./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f77dea8ac4e90769e7f79fe586c3bc8814d52e2350b8c4d8b140363f12c9ac8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:11:55,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:11:55,581 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:11:55,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:11:55,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:11:55,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:11:55,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:11:55,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:11:55,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:11:55,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:11:55,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:11:55,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:11:55,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:11:55,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:11:55,624 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:11:55,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:11:55,625 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:11:55,625 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:11:55,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:11:55,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:11:55,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:11:55,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:11:55,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:11:55,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:11:55,627 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:11:55,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:11:55,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:11:55,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:11:55,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:11:55,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:11:55,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:11:55,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:11:55,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:11:55,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:11:55,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:11:55,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:11:55,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:11:55,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:11:55,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:11:55,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:11:55,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:11:55,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:11:55,635 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f77dea8ac4e90769e7f79fe586c3bc8814d52e2350b8c4d8b140363f12c9ac8 [2024-11-08 18:11:55,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:11:55,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:11:55,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:11:55,922 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:11:55,922 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:11:55,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c Unable to find full path for "g++" [2024-11-08 18:11:57,990 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:11:58,221 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:11:58,222 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c [2024-11-08 18:11:58,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/data/e9e81918f/f38c6f86163741eeb027c49e80c6c179/FLAGb382508ce [2024-11-08 18:11:58,242 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/data/e9e81918f/f38c6f86163741eeb027c49e80c6c179 [2024-11-08 18:11:58,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:11:58,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:11:58,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:11:58,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:11:58,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:11:58,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea20f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58, skipping insertion in model container [2024-11-08 18:11:58,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:11:58,451 WARN L250 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_bb0bc19b-fe13-44cb-b44a-fd58439462a7/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c[1055,1068] [2024-11-08 18:11:58,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:11:58,482 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:11:58,495 WARN L250 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_bb0bc19b-fe13-44cb-b44a-fd58439462a7/sv-benchmarks/c/recursified_nla-digbench/recursified_geo3-ll.c[1055,1068] [2024-11-08 18:11:58,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:11:58,524 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:11:58,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58 WrapperNode [2024-11-08 18:11:58,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:11:58,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:11:58,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:11:58,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:11:58,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,564 INFO L138 Inliner]: procedures = 16, calls = 66, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 85 [2024-11-08 18:11:58,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:11:58,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:11:58,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:11:58,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:11:58,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,601 INFO L175 MemorySlicer]: Split 36 memory accesses to 8 slices as follows [2, 8, 4, 6, 3, 2, 6, 5]. 22 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 10 writes are split as follows [0, 2, 2, 1, 1, 1, 1, 2]. [2024-11-08 18:11:58,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:11:58,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:11:58,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:11:58,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:11:58,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (1/1) ... [2024-11-08 18:11:58,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:11:58,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:58,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:11:58,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:11:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:11:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:11:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:11:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 18:11:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 18:11:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 18:11:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-08 18:11:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-08 18:11:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-08 18:11:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:11:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:11:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:11:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 18:11:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 18:11:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 18:11:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-08 18:11:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-08 18:11:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-08 18:11:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-11-08 18:11:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-11-08 18:11:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:11:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:11:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:11:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:11:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 18:11:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 18:11:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 18:11:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-08 18:11:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-08 18:11:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-08 18:11:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 18:11:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 18:11:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:11:58,796 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:11:58,799 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:11:59,050 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-08 18:11:59,050 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:11:59,062 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:11:59,063 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:11:59,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:11:59 BoogieIcfgContainer [2024-11-08 18:11:59,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:11:59,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:11:59,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:11:59,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:11:59,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:11:58" (1/3) ... [2024-11-08 18:11:59,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba76050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:11:59, skipping insertion in model container [2024-11-08 18:11:59,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:11:58" (2/3) ... [2024-11-08 18:11:59,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba76050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:11:59, skipping insertion in model container [2024-11-08 18:11:59,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:11:59" (3/3) ... [2024-11-08 18:11:59,073 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo3-ll.c [2024-11-08 18:11:59,092 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:11:59,092 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:11:59,161 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:11:59,172 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@587d823b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:11:59,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:11:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 18:11:59,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 18:11:59,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:59,187 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:59,188 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:59,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash -831245217, now seen corresponding path program 1 times [2024-11-08 18:11:59,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:59,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044183176] [2024-11-08 18:11:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:59,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:11:59,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868165024] [2024-11-08 18:11:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:59,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:59,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:59,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:11:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:59,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-08 18:11:59,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:11:59,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:11:59,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:11:59,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 18:11:59,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 18:11:59,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:12:00,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-08 18:12:00,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2024-11-08 18:12:00,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-08 18:12:00,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-08 18:12:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:12:00,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:12:00,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:00,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044183176] [2024-11-08 18:12:00,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 18:12:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868165024] [2024-11-08 18:12:00,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868165024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:12:00,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:12:00,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:12:00,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740690648] [2024-11-08 18:12:00,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:12:00,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:12:00,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:12:00,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:12:00,345 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:00,677 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2024-11-08 18:12:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:12:00,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 18:12:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:00,688 INFO L225 Difference]: With dead ends: 55 [2024-11-08 18:12:00,689 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 18:12:00,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:12:00,698 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:00,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 105 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:12:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 18:12:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-08 18:12:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 18:12:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-08 18:12:00,747 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 9 [2024-11-08 18:12:00,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:00,748 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-08 18:12:00,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:00,748 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-08 18:12:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 18:12:00,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:00,749 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:00,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:12:00,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-08 18:12:00,950 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:00,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -958977162, now seen corresponding path program 1 times [2024-11-08 18:12:00,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:00,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800900514] [2024-11-08 18:12:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:00,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:12:01,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879745185] [2024-11-08 18:12:01,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:01,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:01,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:01,130 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:01,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:12:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:02,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-11-08 18:12:02,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:02,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:12:02,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 18:12:02,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:12:02,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:12:02,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 18:12:03,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 18:12:03,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-08 18:12:03,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2024-11-08 18:12:03,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 18:12:03,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2024-11-08 18:12:03,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-08 18:12:03,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-08 18:12:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:12:03,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:14,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:14,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800900514] [2024-11-08 18:12:14,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 18:12:14,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879745185] [2024-11-08 18:12:14,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879745185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:14,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:12:14,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-08 18:12:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276789691] [2024-11-08 18:12:14,050 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:14,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:12:14,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:12:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=285, Unknown=2, NotChecked=0, Total=342 [2024-11-08 18:12:14,053 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:12:16,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:16,479 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2024-11-08 18:12:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:12:16,481 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-08 18:12:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:16,483 INFO L225 Difference]: With dead ends: 54 [2024-11-08 18:12:16,483 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 18:12:16,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=98, Invalid=452, Unknown=2, NotChecked=0, Total=552 [2024-11-08 18:12:16,488 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:16,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 109 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 18:12:16,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 18:12:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-08 18:12:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.125) internal successors, (36), 34 states have internal predecessors, (36), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-08 18:12:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2024-11-08 18:12:16,514 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 19 [2024-11-08 18:12:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:16,514 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2024-11-08 18:12:16,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:12:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2024-11-08 18:12:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 18:12:16,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:16,516 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:16,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:12:16,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:16,721 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:16,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:16,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1338289088, now seen corresponding path program 1 times [2024-11-08 18:12:16,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:16,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748354195] [2024-11-08 18:12:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:16,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:12:16,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40920043] [2024-11-08 18:12:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:16,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:16,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:16,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:16,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:12:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:17,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-08 18:12:17,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:17,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 18:12:17,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:12:17,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 18:12:17,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:12:17,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:12:17,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:12:18,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:12:18,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 78 [2024-11-08 18:12:18,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 42 [2024-11-08 18:12:18,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:12:18,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 70 [2024-11-08 18:12:18,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:12:18,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 51 [2024-11-08 18:12:18,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2024-11-08 18:12:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:12:23,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:12:41,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:41,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748354195] [2024-11-08 18:12:41,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 18:12:41,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40920043] [2024-11-08 18:12:41,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40920043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:41,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:12:41,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 21 [2024-11-08 18:12:41,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41229011] [2024-11-08 18:12:41,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:41,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:12:41,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:41,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:12:41,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=352, Unknown=2, NotChecked=0, Total=420 [2024-11-08 18:12:41,963 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 18:12:47,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:12:51,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:12:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:52,625 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-11-08 18:12:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:12:52,626 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2024-11-08 18:12:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:52,627 INFO L225 Difference]: With dead ends: 60 [2024-11-08 18:12:52,627 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 18:12:52,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=164, Invalid=890, Unknown=2, NotChecked=0, Total=1056 [2024-11-08 18:12:52,635 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:52,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 60 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 175 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2024-11-08 18:12:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 18:12:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-08 18:12:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-08 18:12:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-08 18:12:52,680 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 19 [2024-11-08 18:12:52,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:52,681 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-08 18:12:52,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 18:12:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-08 18:12:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 18:12:52,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:52,682 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 18:12:52,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:12:52,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:52,883 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:52,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash 901607885, now seen corresponding path program 2 times [2024-11-08 18:12:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:52,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708402714] [2024-11-08 18:12:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:12:53,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651200225] [2024-11-08 18:12:53,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:12:53,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:53,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:53,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:53,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:12:56,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:12:56,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:12:56,650 WARN L253 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 220 conjuncts are in the unsatisfiable core [2024-11-08 18:12:56,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:56,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:12:56,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 18:12:56,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:12:56,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:12:56,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 18:12:56,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:12:57,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-08 18:12:57,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 18:12:57,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 18:13:16,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-08 18:13:16,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2024-11-08 18:13:25,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 53 [2024-11-08 18:13:25,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28 [2024-11-08 18:13:25,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-08 18:13:25,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-11-08 18:13:25,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-08 18:13:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:25,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:14:17,088 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int#1| c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset)) (.cse0 (select (select |c_#memory_int#3| c_func_to_recursive_line_30_to_38_0_~a.base) c_func_to_recursive_line_30_to_38_0_~a.offset)) (.cse2 (select (select |c_#memory_int#4| c_func_to_recursive_line_30_to_38_0_~az.base) c_func_to_recursive_line_30_to_38_0_~az.offset)) (.cse4 (select (select |c_#memory_int#6| c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset)) (.cse3 (select (select |c_#memory_int#7| c_func_to_recursive_line_30_to_38_0_~y.base) c_func_to_recursive_line_30_to_38_0_~y.offset))) (or (not (= (mod (+ .cse0 (* 18446744073709551615 .cse1) (* 18446744073709551615 .cse2 .cse3) (* .cse1 .cse4)) 18446744073709551616) 0)) (= (mod (+ (* 18446744073709551615 .cse1 .cse4) (* .cse1 .cse4 .cse4) (* .cse0 .cse4) (* 18446744073709551615 .cse2 .cse4 .cse3)) 18446744073709551616) 0))) is different from true [2024-11-08 18:14:29,337 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int#7| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|)) (.cse2 (select (select |c_#memory_int#4| |c_func_to_recursive_line_30_to_38_0_#in~az.base|) |c_func_to_recursive_line_30_to_38_0_#in~az.offset|)) (.cse0 (select (select |c_#memory_int#6| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)) (.cse3 (select (select |c_#memory_int#1| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|)) (.cse4 (select (select |c_#memory_int#3| |c_func_to_recursive_line_30_to_38_0_#in~a.base|) |c_func_to_recursive_line_30_to_38_0_#in~a.offset|))) (or (= (mod (+ (* .cse0 18446744073709551615 .cse1 .cse2) (* .cse0 18446744073709551615 .cse3) (* .cse0 .cse0 .cse3) (* .cse0 .cse4)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 .cse3) (* 18446744073709551615 .cse1 .cse2) (* .cse0 .cse3) .cse4) 18446744073709551616) 0)))) is different from true [2024-11-08 18:14:49,870 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int#1| c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset)) (.cse4 (select (select |c_#memory_int#3| c_func_to_recursive_line_30_to_38_0_~a.base) c_func_to_recursive_line_30_to_38_0_~a.offset)) (.cse2 (select (select |c_#memory_int#4| c_func_to_recursive_line_30_to_38_0_~az.base) c_func_to_recursive_line_30_to_38_0_~az.offset)) (.cse1 (select (select |c_#memory_int#6| c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset)) (.cse3 (select (select |c_#memory_int#7| c_func_to_recursive_line_30_to_38_0_~y.base) c_func_to_recursive_line_30_to_38_0_~y.offset))) (or (= (mod (+ (* .cse0 .cse1 .cse1 .cse1) (* 18446744073709551615 .cse0 .cse1 .cse1) (* 18446744073709551615 .cse2 .cse1 .cse1 .cse3) (* .cse4 .cse1 .cse1)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 .cse0 .cse1) (* .cse0 .cse1 .cse1) (* .cse4 .cse1) (* 18446744073709551615 .cse2 .cse1 .cse3)) 18446744073709551616) 0)))) is different from false [2024-11-08 18:14:53,882 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int#1| c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset)) (.cse4 (select (select |c_#memory_int#3| c_func_to_recursive_line_30_to_38_0_~a.base) c_func_to_recursive_line_30_to_38_0_~a.offset)) (.cse2 (select (select |c_#memory_int#4| c_func_to_recursive_line_30_to_38_0_~az.base) c_func_to_recursive_line_30_to_38_0_~az.offset)) (.cse1 (select (select |c_#memory_int#6| c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset)) (.cse3 (select (select |c_#memory_int#7| c_func_to_recursive_line_30_to_38_0_~y.base) c_func_to_recursive_line_30_to_38_0_~y.offset))) (or (= (mod (+ (* .cse0 .cse1 .cse1 .cse1) (* 18446744073709551615 .cse0 .cse1 .cse1) (* 18446744073709551615 .cse2 .cse1 .cse1 .cse3) (* .cse4 .cse1 .cse1)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 .cse0 .cse1) (* .cse0 .cse1 .cse1) (* .cse4 .cse1) (* 18446744073709551615 .cse2 .cse1 .cse3)) 18446744073709551616) 0)))) is different from true [2024-11-08 18:14:59,039 WARN L286 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 18:15:04,051 WARN L286 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 18:15:20,928 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 18:15:38,295 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_int#3| |c_func_to_recursive_line_30_to_38_0_#in~a.base|) |c_func_to_recursive_line_30_to_38_0_#in~a.offset|)) (.cse1 (select (select |c_#memory_int#7| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|)) (.cse2 (select (select |c_#memory_int#4| |c_func_to_recursive_line_30_to_38_0_#in~az.base|) |c_func_to_recursive_line_30_to_38_0_#in~az.offset|)) (.cse0 (select (select |c_#memory_int#6| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)) (.cse3 (select (select |c_#memory_int#1| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|))) (or (not (= (mod (+ (* .cse0 18446744073709551615 .cse1 .cse2) (* .cse0 18446744073709551615 .cse3) (* .cse0 .cse0 .cse3) (* .cse0 .cse4)) 18446744073709551616) 0)) (= (mod (+ (* .cse0 .cse0 .cse4) (* .cse0 .cse0 18446744073709551615 .cse1 .cse2) (* .cse0 .cse0 18446744073709551615 .cse3) (* .cse0 .cse0 .cse0 .cse3)) 18446744073709551616) 0))) is different from true [2024-11-08 18:15:43,634 WARN L286 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 18:15:52,030 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_int#3| |c_ULTIMATE.start_main_~#a~0#1.base|) |c_ULTIMATE.start_main_~#a~0#1.offset|)) (.cse0 (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#x~0#1.base|) |c_ULTIMATE.start_main_~#x~0#1.offset|)) (.cse2 (select (select |c_#memory_int#4| |c_ULTIMATE.start_main_~#az~0#1.base|) |c_ULTIMATE.start_main_~#az~0#1.offset|)) (.cse1 (select (select |c_#memory_int#6| |c_ULTIMATE.start_main_~#z~0#1.base|) |c_ULTIMATE.start_main_~#z~0#1.offset|)) (.cse3 (select (select |c_#memory_int#7| |c_ULTIMATE.start_main_~#y~0#1.base|) |c_ULTIMATE.start_main_~#y~0#1.offset|))) (or (= (mod (+ (* 18446744073709551615 .cse0 .cse1 .cse1) (* .cse0 .cse1 .cse1 .cse1) (* 18446744073709551615 .cse2 .cse1 .cse1 .cse3) (* .cse4 .cse1 .cse1)) 18446744073709551616) 0) (not (= (mod (+ (* .cse4 .cse1) (* 18446744073709551615 .cse0 .cse1) (* .cse0 .cse1 .cse1) (* 18446744073709551615 .cse2 .cse1 .cse3)) 18446744073709551616) 0)))) is different from true [2024-11-08 18:15:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 11 not checked. [2024-11-08 18:15:52,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:15:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708402714] [2024-11-08 18:15:52,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 18:15:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651200225] [2024-11-08 18:15:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651200225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:15:52,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:15:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 29 [2024-11-08 18:15:52,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058096614] [2024-11-08 18:15:52,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:15:52,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 18:15:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:15:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 18:15:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=465, Unknown=19, NotChecked=240, Total=812 [2024-11-08 18:15:52,046 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 29 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 21 states have internal predecessors, (38), 12 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 18:15:56,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:16:00,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:16:13,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:16:31,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-08 18:16:45,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:16:49,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-08 18:17:01,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:17:06,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:17:10,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:17:34,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:17:38,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:17:42,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:04,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:08,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:12,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:16,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:20,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:18:24,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:28,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:32,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:36,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:40,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:44,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:18:48,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:52,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:18:56,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:19:00,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:19:04,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:19:08,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:19:12,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:19:16,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 18:19:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:19:16,751 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2024-11-08 18:19:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 18:19:16,753 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 21 states have internal predecessors, (38), 12 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2024-11-08 18:19:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:19:16,754 INFO L225 Difference]: With dead ends: 68 [2024-11-08 18:19:16,754 INFO L226 Difference]: Without dead ends: 66 [2024-11-08 18:19:16,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 165.5s TimeCoverageRelationStatistics Valid=221, Invalid=1172, Unknown=33, NotChecked=380, Total=1806 [2024-11-08 18:19:16,756 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 15 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 129.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:19:16,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 160 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 336 Invalid, 31 Unknown, 341 Unchecked, 129.7s Time] [2024-11-08 18:19:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-08 18:19:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-08 18:19:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 46 states have internal predecessors, (47), 11 states have call successors, (11), 9 states have call predecessors, (11), 11 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-08 18:19:16,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2024-11-08 18:19:16,789 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 29 [2024-11-08 18:19:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:19:16,789 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2024-11-08 18:19:16,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 21 states have internal predecessors, (38), 12 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 18:19:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2024-11-08 18:19:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 18:19:16,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:19:16,791 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:19:16,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:19:16,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:16,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:19:16,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:19:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -531648516, now seen corresponding path program 1 times [2024-11-08 18:19:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:19:16,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134325710] [2024-11-08 18:19:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:19:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:19:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769910396] [2024-11-08 18:19:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:19:17,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:19:17,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:19:17,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:19:17,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:19:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:19:17,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-11-08 18:19:17,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:19:17,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:19:17,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:19:17,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-08 18:19:17,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:19:17,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 18:19:17,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:19:23,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 18:19:23,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-08 18:19:28,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:19:28,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 78 [2024-11-08 18:19:28,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2024-11-08 18:19:28,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:19:28,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 76 [2024-11-08 18:19:28,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:19:28,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2024-11-08 18:19:28,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2024-11-08 18:19:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 20 refuted. 2 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:19:33,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:20:07,851 WARN L286 SmtUtils]: Spent 26.03s on a formula simplification that was a NOOP. DAG size: 124 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-08 18:20:10,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:20:10,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 100 [2024-11-08 18:20:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134325710] [2024-11-08 18:20:46,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 18:20:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769910396] [2024-11-08 18:20:46,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769910396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:46,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:20:46,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-08 18:20:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580050471] [2024-11-08 18:20:46,686 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 18:20:46,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:20:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:46,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:20:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=424, Unknown=10, NotChecked=0, Total=506 [2024-11-08 18:20:46,687 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 19 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 18:20:52,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 18:20:55,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:20:55,301 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2024-11-08 18:20:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:20:55,302 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2024-11-08 18:20:55,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:20:55,304 INFO L225 Difference]: With dead ends: 76 [2024-11-08 18:20:55,304 INFO L226 Difference]: Without dead ends: 64 [2024-11-08 18:20:55,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 54.9s TimeCoverageRelationStatistics Valid=157, Invalid=889, Unknown=10, NotChecked=0, Total=1056 [2024-11-08 18:20:55,307 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:20:55,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 87 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 244 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2024-11-08 18:20:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-08 18:20:55,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-08 18:20:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 44 states have internal predecessors, (45), 11 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-08 18:20:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2024-11-08 18:20:55,356 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 43 [2024-11-08 18:20:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:20:55,356 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2024-11-08 18:20:55,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 18:20:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2024-11-08 18:20:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 18:20:55,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:20:55,358 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-08 18:20:55,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:20:55,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:55,559 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:20:55,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash -88101829, now seen corresponding path program 3 times [2024-11-08 18:20:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:55,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324403374] [2024-11-08 18:20:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:55,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 18:20:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232220197] [2024-11-08 18:20:55,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:20:55,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:55,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:55,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:55,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0bc19b-fe13-44cb-b44a-fd58439462a7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process