./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya --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 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:20:41,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:20:41,302 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:20:41,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:20:41,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:20:41,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:20:41,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:20:41,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:20:41,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:20:41,335 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:20:41,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:20:41,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:20:41,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:20:41,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:20:41,337 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:20:41,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:20:41,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:20:41,339 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:20:41,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:20:41,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:20:41,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:20:41,341 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:20:41,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:20:41,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:20:41,343 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:20:41,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:20:41,343 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:20:41,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:20:41,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:20:41,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:20:41,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:20:41,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:20:41,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:20:41,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:20:41,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:20:41,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:20:41,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:20:41,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:20:41,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:20:41,348 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:20:41,348 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:20:41,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:20:41,348 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_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2023-11-29 02:20:41,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:20:41,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:20:41,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:20:41,618 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:20:41,618 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:20:41,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i [2023-11-29 02:20:44,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:20:44,633 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:20:44,634 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i [2023-11-29 02:20:44,653 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/data/2c931b9c8/cacc5275736b4c579bd81fcc0d8935c8/FLAG02f9af57b [2023-11-29 02:20:44,669 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/data/2c931b9c8/cacc5275736b4c579bd81fcc0d8935c8 [2023-11-29 02:20:44,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:20:44,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:20:44,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:20:44,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:20:44,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:20:44,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:20:44" (1/1) ... [2023-11-29 02:20:44,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751448f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:44, skipping insertion in model container [2023-11-29 02:20:44,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:20:44" (1/1) ... [2023-11-29 02:20:44,749 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:20:45,165 WARN L240 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_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i[33519,33532] [2023-11-29 02:20:45,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:20:45,293 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:20:45,325 WARN L240 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_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i[33519,33532] [2023-11-29 02:20:45,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:20:45,425 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:20:45,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45 WrapperNode [2023-11-29 02:20:45,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:20:45,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:20:45,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:20:45,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:20:45,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,533 INFO L138 Inliner]: procedures = 177, calls = 390, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1622 [2023-11-29 02:20:45,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:20:45,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:20:45,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:20:45,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:20:45,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,706 INFO L175 MemorySlicer]: Split 367 memory accesses to 4 slices as follows [2, 5, 5, 355]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 92 writes are split as follows [0, 1, 1, 90]. [2023-11-29 02:20:45,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:20:45,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:20:45,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:20:45,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:20:45,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (1/1) ... [2023-11-29 02:20:45,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:20:45,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:20:45,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:20:45,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:20:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:20:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:20:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:20:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:20:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:20:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:20:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:20:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:20:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 02:20:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 02:20:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 02:20:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 02:20:45,863 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 02:20:45,864 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 02:20:45,864 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 02:20:45,864 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 02:20:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:20:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:20:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:20:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 02:20:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 02:20:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 02:20:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 02:20:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 02:20:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 02:20:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 02:20:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 02:20:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:20:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:20:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:20:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:20:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:20:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:20:45,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:20:46,141 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:20:46,143 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:20:47,683 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:20:47,726 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:20:47,726 INFO L309 CfgBuilder]: Removed 69 assume(true) statements. [2023-11-29 02:20:47,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:20:47 BoogieIcfgContainer [2023-11-29 02:20:47,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:20:47,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:20:47,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:20:47,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:20:47,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:20:44" (1/3) ... [2023-11-29 02:20:47,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1f79e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:20:47, skipping insertion in model container [2023-11-29 02:20:47,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:45" (2/3) ... [2023-11-29 02:20:47,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1f79e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:20:47, skipping insertion in model container [2023-11-29 02:20:47,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:20:47" (3/3) ... [2023-11-29 02:20:47,736 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test4-2.i [2023-11-29 02:20:47,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:20:47,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:20:47,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:20:47,825 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@18bc92ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:20:47,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:20:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 380 states have (on average 1.694736842105263) internal successors, (644), 381 states have internal predecessors, (644), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 02:20:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 02:20:47,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:47,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:47,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:47,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:47,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1393739176, now seen corresponding path program 1 times [2023-11-29 02:20:47,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:47,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029090546] [2023-11-29 02:20:47,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:47,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:20:47,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:47,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029090546] [2023-11-29 02:20:47,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029090546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:47,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:47,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:20:47,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821070856] [2023-11-29 02:20:47,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:48,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:20:48,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:48,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:20:48,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:20:48,035 INFO L87 Difference]: Start difference. First operand has 389 states, 380 states have (on average 1.694736842105263) internal successors, (644), 381 states have internal predecessors, (644), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:48,111 INFO L93 Difference]: Finished difference Result 776 states and 1309 transitions. [2023-11-29 02:20:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:20:48,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 02:20:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:48,125 INFO L225 Difference]: With dead ends: 776 [2023-11-29 02:20:48,125 INFO L226 Difference]: Without dead ends: 353 [2023-11-29 02:20:48,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:20:48,134 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:48,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 574 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:20:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-29 02:20:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2023-11-29 02:20:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 345 states have (on average 1.4985507246376812) internal successors, (517), 345 states have internal predecessors, (517), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 02:20:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 529 transitions. [2023-11-29 02:20:48,197 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 529 transitions. Word has length 9 [2023-11-29 02:20:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:48,197 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 529 transitions. [2023-11-29 02:20:48,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 529 transitions. [2023-11-29 02:20:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 02:20:48,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:48,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:20:48,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:48,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1481488355, now seen corresponding path program 1 times [2023-11-29 02:20:48,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:48,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108772310] [2023-11-29 02:20:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:48,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:20:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:48,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108772310] [2023-11-29 02:20:48,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108772310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:48,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:20:48,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798703942] [2023-11-29 02:20:48,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:48,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:20:48,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:48,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:20:48,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:20:48,354 INFO L87 Difference]: Start difference. First operand 353 states and 529 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:49,007 INFO L93 Difference]: Finished difference Result 986 states and 1493 transitions. [2023-11-29 02:20:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:20:49,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 02:20:49,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:49,013 INFO L225 Difference]: With dead ends: 986 [2023-11-29 02:20:49,014 INFO L226 Difference]: Without dead ends: 633 [2023-11-29 02:20:49,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:20:49,016 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 434 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:49,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1497 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:20:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-11-29 02:20:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2023-11-29 02:20:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 622 states have (on average 1.517684887459807) internal successors, (944), 622 states have internal predecessors, (944), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:20:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2023-11-29 02:20:49,059 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 9 [2023-11-29 02:20:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:49,059 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2023-11-29 02:20:49,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2023-11-29 02:20:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 02:20:49,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:49,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:49,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:20:49,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:49,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1886158766, now seen corresponding path program 1 times [2023-11-29 02:20:49,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:49,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8530178] [2023-11-29 02:20:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:49,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:49,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:20:49,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111653983] [2023-11-29 02:20:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:49,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:49,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:20:49,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:20:49,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:20:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:49,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:20:49,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:20:49,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:20:49,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:49,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8530178] [2023-11-29 02:20:49,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:20:49,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111653983] [2023-11-29 02:20:49,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111653983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:49,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:49,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:20:49,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762540179] [2023-11-29 02:20:49,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:49,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:20:49,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:20:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:20:49,768 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:49,880 INFO L93 Difference]: Finished difference Result 1256 states and 1904 transitions. [2023-11-29 02:20:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:20:49,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 02:20:49,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:49,886 INFO L225 Difference]: With dead ends: 1256 [2023-11-29 02:20:49,886 INFO L226 Difference]: Without dead ends: 675 [2023-11-29 02:20:49,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:20:49,889 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 10 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:49,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 998 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:20:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-29 02:20:49,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 673. [2023-11-29 02:20:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 662 states have (on average 1.486404833836858) internal successors, (984), 662 states have internal predecessors, (984), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:20:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1002 transitions. [2023-11-29 02:20:49,920 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1002 transitions. Word has length 168 [2023-11-29 02:20:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:49,921 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1002 transitions. [2023-11-29 02:20:49,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1002 transitions. [2023-11-29 02:20:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 02:20:49,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:49,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:49,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:20:50,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:50,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:50,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:50,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1445633458, now seen corresponding path program 1 times [2023-11-29 02:20:50,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:50,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566335] [2023-11-29 02:20:50,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:50,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:50,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:20:50,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068023287] [2023-11-29 02:20:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:50,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:50,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:20:50,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:20:50,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:20:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:50,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:20:50,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:20:50,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:20:50,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:50,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566335] [2023-11-29 02:20:50,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:20:50,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068023287] [2023-11-29 02:20:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068023287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:50,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:20:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201464906] [2023-11-29 02:20:50,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:50,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:20:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:20:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:20:50,825 INFO L87 Difference]: Start difference. First operand 673 states and 1002 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:50,923 INFO L93 Difference]: Finished difference Result 1148 states and 1709 transitions. [2023-11-29 02:20:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:20:50,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 02:20:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:50,929 INFO L225 Difference]: With dead ends: 1148 [2023-11-29 02:20:50,929 INFO L226 Difference]: Without dead ends: 715 [2023-11-29 02:20:50,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:20:50,932 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 9 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:50,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 998 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:20:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-29 02:20:50,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 713. [2023-11-29 02:20:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 702 states have (on average 1.4586894586894588) internal successors, (1024), 702 states have internal predecessors, (1024), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:20:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1042 transitions. [2023-11-29 02:20:50,963 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1042 transitions. Word has length 168 [2023-11-29 02:20:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:50,963 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1042 transitions. [2023-11-29 02:20:50,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:50,964 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1042 transitions. [2023-11-29 02:20:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 02:20:50,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:50,967 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:50,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 02:20:51,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:51,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:51,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1205393712, now seen corresponding path program 1 times [2023-11-29 02:20:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:51,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357928139] [2023-11-29 02:20:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:51,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:20:51,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151235414] [2023-11-29 02:20:51,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:51,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:51,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:20:51,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:20:51,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:20:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:51,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:20:51,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:20:51,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:20:51,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357928139] [2023-11-29 02:20:51,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:20:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151235414] [2023-11-29 02:20:51,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151235414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:51,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:51,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:20:51,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697252151] [2023-11-29 02:20:51,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:51,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:20:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:20:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:20:51,822 INFO L87 Difference]: Start difference. First operand 713 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:51,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:51,924 INFO L93 Difference]: Finished difference Result 1142 states and 1674 transitions. [2023-11-29 02:20:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:20:51,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 02:20:51,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:51,929 INFO L225 Difference]: With dead ends: 1142 [2023-11-29 02:20:51,929 INFO L226 Difference]: Without dead ends: 687 [2023-11-29 02:20:51,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:20:51,931 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 165 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:51,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1345 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:20:51,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-29 02:20:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 685. [2023-11-29 02:20:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 674 states have (on average 1.456973293768546) internal successors, (982), 674 states have internal predecessors, (982), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:20:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1000 transitions. [2023-11-29 02:20:51,958 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1000 transitions. Word has length 168 [2023-11-29 02:20:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:51,959 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1000 transitions. [2023-11-29 02:20:51,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1000 transitions. [2023-11-29 02:20:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 02:20:51,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:51,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:51,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 02:20:52,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:52,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:52,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash 469060926, now seen corresponding path program 1 times [2023-11-29 02:20:52,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:52,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358878905] [2023-11-29 02:20:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:52,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:52,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:20:52,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278469652] [2023-11-29 02:20:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:52,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:52,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:20:52,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:20:52,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:20:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:52,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:20:52,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:20:52,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:20:52,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:52,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358878905] [2023-11-29 02:20:52,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:20:52,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278469652] [2023-11-29 02:20:52,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278469652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:52,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:52,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:20:52,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484098500] [2023-11-29 02:20:52,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:52,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:20:52,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:20:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:20:52,770 INFO L87 Difference]: Start difference. First operand 685 states and 1000 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:52,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:52,884 INFO L93 Difference]: Finished difference Result 1274 states and 1865 transitions. [2023-11-29 02:20:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:20:52,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 02:20:52,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:52,890 INFO L225 Difference]: With dead ends: 1274 [2023-11-29 02:20:52,890 INFO L226 Difference]: Without dead ends: 659 [2023-11-29 02:20:52,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:20:52,892 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 165 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:52,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1324 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:20:52,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-29 02:20:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2023-11-29 02:20:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 646 states have (on average 1.4551083591331269) internal successors, (940), 646 states have internal predecessors, (940), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:20:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 958 transitions. [2023-11-29 02:20:52,918 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 958 transitions. Word has length 168 [2023-11-29 02:20:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:52,919 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 958 transitions. [2023-11-29 02:20:52,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 958 transitions. [2023-11-29 02:20:52,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 02:20:52,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:52,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:52,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 02:20:53,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 02:20:53,131 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:53,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1973142160, now seen corresponding path program 1 times [2023-11-29 02:20:53,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:53,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815655308] [2023-11-29 02:20:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:53,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:53,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:20:53,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407175352] [2023-11-29 02:20:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:53,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:20:53,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:20:53,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:20:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:53,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:20:53,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:20:54,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:20:54,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815655308] [2023-11-29 02:20:54,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:20:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407175352] [2023-11-29 02:20:54,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407175352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:54,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:54,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:20:54,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318310519] [2023-11-29 02:20:54,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:54,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:20:54,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:20:54,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:20:54,068 INFO L87 Difference]: Start difference. First operand 657 states and 958 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:54,161 INFO L93 Difference]: Finished difference Result 1183 states and 1723 transitions. [2023-11-29 02:20:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:20:54,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 02:20:54,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:54,168 INFO L225 Difference]: With dead ends: 1183 [2023-11-29 02:20:54,168 INFO L226 Difference]: Without dead ends: 655 [2023-11-29 02:20:54,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:20:54,170 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 123 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:54,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1007 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:20:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-29 02:20:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2023-11-29 02:20:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 644 states have (on average 1.454968944099379) internal successors, (937), 644 states have internal predecessors, (937), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:20:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 955 transitions. [2023-11-29 02:20:54,188 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 955 transitions. Word has length 168 [2023-11-29 02:20:54,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:54,188 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 955 transitions. [2023-11-29 02:20:54,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:20:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 955 transitions. [2023-11-29 02:20:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-29 02:20:54,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:54,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:54,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:20:54,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:54,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:54,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1529514294, now seen corresponding path program 1 times [2023-11-29 02:20:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:54,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131663633] [2023-11-29 02:20:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:54,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:20:54,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699229201] [2023-11-29 02:20:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:54,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:54,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:20:54,480 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:20:54,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:20:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:55,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 02:20:55,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:55,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 02:20:55,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:20:55,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 26 [2023-11-29 02:20:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:20:55,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:20:55,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131663633] [2023-11-29 02:20:55,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:20:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699229201] [2023-11-29 02:20:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699229201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:55,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:55,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 02:20:55,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598094888] [2023-11-29 02:20:55,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:55,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:20:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:55,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:20:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:20:55,764 INFO L87 Difference]: Start difference. First operand 655 states and 955 transitions. Second operand has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:20:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:59,635 INFO L93 Difference]: Finished difference Result 1328 states and 1921 transitions. [2023-11-29 02:20:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:20:59,636 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-11-29 02:20:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:59,641 INFO L225 Difference]: With dead ends: 1328 [2023-11-29 02:20:59,641 INFO L226 Difference]: Without dead ends: 754 [2023-11-29 02:20:59,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:20:59,643 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1274 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:59,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 3192 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 02:20:59,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-29 02:20:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 687. [2023-11-29 02:20:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 676 states have (on average 1.4408284023668638) internal successors, (974), 676 states have internal predecessors, (974), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:20:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 992 transitions. [2023-11-29 02:20:59,679 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 992 transitions. Word has length 181 [2023-11-29 02:20:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:59,680 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 992 transitions. [2023-11-29 02:20:59,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:20:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 992 transitions. [2023-11-29 02:20:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-29 02:20:59,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:59,684 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:59,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:20:59,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:59,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:59,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash 104870842, now seen corresponding path program 1 times [2023-11-29 02:20:59,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:59,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844643585] [2023-11-29 02:20:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:59,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:20:59,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033145698] [2023-11-29 02:20:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:59,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:59,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:20:59,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:20:59,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:21:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:00,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:21:00,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:21:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:21:00,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:21:00,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:00,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844643585] [2023-11-29 02:21:00,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:21:00,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033145698] [2023-11-29 02:21:00,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033145698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:00,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:00,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:21:00,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769726741] [2023-11-29 02:21:00,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:00,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:21:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:21:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:21:00,527 INFO L87 Difference]: Start difference. First operand 687 states and 992 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:21:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:21:00,678 INFO L93 Difference]: Finished difference Result 1461 states and 2146 transitions. [2023-11-29 02:21:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:21:00,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-11-29 02:21:00,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:21:00,685 INFO L225 Difference]: With dead ends: 1461 [2023-11-29 02:21:00,685 INFO L226 Difference]: Without dead ends: 875 [2023-11-29 02:21:00,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:21:00,687 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 140 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:21:00,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1958 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:21:00,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-29 02:21:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 710. [2023-11-29 02:21:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 699 states have (on average 1.4248927038626609) internal successors, (996), 699 states have internal predecessors, (996), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:21:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1014 transitions. [2023-11-29 02:21:00,720 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1014 transitions. Word has length 181 [2023-11-29 02:21:00,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:21:00,720 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1014 transitions. [2023-11-29 02:21:00,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:21:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1014 transitions. [2023-11-29 02:21:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-29 02:21:00,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:21:00,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:00,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:21:00,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:21:00,925 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:21:00,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash 981091559, now seen corresponding path program 1 times [2023-11-29 02:21:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125946153] [2023-11-29 02:21:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:01,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:21:01,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320135481] [2023-11-29 02:21:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:01,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:21:01,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:21:01,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:21:01,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:21:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:01,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 02:21:01,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:21:01,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:21:01,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 22 [2023-11-29 02:21:10,464 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:21:22,654 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:21:30,687 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:21:38,962 WARN L293 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:21:44,478 WARN L293 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:21:52,518 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:21:59,274 WARN L293 SmtUtils]: Spent 6.75s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:22:11,359 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:22:19,401 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:22:27,481 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:22:32,566 WARN L293 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 8 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:22:42,037 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:22:58,176 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:23:06,213 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:23:14,237 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:23:18,271 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_y_26 Int) (v_z_29 Int) (v_y_29 Int)) (let ((.cse0 (* v_z_29 4294967295)) (.cse2 (* v_y_26 4294967296)) (.cse1 (* v_y_29 4294967296)) (.cse3 (mod (+ (* 4294967295 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4276993779) 4294967296))) (and (= (+ (mod (+ 2690382803 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4294967296) .cse0 .cse1) 4294967296) (<= (+ .cse2 |c_ULTIMATE.start_main_~_ha_hashv~0#1| .cse0 .cse1) 8553987558) (= (* .cse3 256) (+ 1099511627776 .cse2 (* v_z_29 4294967039) .cse1)) (<= 4294967296 (+ .cse3 v_z_29)) (<= v_z_29 4294967295) (<= (div (+ (div (+ (- 255) (div (+ 8553987302 (* v_z_29 (- 4294967295)) (* (- 1) |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) 256)) 256) (- 255)) 256) (+ 254 (* v_y_26 256) (* v_y_29 256)))))) is different from false [2023-11-29 02:23:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:23:18,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:23:18,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:18,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125946153] [2023-11-29 02:23:18,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:23:18,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320135481] [2023-11-29 02:23:18,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320135481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:18,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:23:18,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 02:23:18,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26238080] [2023-11-29 02:23:18,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:18,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:23:18,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:18,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:23:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=108, Unknown=1, NotChecked=20, Total=156 [2023-11-29 02:23:18,366 INFO L87 Difference]: Start difference. First operand 710 states and 1014 transitions. Second operand has 13 states, 13 states have (on average 12.923076923076923) internal successors, (168), 13 states have internal predecessors, (168), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:23:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:23:21,157 INFO L93 Difference]: Finished difference Result 1348 states and 1937 transitions. [2023-11-29 02:23:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:23:21,158 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.923076923076923) internal successors, (168), 13 states have internal predecessors, (168), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 182 [2023-11-29 02:23:21,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:23:21,161 INFO L225 Difference]: With dead ends: 1348 [2023-11-29 02:23:21,161 INFO L226 Difference]: Without dead ends: 751 [2023-11-29 02:23:21,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=39, Invalid=174, Unknown=1, NotChecked=26, Total=240 [2023-11-29 02:23:21,163 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 28 mSDsluCounter, 3596 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4093 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:23:21,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 4093 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1569 Invalid, 0 Unknown, 158 Unchecked, 2.6s Time] [2023-11-29 02:23:21,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2023-11-29 02:23:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 741. [2023-11-29 02:23:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 730 states have (on average 1.4136986301369863) internal successors, (1032), 730 states have internal predecessors, (1032), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:23:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1050 transitions. [2023-11-29 02:23:21,190 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1050 transitions. Word has length 182 [2023-11-29 02:23:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:23:21,190 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1050 transitions. [2023-11-29 02:23:21,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.923076923076923) internal successors, (168), 13 states have internal predecessors, (168), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:23:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1050 transitions. [2023-11-29 02:23:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 02:23:21,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:23:21,192 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:21,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:23:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:23:21,395 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:23:21,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash 233589743, now seen corresponding path program 1 times [2023-11-29 02:23:21,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:21,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239463553] [2023-11-29 02:23:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:21,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:23:21,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389458275] [2023-11-29 02:23:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:21,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:23:21,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:23:21,487 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:23:21,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:23:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:22,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:23:22,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:23:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 02:23:22,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:23:22,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:22,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239463553] [2023-11-29 02:23:22,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:23:22,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389458275] [2023-11-29 02:23:22,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389458275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:22,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:23:22,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:23:22,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698721409] [2023-11-29 02:23:22,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:22,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:23:22,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:22,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:23:22,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:23:22,384 INFO L87 Difference]: Start difference. First operand 741 states and 1050 transitions. Second operand has 5 states, 4 states have (on average 42.75) internal successors, (171), 5 states have internal predecessors, (171), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:23:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:23:22,512 INFO L93 Difference]: Finished difference Result 1376 states and 1962 transitions. [2023-11-29 02:23:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:23:22,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 42.75) internal successors, (171), 5 states have internal predecessors, (171), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 183 [2023-11-29 02:23:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:23:22,520 INFO L225 Difference]: With dead ends: 1376 [2023-11-29 02:23:22,520 INFO L226 Difference]: Without dead ends: 801 [2023-11-29 02:23:22,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:23:22,522 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 482 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:23:22,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 2015 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:23:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2023-11-29 02:23:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 743. [2023-11-29 02:23:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 731 states have (on average 1.414500683994528) internal successors, (1034), 732 states have internal predecessors, (1034), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 02:23:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1055 transitions. [2023-11-29 02:23:22,560 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1055 transitions. Word has length 183 [2023-11-29 02:23:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:23:22,561 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1055 transitions. [2023-11-29 02:23:22,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 42.75) internal successors, (171), 5 states have internal predecessors, (171), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:23:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1055 transitions. [2023-11-29 02:23:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-29 02:23:22,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:23:22,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:22,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:23:22,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:23:22,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:23:22,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash 186323683, now seen corresponding path program 1 times [2023-11-29 02:23:22,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:22,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062181306] [2023-11-29 02:23:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:22,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:23:22,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096249612] [2023-11-29 02:23:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:22,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:23:22,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:23:22,870 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:23:22,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_707f6dfa-b5c3-4a28-9ab2-7de3221a4092/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:23:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:23,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 251 conjunts are in the unsatisfiable core [2023-11-29 02:23:23,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:23:23,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 02:23:23,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 02:23:24,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2023-11-29 02:23:24,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2023-11-29 02:23:24,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2023-11-29 02:23:24,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 02:23:24,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-29 02:23:24,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-29 02:23:24,519 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-11-29 02:23:24,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-11-29 02:23:24,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 02:23:24,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2023-11-29 02:23:24,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 02:23:24,828 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 02:23:24,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 57 [2023-11-29 02:23:24,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2023-11-29 02:23:24,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 02:23:27,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:23:27,701 INFO L224 Elim1Store]: Index analysis took 102 ms [2023-11-29 02:24:49,486 WARN L293 SmtUtils]: Spent 1.32m on a formula simplification. DAG size of input: 59118 DAG size of output: 1 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 02:24:49,486 INFO L349 Elim1Store]: treesize reduction 1201786, result has 0.0 percent of original size [2023-11-29 02:24:49,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 248 stores, 26 select indices, 26 select index equivalence classes, 2 disjoint index pairs (out of 325 index pairs), introduced 296 new quantified variables, introduced 7067 case distinctions, treesize of input 339021832 treesize of output 70568056 [2023-11-29 02:27:28,005 WARN L293 SmtUtils]: Spent 2.62m on a formula simplification. DAG size of input: 175135 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 02:27:30,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:27:30,428 INFO L224 Elim1Store]: Index analysis took 219 ms [2023-11-29 02:30:00,254 WARN L293 SmtUtils]: Spent 2.46m on a formula simplification. DAG size of input: 70342 DAG size of output: 1 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 02:30:00,254 INFO L349 Elim1Store]: treesize reduction 1416043, result has 0.0 percent of original size [2023-11-29 02:30:00,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 264 stores, 30 select indices, 30 select index equivalence classes, 2 disjoint index pairs (out of 435 index pairs), introduced 319 new quantified variables, introduced 8627 case distinctions, treesize of input 337525947 treesize of output 69456505