:27,752 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:54:27,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236485537] [2022-11-16 11:54:27,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236485537] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:27,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:54:27,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 45 [2022-11-16 11:54:27,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035932384] [2022-11-16 11:54:27,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:27,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 11:54:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 11:54:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1840, Unknown=0, NotChecked=0, Total=1980 [2022-11-16 11:54:27,756 INFO L87 Difference]: Start difference. First operand 1217 states and 2015 transitions. Second operand has 45 states, 45 states have (on average 17.822222222222223) internal successors, (802), 45 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:26,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:26,048 INFO L93 Difference]: Finished difference Result 69610 states and 115194 transitions. [2022-11-16 11:56:26,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 786 states. [2022-11-16 11:56:26,050 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 17.822222222222223) internal successors, (802), 45 states have internal predecessors, (802), 0 states have call successors, (0), 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 402 [2022-11-16 11:56:26,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:26,110 INFO L225 Difference]: With dead ends: 69610 [2022-11-16 11:56:26,110 INFO L226 Difference]: Without dead ends: 68395 [2022-11-16 11:56:26,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1668 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 824 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307435 ImplicationChecksByTransitivity, 64.1s TimeCoverageRelationStatistics Valid=81870, Invalid=599580, Unknown=0, NotChecked=0, Total=681450 [2022-11-16 11:56:26,152 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 151591 mSDsluCounter, 10544 mSDsCounter, 0 mSdLazyCounter, 50136 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151591 SdHoareTripleChecker+Valid, 11039 SdHoareTripleChecker+Invalid, 50241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 50136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:26,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151591 Valid, 11039 Invalid, 50241 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [105 Valid, 50136 Invalid, 0 Unknown, 0 Unchecked, 45.9s Time] [2022-11-16 11:56:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68395 states. [2022-11-16 11:56:26,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68395 to 1217. [2022-11-16 11:56:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1216 states have (on average 1.6570723684210527) internal successors, (2015), 1216 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2015 transitions. [2022-11-16 11:56:26,487 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2015 transitions. Word has length 402 [2022-11-16 11:56:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:26,488 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 2015 transitions. [2022-11-16 11:56:26,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 17.822222222222223) internal successors, (802), 45 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2015 transitions. [2022-11-16 11:56:26,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-16 11:56:26,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:26,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:26,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:26,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:26,707 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:26,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash 151426786, now seen corresponding path program 1 times [2022-11-16 11:56:26,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:26,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064819556] [2022-11-16 11:56:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:26,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:26,819 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:56:26,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102578570] [2022-11-16 11:56:26,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:26,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:26,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:26,821 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:26,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 11:56:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:28,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 3349 conjuncts, 153 conjunts are in the unsatisfiable core [2022-11-16 11:56:29,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:56:33,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:56:38,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:38,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064819556] [2022-11-16 11:56:38,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:56:38,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102578570] [2022-11-16 11:56:38,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102578570] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:38,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:56:38,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [18] total 32 [2022-11-16 11:56:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49505897] [2022-11-16 11:56:38,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:38,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:56:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:38,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:56:38,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:56:38,686 INFO L87 Difference]: Start difference. First operand 1217 states and 2015 transitions. Second operand has 16 states, 16 states have (on average 25.1875) internal successors, (403), 16 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:13,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:13,570 INFO L93 Difference]: Finished difference Result 21019 states and 34816 transitions. [2022-11-16 11:57:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-11-16 11:57:13,571 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 25.1875) internal successors, (403), 16 states have internal predecessors, (403), 0 states have call successors, (0), 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 403 [2022-11-16 11:57:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:13,585 INFO L225 Difference]: With dead ends: 21019 [2022-11-16 11:57:13,585 INFO L226 Difference]: Without dead ends: 21017 [2022-11-16 11:57:13,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7073 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=3063, Invalid=16959, Unknown=0, NotChecked=0, Total=20022 [2022-11-16 11:57:13,590 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 40881 mSDsluCounter, 6234 mSDsCounter, 0 mSdLazyCounter, 15653 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40881 SdHoareTripleChecker+Valid, 6746 SdHoareTripleChecker+Invalid, 15699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 15653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:13,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40881 Valid, 6746 Invalid, 15699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 15653 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2022-11-16 11:57:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21017 states. [2022-11-16 11:57:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21017 to 2428. [2022-11-16 11:57:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2427 states have (on average 1.657601977750309) internal successors, (4023), 2427 states have internal predecessors, (4023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 4023 transitions. [2022-11-16 11:57:13,718 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 4023 transitions. Word has length 403 [2022-11-16 11:57:13,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:13,718 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 4023 transitions. [2022-11-16 11:57:13,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 25.1875) internal successors, (403), 16 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:13,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 4023 transitions. [2022-11-16 11:57:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-16 11:57:13,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:13,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:13,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:13,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:13,947 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash 151486368, now seen corresponding path program 1 times [2022-11-16 11:57:13,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:13,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397957864] [2022-11-16 11:57:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:14,056 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:57:14,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326722232] [2022-11-16 11:57:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:14,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:14,058 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:14,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 11:57:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:16,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 3349 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-16 11:57:16,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:19,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:23,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:23,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397957864] [2022-11-16 11:57:23,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:57:23,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326722232] [2022-11-16 11:57:23,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326722232] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:23,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:23,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 28 [2022-11-16 11:57:23,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067461398] [2022-11-16 11:57:23,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:23,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:57:23,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:23,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:57:23,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:57:23,453 INFO L87 Difference]: Start difference. First operand 2428 states and 4023 transitions. Second operand has 13 states, 13 states have (on average 31.0) internal successors, (403), 13 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:45,371 INFO L93 Difference]: Finished difference Result 19965 states and 33090 transitions. [2022-11-16 11:57:45,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-16 11:57:45,372 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 31.0) internal successors, (403), 13 states have internal predecessors, (403), 0 states have call successors, (0), 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 403 [2022-11-16 11:57:45,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:45,385 INFO L225 Difference]: With dead ends: 19965 [2022-11-16 11:57:45,385 INFO L226 Difference]: Without dead ends: 17539 [2022-11-16 11:57:45,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5063 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1966, Invalid=10690, Unknown=0, NotChecked=0, Total=12656 [2022-11-16 11:57:45,391 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 31915 mSDsluCounter, 7851 mSDsCounter, 0 mSdLazyCounter, 12717 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31915 SdHoareTripleChecker+Valid, 8765 SdHoareTripleChecker+Invalid, 12733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 12717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:45,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31915 Valid, 8765 Invalid, 12733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 12717 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2022-11-16 11:57:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17539 states. [2022-11-16 11:57:45,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17539 to 2352. [2022-11-16 11:57:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2351 states have (on average 1.6575925138239047) internal successors, (3897), 2351 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3897 transitions. [2022-11-16 11:57:45,496 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3897 transitions. Word has length 403 [2022-11-16 11:57:45,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:45,497 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 3897 transitions. [2022-11-16 11:57:45,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 31.0) internal successors, (403), 13 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3897 transitions. [2022-11-16 11:57:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-16 11:57:45,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:45,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:45,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:45,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:45,719 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:45,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:45,719 INFO L85 PathProgramCache]: Analyzing trace with hash 11246360, now seen corresponding path program 1 times [2022-11-16 11:57:45,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:45,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508276986] [2022-11-16 11:57:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:45,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:45,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:57:45,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192643174] [2022-11-16 11:57:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:45,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:45,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:45,841 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:45,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 11:57:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:48,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-16 11:57:48,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:50,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:50,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:50,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508276986] [2022-11-16 11:57:50,805 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:57:50,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192643174] [2022-11-16 11:57:50,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192643174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:50,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:50,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:57:50,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270150837] [2022-11-16 11:57:50,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:50,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:57:50,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:57:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:57:50,808 INFO L87 Difference]: Start difference. First operand 2352 states and 3897 transitions. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:00,018 INFO L93 Difference]: Finished difference Result 8404 states and 13923 transitions. [2022-11-16 11:58:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:58:00,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 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 404 [2022-11-16 11:58:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:00,024 INFO L225 Difference]: With dead ends: 8404 [2022-11-16 11:58:00,024 INFO L226 Difference]: Without dead ends: 6054 [2022-11-16 11:58:00,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:58:00,027 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 4131 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 8231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4131 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 8233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:00,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4131 Valid, 2030 Invalid, 8233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8231 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-16 11:58:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6054 states. [2022-11-16 11:58:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6054 to 2623. [2022-11-16 11:58:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2622 states have (on average 1.6552250190694127) internal successors, (4340), 2622 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4340 transitions. [2022-11-16 11:58:00,091 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4340 transitions. Word has length 404 [2022-11-16 11:58:00,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:00,092 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 4340 transitions. [2022-11-16 11:58:00,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:00,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4340 transitions. [2022-11-16 11:58:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-16 11:58:00,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:00,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:00,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:00,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-16 11:58:00,324 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:00,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:00,324 INFO L85 PathProgramCache]: Analyzing trace with hash 488979226, now seen corresponding path program 1 times [2022-11-16 11:58:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:00,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635789787] [2022-11-16 11:58:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:00,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:00,432 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:58:00,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287991823] [2022-11-16 11:58:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:00,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:00,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:00,434 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:00,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 11:58:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:03,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-16 11:58:03,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:05,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:05,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:05,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635789787] [2022-11-16 11:58:05,864 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:58:05,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287991823] [2022-11-16 11:58:05,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287991823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:05,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:05,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:58:05,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760453855] [2022-11-16 11:58:05,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:05,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:58:05,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:05,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:58:05,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:58:05,866 INFO L87 Difference]: Start difference. First operand 2623 states and 4340 transitions. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:15,451 INFO L93 Difference]: Finished difference Result 9424 states and 15600 transitions. [2022-11-16 11:58:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:58:15,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 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 404 [2022-11-16 11:58:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:15,458 INFO L225 Difference]: With dead ends: 9424 [2022-11-16 11:58:15,458 INFO L226 Difference]: Without dead ends: 7074 [2022-11-16 11:58:15,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:58:15,461 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 5044 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 7381 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5044 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 7384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:15,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5044 Valid, 1819 Invalid, 7384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7381 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-16 11:58:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7074 states. [2022-11-16 11:58:15,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7074 to 2653. [2022-11-16 11:58:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2652 states have (on average 1.6553544494720964) internal successors, (4390), 2652 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4390 transitions. [2022-11-16 11:58:15,532 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4390 transitions. Word has length 404 [2022-11-16 11:58:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:15,533 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4390 transitions. [2022-11-16 11:58:15,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:15,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4390 transitions. [2022-11-16 11:58:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-16 11:58:15,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:15,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:15,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:15,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-16 11:58:15,755 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:15,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:15,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1573943208, now seen corresponding path program 1 times [2022-11-16 11:58:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:15,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5053331] [2022-11-16 11:58:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:15,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:15,862 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:58:15,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117274058] [2022-11-16 11:58:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:15,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:15,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:15,864 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:15,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-16 11:58:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:19,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-16 11:58:19,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:21,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:21,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:21,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5053331] [2022-11-16 11:58:21,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:58:21,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117274058] [2022-11-16 11:58:21,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117274058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:21,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:21,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:58:21,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635262119] [2022-11-16 11:58:21,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:21,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:58:21,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:21,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:58:21,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:58:21,776 INFO L87 Difference]: Start difference. First operand 2653 states and 4390 transitions. Second operand has 8 states, 8 states have (on average 50.5) internal successors, (404), 8 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:28,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:28,856 INFO L93 Difference]: Finished difference Result 7833 states and 12971 transitions. [2022-11-16 11:58:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:58:28,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 50.5) internal successors, (404), 8 states have internal predecessors, (404), 0 states have call successors, (0), 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 404 [2022-11-16 11:58:28,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:28,861 INFO L225 Difference]: With dead ends: 7833 [2022-11-16 11:58:28,861 INFO L226 Difference]: Without dead ends: 5483 [2022-11-16 11:58:28,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:58:28,864 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 3345 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 5992 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3345 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 5994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:28,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3345 Valid, 1494 Invalid, 5994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5992 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-16 11:58:28,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2022-11-16 11:58:28,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 2638. [2022-11-16 11:58:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2637 states have (on average 1.6552901023890785) internal successors, (4365), 2637 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4365 transitions. [2022-11-16 11:58:28,923 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4365 transitions. Word has length 404 [2022-11-16 11:58:28,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:28,924 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 4365 transitions. [2022-11-16 11:58:28,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 50.5) internal successors, (404), 8 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4365 transitions. [2022-11-16 11:58:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-16 11:58:28,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:28,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:28,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:29,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-16 11:58:29,143 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:29,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash 820098774, now seen corresponding path program 1 times [2022-11-16 11:58:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:29,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192231157] [2022-11-16 11:58:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:29,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:58:29,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423228508] [2022-11-16 11:58:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:29,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:29,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:29,263 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:29,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-16 11:58:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:31,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-16 11:58:31,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:38,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:58:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:42,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:42,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192231157] [2022-11-16 11:58:42,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:58:42,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423228508] [2022-11-16 11:58:42,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423228508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:58:42,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:58:42,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 29 [2022-11-16 11:58:42,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964426709] [2022-11-16 11:58:42,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:58:42,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 11:58:42,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 11:58:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:58:42,824 INFO L87 Difference]: Start difference. First operand 2638 states and 4365 transitions. Second operand has 29 states, 29 states have (on average 27.79310344827586) internal successors, (806), 29 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:00:09,371 INFO L93 Difference]: Finished difference Result 92687 states and 153349 transitions. [2022-11-16 12:00:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2022-11-16 12:00:09,372 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 27.79310344827586) internal successors, (806), 29 states have internal predecessors, (806), 0 states have call successors, (0), 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 404 [2022-11-16 12:00:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:00:09,436 INFO L225 Difference]: With dead ends: 92687 [2022-11-16 12:00:09,436 INFO L226 Difference]: Without dead ends: 90337 [2022-11-16 12:00:09,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36473 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=15036, Invalid=60314, Unknown=0, NotChecked=0, Total=75350 [2022-11-16 12:00:09,448 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 56732 mSDsluCounter, 8568 mSDsCounter, 0 mSdLazyCounter, 36294 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56732 SdHoareTripleChecker+Valid, 8980 SdHoareTripleChecker+Invalid, 36370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 36294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:00:09,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56732 Valid, 8980 Invalid, 36370 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [76 Valid, 36294 Invalid, 0 Unknown, 0 Unchecked, 50.4s Time] [2022-11-16 12:00:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90337 states. [2022-11-16 12:00:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90337 to 5652. [2022-11-16 12:00:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5651 states have (on average 1.6582905680410547) internal successors, (9371), 5651 states have internal predecessors, (9371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 9371 transitions. [2022-11-16 12:00:10,010 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 9371 transitions. Word has length 404 [2022-11-16 12:00:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:00:10,010 INFO L495 AbstractCegarLoop]: Abstraction has 5652 states and 9371 transitions. [2022-11-16 12:00:10,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 27.79310344827586) internal successors, (806), 29 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 9371 transitions. [2022-11-16 12:00:10,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-11-16 12:00:10,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:00:10,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:10,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:10,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-16 12:00:10,215 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:00:10,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash 736371374, now seen corresponding path program 1 times [2022-11-16 12:00:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:10,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531256044] [2022-11-16 12:00:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:10,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:10,325 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:10,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240763336] [2022-11-16 12:00:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:10,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:10,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:10,327 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:10,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a87545-3699-42c3-8917-e5b938c56d94/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-16 12:00:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 3355 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-16 12:00:12,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:13,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:13,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:13,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531256044] [2022-11-16 12:00:13,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:13,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240763336] [2022-11-16 12:00:13,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240763336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:13,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:13,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:00:13,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873293614] [2022-11-16 12:00:13,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:13,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:00:13,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:13,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:00:13,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:00:13,871 INFO L87 Difference]: Start difference. First operand 5652 states and 9371 transitions. Second operand has 8 states, 8 states have (on average 50.625) internal successors, (405), 8 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)