./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.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_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/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_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/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_e123f39a-8033-485c-9d74-91f4be8c3e55/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 6698dfe763688c38a478c53cfe3bc6bac092e445bf13ef44be53eb6068218c93 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:48:33,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:48:33,794 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:48:33,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:48:33,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:48:33,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:48:33,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:48:33,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:48:33,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:48:33,826 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:48:33,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:48:33,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:48:33,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:48:33,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:48:33,829 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:48:33,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:48:33,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:48:33,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:48:33,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:48:33,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:48:33,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:48:33,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:48:33,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:48:33,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:48:33,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:48:33,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:48:33,834 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:48:33,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:48:33,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:48:33,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:48:33,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:48:33,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:48:33,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:48:33,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:48:33,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:48:33,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:48:33,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:48:33,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:48:33,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:48:33,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:48:33,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:48:33,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:48:33,840 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_e123f39a-8033-485c-9d74-91f4be8c3e55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6698dfe763688c38a478c53cfe3bc6bac092e445bf13ef44be53eb6068218c93 [2023-11-29 01:48:34,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:48:34,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:48:34,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:48:34,111 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:48:34,112 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:48:34,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i [2023-11-29 01:48:36,863 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:48:37,170 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:48:37,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i [2023-11-29 01:48:37,190 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/data/3435e7ffa/50d36ba8b714446c9022e5e7b453ffac/FLAG1b6730c51 [2023-11-29 01:48:37,203 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/data/3435e7ffa/50d36ba8b714446c9022e5e7b453ffac [2023-11-29 01:48:37,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:48:37,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:48:37,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:48:37,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:48:37,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:48:37,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:48:37" (1/1) ... [2023-11-29 01:48:37,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3ac8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:37, skipping insertion in model container [2023-11-29 01:48:37,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:48:37" (1/1) ... [2023-11-29 01:48:37,280 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:48:37,735 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_e123f39a-8033-485c-9d74-91f4be8c3e55/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[33021,33034] [2023-11-29 01:48:37,971 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_e123f39a-8033-485c-9d74-91f4be8c3e55/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[84583,84596] [2023-11-29 01:48:37,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:48:37,988 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:48:38,020 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_e123f39a-8033-485c-9d74-91f4be8c3e55/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[33021,33034] [2023-11-29 01:48:38,126 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_e123f39a-8033-485c-9d74-91f4be8c3e55/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[84583,84596] [2023-11-29 01:48:38,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:48:38,163 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:48:38,173 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:48:38,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38 WrapperNode [2023-11-29 01:48:38,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:48:38,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:48:38,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:48:38,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:48:38,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,304 INFO L138 Inliner]: procedures = 177, calls = 730, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3187 [2023-11-29 01:48:38,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:48:38,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:48:38,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:48:38,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:48:38,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,389 INFO L175 MemorySlicer]: Split 213 memory accesses to 4 slices as follows [2, 5, 172, 34]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 47 writes are split as follows [0, 1, 42, 4]. [2023-11-29 01:48:38,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:48:38,514 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:48:38,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:48:38,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:48:38,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (1/1) ... [2023-11-29 01:48:38,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:48:38,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:38,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:48:38,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:48:38,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:48:38,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:48:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:48:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:48:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:48:38,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:48:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:48:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:48:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:48:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:48:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 01:48:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 01:48:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 01:48:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 01:48:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 01:48:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 01:48:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 01:48:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 01:48:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:48:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:48:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:48:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:48:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:48:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:48:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:48:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 01:48:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:48:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:48:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:48:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:48:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:48:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:48:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:48:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:48:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:48:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:48:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:48:38,806 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:48:38,809 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:48:41,158 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:48:41,229 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:48:41,229 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-29 01:48:41,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:48:41 BoogieIcfgContainer [2023-11-29 01:48:41,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:48:41,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:48:41,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:48:41,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:48:41,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:48:37" (1/3) ... [2023-11-29 01:48:41,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69245519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:48:41, skipping insertion in model container [2023-11-29 01:48:41,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:38" (2/3) ... [2023-11-29 01:48:41,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69245519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:48:41, skipping insertion in model container [2023-11-29 01:48:41,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:48:41" (3/3) ... [2023-11-29 01:48:41,241 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test9-1.i [2023-11-29 01:48:41,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:48:41,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 01:48:41,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:48:41,364 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;@2bb956cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:48:41,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 01:48:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 1325 states, 817 states have (on average 1.8861689106487147) internal successors, (1541), 1319 states have internal predecessors, (1541), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-29 01:48:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 01:48:41,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:41,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:41,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:41,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:41,390 INFO L85 PathProgramCache]: Analyzing trace with hash 523243056, now seen corresponding path program 1 times [2023-11-29 01:48:41,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:41,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054973953] [2023-11-29 01:48:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:41,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:41,583 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 01:48:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054973953] [2023-11-29 01:48:41,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054973953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:41,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:41,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:48:41,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956924041] [2023-11-29 01:48:41,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:41,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:48:41,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:48:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:48:41,630 INFO L87 Difference]: Start difference. First operand has 1325 states, 817 states have (on average 1.8861689106487147) internal successors, (1541), 1319 states have internal predecessors, (1541), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 01:48:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:41,827 INFO L93 Difference]: Finished difference Result 2649 states and 5593 transitions. [2023-11-29 01:48:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:48:41,830 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-29 01:48:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:41,864 INFO L225 Difference]: With dead ends: 2649 [2023-11-29 01:48:41,865 INFO L226 Difference]: Without dead ends: 1323 [2023-11-29 01:48:41,880 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 01:48:41,883 INFO L413 NwaCegarLoop]: 2483 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:41,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2483 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:48:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2023-11-29 01:48:42,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1323. [2023-11-29 01:48:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 816 states have (on average 1.8125) internal successors, (1479), 1317 states have internal predecessors, (1479), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-29 01:48:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 2485 transitions. [2023-11-29 01:48:42,308 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 2485 transitions. Word has length 8 [2023-11-29 01:48:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:42,309 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 2485 transitions. [2023-11-29 01:48:42,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 01:48:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 2485 transitions. [2023-11-29 01:48:42,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:48:42,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:42,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:42,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:48:42,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:42,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash -328268994, now seen corresponding path program 1 times [2023-11-29 01:48:42,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:42,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404504732] [2023-11-29 01:48:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:42,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:42,679 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 01:48:42,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404504732] [2023-11-29 01:48:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404504732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:42,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:42,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288907036] [2023-11-29 01:48:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:42,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:48:42,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:42,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:48:42,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:48:42,684 INFO L87 Difference]: Start difference. First operand 1323 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 01:48:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:43,697 INFO L93 Difference]: Finished difference Result 3781 states and 7180 transitions. [2023-11-29 01:48:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:48:43,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-29 01:48:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:43,726 INFO L225 Difference]: With dead ends: 3781 [2023-11-29 01:48:43,726 INFO L226 Difference]: Without dead ends: 2635 [2023-11-29 01:48:43,735 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 01:48:43,737 INFO L413 NwaCegarLoop]: 2727 mSDtfsCounter, 1466 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 7413 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:43,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 7413 Invalid, 569 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:48:43,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2023-11-29 01:48:44,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 1325. [2023-11-29 01:48:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 818 states have (on average 1.8105134474327629) internal successors, (1481), 1319 states have internal predecessors, (1481), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-29 01:48:44,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2487 transitions. [2023-11-29 01:48:44,261 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2487 transitions. Word has length 63 [2023-11-29 01:48:44,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:44,261 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 2487 transitions. [2023-11-29 01:48:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 01:48:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2487 transitions. [2023-11-29 01:48:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 01:48:44,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:44,269 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:48:44,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:48:44,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:44,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash -974770798, now seen corresponding path program 1 times [2023-11-29 01:48:44,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:44,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658605587] [2023-11-29 01:48:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:44,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:44,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89278032] [2023-11-29 01:48:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:44,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:44,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:44,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:44,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:48:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:44,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:48:44,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:48:44,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:44,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:44,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658605587] [2023-11-29 01:48:44,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:44,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89278032] [2023-11-29 01:48:44,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89278032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:44,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137584075] [2023-11-29 01:48:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:44,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:44,689 INFO L87 Difference]: Start difference. First operand 1325 states and 2487 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 01:48:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:44,853 INFO L93 Difference]: Finished difference Result 2668 states and 5002 transitions. [2023-11-29 01:48:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:44,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-11-29 01:48:44,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:44,868 INFO L225 Difference]: With dead ends: 2668 [2023-11-29 01:48:44,868 INFO L226 Difference]: Without dead ends: 1346 [2023-11-29 01:48:44,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 01:48:44,877 INFO L413 NwaCegarLoop]: 2462 mSDtfsCounter, 9 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4910 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 01:48:44,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4910 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-11-29 01:48:45,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1345. [2023-11-29 01:48:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 838 states have (on average 1.7911694510739857) internal successors, (1501), 1339 states have internal predecessors, (1501), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-29 01:48:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2507 transitions. [2023-11-29 01:48:45,105 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2507 transitions. Word has length 139 [2023-11-29 01:48:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:45,105 INFO L495 AbstractCegarLoop]: Abstraction has 1345 states and 2507 transitions. [2023-11-29 01:48:45,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 01:48:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2507 transitions. [2023-11-29 01:48:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 01:48:45,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:45,109 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:48:45,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:45,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:45,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:45,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1462817904, now seen corresponding path program 1 times [2023-11-29 01:48:45,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:45,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709115442] [2023-11-29 01:48:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:45,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:45,383 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:45,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70066065] [2023-11-29 01:48:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:45,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:45,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:45,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:45,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:48:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:45,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:48:45,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:48:45,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:45,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:45,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709115442] [2023-11-29 01:48:45,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:45,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70066065] [2023-11-29 01:48:45,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70066065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:45,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:45,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:45,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719209290] [2023-11-29 01:48:45,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:45,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:45,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:45,753 INFO L87 Difference]: Start difference. First operand 1345 states and 2507 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 01:48:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:45,926 INFO L93 Difference]: Finished difference Result 2511 states and 4757 transitions. [2023-11-29 01:48:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:45,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 139 [2023-11-29 01:48:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:45,938 INFO L225 Difference]: With dead ends: 2511 [2023-11-29 01:48:45,938 INFO L226 Difference]: Without dead ends: 1366 [2023-11-29 01:48:45,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 01:48:45,946 INFO L413 NwaCegarLoop]: 2464 mSDtfsCounter, 8 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4912 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 01:48:45,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4912 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:45,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2023-11-29 01:48:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1365. [2023-11-29 01:48:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 858 states have (on average 1.7727272727272727) internal successors, (1521), 1359 states have internal predecessors, (1521), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-29 01:48:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2527 transitions. [2023-11-29 01:48:46,185 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2527 transitions. Word has length 139 [2023-11-29 01:48:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:46,186 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 2527 transitions. [2023-11-29 01:48:46,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 01:48:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2527 transitions. [2023-11-29 01:48:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 01:48:46,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:46,189 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:48:46,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:48:46,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:46,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:46,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:46,395 INFO L85 PathProgramCache]: Analyzing trace with hash -433458606, now seen corresponding path program 1 times [2023-11-29 01:48:46,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:46,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136937210] [2023-11-29 01:48:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:46,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:46,453 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:46,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562785324] [2023-11-29 01:48:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:46,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:46,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:46,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:46,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:48:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:46,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:48:46,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:48:46,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:46,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:46,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136937210] [2023-11-29 01:48:46,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:46,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562785324] [2023-11-29 01:48:46,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562785324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:46,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:46,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:48:46,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251526562] [2023-11-29 01:48:46,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:46,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:48:46,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:48:46,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:48:46,836 INFO L87 Difference]: Start difference. First operand 1365 states and 2527 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 01:48:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:47,013 INFO L93 Difference]: Finished difference Result 2714 states and 5038 transitions. [2023-11-29 01:48:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:48:47,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-11-29 01:48:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:47,026 INFO L225 Difference]: With dead ends: 2714 [2023-11-29 01:48:47,027 INFO L226 Difference]: Without dead ends: 1352 [2023-11-29 01:48:47,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 01:48:47,036 INFO L413 NwaCegarLoop]: 2455 mSDtfsCounter, 165 mSDsluCounter, 4758 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 7213 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 01:48:47,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 7213 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2023-11-29 01:48:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1351. [2023-11-29 01:48:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 844 states have (on average 1.7772511848341233) internal successors, (1500), 1345 states have internal predecessors, (1500), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-29 01:48:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 2506 transitions. [2023-11-29 01:48:47,213 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 2506 transitions. Word has length 139 [2023-11-29 01:48:47,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:47,214 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 2506 transitions. [2023-11-29 01:48:47,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 01:48:47,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 2506 transitions. [2023-11-29 01:48:47,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 01:48:47,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:47,216 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:48:47,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:48:47,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:47,419 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:47,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:47,419 INFO L85 PathProgramCache]: Analyzing trace with hash 118060256, now seen corresponding path program 1 times [2023-11-29 01:48:47,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:47,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66965889] [2023-11-29 01:48:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:47,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:47,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:47,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872095127] [2023-11-29 01:48:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:47,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:47,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:47,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:47,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:48:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:47,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:48:47,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:48:47,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:47,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:47,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66965889] [2023-11-29 01:48:47,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:47,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872095127] [2023-11-29 01:48:47,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872095127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:47,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:47,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:48:47,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20593390] [2023-11-29 01:48:47,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:47,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:48:47,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:47,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:48:47,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:48:47,848 INFO L87 Difference]: Start difference. First operand 1351 states and 2506 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 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 01:48:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:47,990 INFO L93 Difference]: Finished difference Result 2503 states and 4732 transitions. [2023-11-29 01:48:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:48:47,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 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 139 [2023-11-29 01:48:47,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:48,002 INFO L225 Difference]: With dead ends: 2503 [2023-11-29 01:48:48,002 INFO L226 Difference]: Without dead ends: 1338 [2023-11-29 01:48:48,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 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 01:48:48,008 INFO L413 NwaCegarLoop]: 2448 mSDtfsCounter, 163 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:48,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 7322 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2023-11-29 01:48:48,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1337. [2023-11-29 01:48:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 830 states have (on average 1.7819277108433735) internal successors, (1479), 1331 states have internal predecessors, (1479), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-29 01:48:48,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2485 transitions. [2023-11-29 01:48:48,160 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2485 transitions. Word has length 139 [2023-11-29 01:48:48,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:48,160 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 2485 transitions. [2023-11-29 01:48:48,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 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 01:48:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2485 transitions. [2023-11-29 01:48:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 01:48:48,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:48,162 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:48:48,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:48:48,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:48,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:48,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash -697993198, now seen corresponding path program 1 times [2023-11-29 01:48:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:48,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169803434] [2023-11-29 01:48:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:48,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:48,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332913286] [2023-11-29 01:48:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:48,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:48,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:48,416 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:48,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:48:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:48,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:48:48,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:48:48,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:48,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:48,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169803434] [2023-11-29 01:48:48,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:48,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332913286] [2023-11-29 01:48:48,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332913286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:48,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:48,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:48:48,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223286622] [2023-11-29 01:48:48,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:48,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:48:48,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:48,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:48:48,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:48:48,749 INFO L87 Difference]: Start difference. First operand 1337 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 01:48:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:48,881 INFO L93 Difference]: Finished difference Result 2443 states and 4628 transitions. [2023-11-29 01:48:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:48:48,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 139 [2023-11-29 01:48:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:48,889 INFO L225 Difference]: With dead ends: 2443 [2023-11-29 01:48:48,889 INFO L226 Difference]: Without dead ends: 1292 [2023-11-29 01:48:48,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 01:48:48,894 INFO L413 NwaCegarLoop]: 2381 mSDtfsCounter, 78 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 7060 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:48,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 7060 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:48:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2023-11-29 01:48:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2023-11-29 01:48:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 785 states have (on average 1.7859872611464969) internal successors, (1402), 1286 states have internal predecessors, (1402), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-29 01:48:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 2408 transitions. [2023-11-29 01:48:49,035 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 2408 transitions. Word has length 139 [2023-11-29 01:48:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:49,036 INFO L495 AbstractCegarLoop]: Abstraction has 1292 states and 2408 transitions. [2023-11-29 01:48:49,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 01:48:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 2408 transitions. [2023-11-29 01:48:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 01:48:49,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:49,038 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:48:49,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:49,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:49,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:49,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:49,239 INFO L85 PathProgramCache]: Analyzing trace with hash 331366100, now seen corresponding path program 1 times [2023-11-29 01:48:49,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:49,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816005775] [2023-11-29 01:48:49,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:49,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:49,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:49,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830928166] [2023-11-29 01:48:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:49,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:49,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:49,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:49,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:48:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:49,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:48:49,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:48:49,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:49,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:49,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816005775] [2023-11-29 01:48:49,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:49,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830928166] [2023-11-29 01:48:49,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830928166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:49,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:49,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:48:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859071141] [2023-11-29 01:48:49,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:49,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:49,884 INFO L87 Difference]: Start difference. First operand 1292 states and 2408 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 01:48:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:50,090 INFO L93 Difference]: Finished difference Result 3778 states and 7098 transitions. [2023-11-29 01:48:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-11-29 01:48:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:50,112 INFO L225 Difference]: With dead ends: 3778 [2023-11-29 01:48:50,112 INFO L226 Difference]: Without dead ends: 2489 [2023-11-29 01:48:50,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 01:48:50,119 INFO L413 NwaCegarLoop]: 2742 mSDtfsCounter, 1229 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 5118 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:50,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 5118 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:50,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2023-11-29 01:48:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2487. [2023-11-29 01:48:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 1480 states have (on average 1.8135135135135134) internal successors, (2684), 2481 states have internal predecessors, (2684), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2023-11-29 01:48:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4690 transitions. [2023-11-29 01:48:50,511 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4690 transitions. Word has length 139 [2023-11-29 01:48:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:50,512 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 4690 transitions. [2023-11-29 01:48:50,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 01:48:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4690 transitions. [2023-11-29 01:48:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-29 01:48:50,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:50,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:50,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:48:50,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:50,722 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:50,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:50,723 INFO L85 PathProgramCache]: Analyzing trace with hash 446802752, now seen corresponding path program 1 times [2023-11-29 01:48:50,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:50,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411808842] [2023-11-29 01:48:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:50,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:50,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:50,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744029923] [2023-11-29 01:48:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:50,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:50,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:50,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:50,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:48:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:51,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:48:51,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:48:51,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:51,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:51,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411808842] [2023-11-29 01:48:51,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:51,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744029923] [2023-11-29 01:48:51,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744029923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:51,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:51,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:48:51,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432092796] [2023-11-29 01:48:51,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:51,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:48:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:48:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:48:51,390 INFO L87 Difference]: Start difference. First operand 2487 states and 4690 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 01:48:52,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:52,874 INFO L93 Difference]: Finished difference Result 3776 states and 7095 transitions. [2023-11-29 01:48:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:48:52,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 152 [2023-11-29 01:48:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:52,891 INFO L225 Difference]: With dead ends: 3776 [2023-11-29 01:48:52,892 INFO L226 Difference]: Without dead ends: 1409 [2023-11-29 01:48:52,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 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 01:48:52,903 INFO L413 NwaCegarLoop]: 2526 mSDtfsCounter, 2625 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2625 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:52,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2625 Valid, 3718 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:48:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2023-11-29 01:48:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1409. [2023-11-29 01:48:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 902 states have (on average 1.747228381374723) internal successors, (1576), 1403 states have internal predecessors, (1576), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-29 01:48:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 2582 transitions. [2023-11-29 01:48:53,133 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 2582 transitions. Word has length 152 [2023-11-29 01:48:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:53,134 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 2582 transitions. [2023-11-29 01:48:53,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 01:48:53,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 2582 transitions. [2023-11-29 01:48:53,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 01:48:53,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:53,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:53,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:48:53,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:53,338 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:53,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1207736813, now seen corresponding path program 1 times [2023-11-29 01:48:53,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:53,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261985365] [2023-11-29 01:48:53,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:53,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:53,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:53,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753950114] [2023-11-29 01:48:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:53,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:53,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:53,394 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:53,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:48:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:53,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:48:53,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:53,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:48:54,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:48:54,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:48:54,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:48:54,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:48:54,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:54,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261985365] [2023-11-29 01:48:54,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:54,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753950114] [2023-11-29 01:48:54,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753950114] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:54,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:54,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 01:48:54,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638307316] [2023-11-29 01:48:54,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:54,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:48:54,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:54,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:48:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:48:54,264 INFO L87 Difference]: Start difference. First operand 1409 states and 2582 transitions. Second operand has 9 states, 9 states have (on average 26.88888888888889) internal successors, (242), 9 states have internal predecessors, (242), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:49:00,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:00,038 INFO L93 Difference]: Finished difference Result 5284 states and 9812 transitions. [2023-11-29 01:49:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:49:00,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.88888888888889) internal successors, (242), 9 states have internal predecessors, (242), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 162 [2023-11-29 01:49:00,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:00,065 INFO L225 Difference]: With dead ends: 5284 [2023-11-29 01:49:00,066 INFO L226 Difference]: Without dead ends: 4177 [2023-11-29 01:49:00,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 312 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:49:00,070 INFO L413 NwaCegarLoop]: 1922 mSDtfsCounter, 5043 mSDsluCounter, 8670 mSDsCounter, 0 mSdLazyCounter, 4100 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6047 SdHoareTripleChecker+Valid, 10592 SdHoareTripleChecker+Invalid, 4606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 4100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:00,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6047 Valid, 10592 Invalid, 4606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [506 Valid, 4100 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 01:49:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2023-11-29 01:49:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 1803. [2023-11-29 01:49:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1292 states have (on average 1.653250773993808) internal successors, (2136), 1793 states have internal predecessors, (2136), 506 states have call successors, (506), 3 states have call predecessors, (506), 3 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2023-11-29 01:49:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 3148 transitions. [2023-11-29 01:49:00,768 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 3148 transitions. Word has length 162 [2023-11-29 01:49:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:00,768 INFO L495 AbstractCegarLoop]: Abstraction has 1803 states and 3148 transitions. [2023-11-29 01:49:00,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.88888888888889) internal successors, (242), 9 states have internal predecessors, (242), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:49:00,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 3148 transitions. [2023-11-29 01:49:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-11-29 01:49:00,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:00,774 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-11-29 01:49:00,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:49:00,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:00,975 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:00,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:00,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1652218035, now seen corresponding path program 1 times [2023-11-29 01:49:00,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:00,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082716855] [2023-11-29 01:49:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:00,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:01,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:01,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895898370] [2023-11-29 01:49:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:01,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:01,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:01,112 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:01,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:49:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:01,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:49:01,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:01,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:49:02,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:02,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:02,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:02,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:02,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:49:02,381 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:49:02,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:49:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:49:02,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082716855] [2023-11-29 01:49:02,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895898370] [2023-11-29 01:49:02,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895898370] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:49:02,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:49:02,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 01:49:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762129694] [2023-11-29 01:49:02,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:49:02,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:49:02,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:02,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:49:02,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:49:02,812 INFO L87 Difference]: Start difference. First operand 1803 states and 3148 transitions. Second operand has 15 states, 15 states have (on average 46.53333333333333) internal successors, (698), 15 states have internal predecessors, (698), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:49:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:13,846 INFO L93 Difference]: Finished difference Result 10704 states and 19837 transitions. [2023-11-29 01:49:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:49:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 46.53333333333333) internal successors, (698), 15 states have internal predecessors, (698), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 390 [2023-11-29 01:49:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:13,892 INFO L225 Difference]: With dead ends: 10704 [2023-11-29 01:49:13,892 INFO L226 Difference]: Without dead ends: 9597 [2023-11-29 01:49:13,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 762 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=390, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:49:13,898 INFO L413 NwaCegarLoop]: 1922 mSDtfsCounter, 22365 mSDsluCounter, 15270 mSDsCounter, 0 mSdLazyCounter, 7835 mSolverCounterSat, 4190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25375 SdHoareTripleChecker+Valid, 17192 SdHoareTripleChecker+Invalid, 12025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4190 IncrementalHoareTripleChecker+Valid, 7835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:13,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25375 Valid, 17192 Invalid, 12025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4190 Valid, 7835 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-11-29 01:49:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9597 states. [2023-11-29 01:49:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9597 to 2823. [2023-11-29 01:49:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2306 states have (on average 1.5637467476149176) internal successors, (3606), 2807 states have internal predecessors, (3606), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2023-11-29 01:49:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 4630 transitions. [2023-11-29 01:49:15,408 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 4630 transitions. Word has length 390 [2023-11-29 01:49:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:15,409 INFO L495 AbstractCegarLoop]: Abstraction has 2823 states and 4630 transitions. [2023-11-29 01:49:15,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 46.53333333333333) internal successors, (698), 15 states have internal predecessors, (698), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:49:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 4630 transitions. [2023-11-29 01:49:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2023-11-29 01:49:15,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:15,439 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2023-11-29 01:49:15,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:49:15,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:15,642 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:15,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:15,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1203654131, now seen corresponding path program 2 times [2023-11-29 01:49:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:15,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750680776] [2023-11-29 01:49:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:15,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:15,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452705411] [2023-11-29 01:49:15,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:49:15,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:15,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:15,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:15,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:49:16,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:49:16,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:49:16,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:49:16,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:16,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2023-11-29 01:49:16,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:49:16,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:16,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750680776] [2023-11-29 01:49:16,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:16,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452705411] [2023-11-29 01:49:16,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452705411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:16,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:16,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:49:16,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981776956] [2023-11-29 01:49:16,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:16,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:49:16,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:16,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:49:16,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:49:16,987 INFO L87 Difference]: Start difference. First operand 2823 states and 4630 transitions. Second operand has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 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 01:49:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:17,367 INFO L93 Difference]: Finished difference Result 3939 states and 6786 transitions. [2023-11-29 01:49:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:49:17,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 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 846 [2023-11-29 01:49:17,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:17,375 INFO L225 Difference]: With dead ends: 3939 [2023-11-29 01:49:17,375 INFO L226 Difference]: Without dead ends: 2833 [2023-11-29 01:49:17,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:49:17,380 INFO L413 NwaCegarLoop]: 2380 mSDtfsCounter, 19 mSDsluCounter, 11671 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 14051 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:17,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 14051 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:49:17,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2023-11-29 01:49:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2830. [2023-11-29 01:49:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2313 states have (on average 1.5624729788153913) internal successors, (3614), 2814 states have internal predecessors, (3614), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2023-11-29 01:49:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 4638 transitions. [2023-11-29 01:49:17,745 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 4638 transitions. Word has length 846 [2023-11-29 01:49:17,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:17,746 INFO L495 AbstractCegarLoop]: Abstraction has 2830 states and 4638 transitions. [2023-11-29 01:49:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 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 01:49:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 4638 transitions. [2023-11-29 01:49:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2023-11-29 01:49:17,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:17,759 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2023-11-29 01:49:17,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:49:17,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:17,960 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 946961787, now seen corresponding path program 1 times [2023-11-29 01:49:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460670319] [2023-11-29 01:49:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:18,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:18,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544220683] [2023-11-29 01:49:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:18,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:18,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:18,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:18,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:49:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:19,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 4079 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 01:49:19,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:19,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:49:19,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:19,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:20,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:20,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:20,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:20,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:20,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:20,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:20,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:20,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:20,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:49:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:49:20,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:49:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:49:21,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:21,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460670319] [2023-11-29 01:49:21,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:21,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544220683] [2023-11-29 01:49:21,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544220683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:49:21,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:49:21,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-29 01:49:21,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587048300] [2023-11-29 01:49:21,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:49:21,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 01:49:21,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:21,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 01:49:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:49:21,783 INFO L87 Difference]: Start difference. First operand 2830 states and 4638 transitions. Second operand has 27 states, 27 states have (on average 59.666666666666664) internal successors, (1611), 27 states have internal predecessors, (1611), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:49:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:46,938 INFO L93 Difference]: Finished difference Result 19442 states and 35729 transitions. [2023-11-29 01:49:46,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 01:49:46,939 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 59.666666666666664) internal successors, (1611), 27 states have internal predecessors, (1611), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 847 [2023-11-29 01:49:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:46,988 INFO L225 Difference]: With dead ends: 19442 [2023-11-29 01:49:46,988 INFO L226 Difference]: Without dead ends: 18328 [2023-11-29 01:49:46,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1714 GetRequests, 1664 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=846, Invalid=1506, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 01:49:46,995 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 39319 mSDsluCounter, 32789 mSDsCounter, 0 mSdLazyCounter, 17612 mSolverCounterSat, 4268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45341 SdHoareTripleChecker+Valid, 34710 SdHoareTripleChecker+Invalid, 21880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4268 IncrementalHoareTripleChecker+Valid, 17612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:46,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45341 Valid, 34710 Invalid, 21880 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4268 Valid, 17612 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2023-11-29 01:49:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18328 states. [2023-11-29 01:49:50,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18328 to 4870. [2023-11-29 01:49:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4870 states, 4341 states have (on average 1.5097903708822853) internal successors, (6554), 4842 states have internal predecessors, (6554), 524 states have call successors, (524), 3 states have call predecessors, (524), 3 states have return successors, (524), 25 states have call predecessors, (524), 524 states have call successors, (524) [2023-11-29 01:49:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4870 states to 4870 states and 7602 transitions. [2023-11-29 01:49:50,165 INFO L78 Accepts]: Start accepts. Automaton has 4870 states and 7602 transitions. Word has length 847 [2023-11-29 01:49:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:50,166 INFO L495 AbstractCegarLoop]: Abstraction has 4870 states and 7602 transitions. [2023-11-29 01:49:50,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 59.666666666666664) internal successors, (1611), 27 states have internal predecessors, (1611), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:49:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4870 states and 7602 transitions. [2023-11-29 01:49:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1760 [2023-11-29 01:49:50,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:50,192 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2023-11-29 01:49:50,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:49:50,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:49:50,393 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:50,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash -815947013, now seen corresponding path program 2 times [2023-11-29 01:49:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:50,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216870351] [2023-11-29 01:49:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:50,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:50,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977270054] [2023-11-29 01:49:50,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:49:50,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:50,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:50,963 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:50,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:49:52,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:49:52,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:49:52,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:49:52,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17561 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17561 trivial. 0 not checked. [2023-11-29 01:49:52,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:49:52,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216870351] [2023-11-29 01:49:52,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977270054] [2023-11-29 01:49:52,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977270054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:52,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:52,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:49:52,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433015483] [2023-11-29 01:49:52,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:52,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:49:52,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:49:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:49:52,444 INFO L87 Difference]: Start difference. First operand 4870 states and 7602 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 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 01:49:52,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:52,979 INFO L93 Difference]: Finished difference Result 5989 states and 9759 transitions. [2023-11-29 01:49:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:49:52,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 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 1759 [2023-11-29 01:49:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:52,992 INFO L225 Difference]: With dead ends: 5989 [2023-11-29 01:49:52,992 INFO L226 Difference]: Without dead ends: 4876 [2023-11-29 01:49:52,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1761 GetRequests, 1753 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:49:52,998 INFO L413 NwaCegarLoop]: 2373 mSDtfsCounter, 38 mSDsluCounter, 11629 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 14002 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:52,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 14002 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:49:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2023-11-29 01:49:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 4872. [2023-11-29 01:49:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4343 states have (on average 1.509555606723463) internal successors, (6556), 4844 states have internal predecessors, (6556), 524 states have call successors, (524), 3 states have call predecessors, (524), 3 states have return successors, (524), 25 states have call predecessors, (524), 524 states have call successors, (524) [2023-11-29 01:49:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 7604 transitions. [2023-11-29 01:49:53,456 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 7604 transitions. Word has length 1759 [2023-11-29 01:49:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:53,458 INFO L495 AbstractCegarLoop]: Abstraction has 4872 states and 7604 transitions. [2023-11-29 01:49:53,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 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 01:49:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 7604 transitions. [2023-11-29 01:49:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1761 [2023-11-29 01:49:53,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:53,481 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2023-11-29 01:49:53,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:49:53,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:49:53,682 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:53,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1686092536, now seen corresponding path program 1 times [2023-11-29 01:49:53,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:53,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576670613] [2023-11-29 01:49:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:54,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:54,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842286821] [2023-11-29 01:49:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:54,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:54,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:54,297 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:54,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:49:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:57,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 8508 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 01:49:57,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:57,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:49:57,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:57,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:57,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:57,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:57,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:57,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:57,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:57,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:58,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:59,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:59,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:59,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:59,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:49:59,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:49:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 17561 backedges. 0 proven. 17558 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:49:59,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:50:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 17561 backedges. 0 proven. 17558 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:50:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576670613] [2023-11-29 01:50:01,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:50:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842286821] [2023-11-29 01:50:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842286821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:50:01,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:50:01,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-11-29 01:50:01,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943366304] [2023-11-29 01:50:01,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:50:01,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 01:50:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 01:50:01,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1136, Invalid=1414, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 01:50:01,990 INFO L87 Difference]: Start difference. First operand 4872 states and 7604 transitions. Second operand has 51 states, 51 states have (on average 67.37254901960785) internal successors, (3436), 51 states have internal predecessors, (3436), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:51:13,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:51:13,420 INFO L93 Difference]: Finished difference Result 36858 states and 67437 transitions. [2023-11-29 01:51:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-29 01:51:13,421 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 67.37254901960785) internal successors, (3436), 51 states have internal predecessors, (3436), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1760 [2023-11-29 01:51:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:51:13,547 INFO L225 Difference]: With dead ends: 36858 [2023-11-29 01:51:13,547 INFO L226 Difference]: Without dead ends: 35742 [2023-11-29 01:51:13,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3564 GetRequests, 3466 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3414, Invalid=5898, Unknown=0, NotChecked=0, Total=9312 [2023-11-29 01:51:13,562 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 135017 mSDsluCounter, 52515 mSDsCounter, 0 mSdLazyCounter, 27288 mSolverCounterSat, 15351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147063 SdHoareTripleChecker+Valid, 54436 SdHoareTripleChecker+Invalid, 42639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 15351 IncrementalHoareTripleChecker+Valid, 27288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:51:13,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147063 Valid, 54436 Invalid, 42639 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [15351 Valid, 27288 Invalid, 0 Unknown, 0 Unchecked, 46.2s Time] [2023-11-29 01:51:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35742 states. [2023-11-29 01:51:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35742 to 8952. [2023-11-29 01:51:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8952 states, 8399 states have (on average 1.480652458626027) internal successors, (12436), 8900 states have internal predecessors, (12436), 548 states have call successors, (548), 3 states have call predecessors, (548), 3 states have return successors, (548), 49 states have call predecessors, (548), 548 states have call successors, (548) [2023-11-29 01:51:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8952 states to 8952 states and 13532 transitions. [2023-11-29 01:51:19,729 INFO L78 Accepts]: Start accepts. Automaton has 8952 states and 13532 transitions. Word has length 1760 [2023-11-29 01:51:19,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:51:19,730 INFO L495 AbstractCegarLoop]: Abstraction has 8952 states and 13532 transitions. [2023-11-29 01:51:19,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 67.37254901960785) internal successors, (3436), 51 states have internal predecessors, (3436), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:51:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 8952 states and 13532 transitions. [2023-11-29 01:51:19,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3585 [2023-11-29 01:51:19,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:51:19,803 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 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] [2023-11-29 01:51:19,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:51:20,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:51:20,004 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:51:20,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1120284680, now seen corresponding path program 2 times [2023-11-29 01:51:20,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:20,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766477914] [2023-11-29 01:51:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:20,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:21,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:51:21,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994944438] [2023-11-29 01:51:21,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:51:21,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:21,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:21,047 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:21,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:51:23,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:51:23,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:51:23,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:51:23,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 78665 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78665 trivial. 0 not checked. [2023-11-29 01:51:23,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:51:23,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:23,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766477914] [2023-11-29 01:51:23,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:51:23,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994944438] [2023-11-29 01:51:23,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994944438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:51:23,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:51:23,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:51:23,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175515958] [2023-11-29 01:51:23,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:51:23,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:51:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:51:23,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:51:23,960 INFO L87 Difference]: Start difference. First operand 8952 states and 13532 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 01:51:24,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:51:24,580 INFO L93 Difference]: Finished difference Result 10072 states and 15690 transitions. [2023-11-29 01:51:24,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:51:24,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 3584 [2023-11-29 01:51:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:51:24,599 INFO L225 Difference]: With dead ends: 10072 [2023-11-29 01:51:24,599 INFO L226 Difference]: Without dead ends: 8957 [2023-11-29 01:51:24,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3583 GetRequests, 3579 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:51:24,604 INFO L413 NwaCegarLoop]: 2389 mSDtfsCounter, 6 mSDsluCounter, 9312 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11701 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:51:24,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11701 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:51:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8957 states. [2023-11-29 01:51:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8957 to 8956. [2023-11-29 01:51:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8956 states, 8403 states have (on average 1.4805426633345233) internal successors, (12441), 8904 states have internal predecessors, (12441), 548 states have call successors, (548), 3 states have call predecessors, (548), 3 states have return successors, (548), 49 states have call predecessors, (548), 548 states have call successors, (548) [2023-11-29 01:51:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8956 states to 8956 states and 13537 transitions. [2023-11-29 01:51:25,338 INFO L78 Accepts]: Start accepts. Automaton has 8956 states and 13537 transitions. Word has length 3584 [2023-11-29 01:51:25,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:51:25,340 INFO L495 AbstractCegarLoop]: Abstraction has 8956 states and 13537 transitions. [2023-11-29 01:51:25,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 01:51:25,340 INFO L276 IsEmpty]: Start isEmpty. Operand 8956 states and 13537 transitions. [2023-11-29 01:51:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3585 [2023-11-29 01:51:25,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:51:25,419 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 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] [2023-11-29 01:51:25,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:51:25,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:51:25,620 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:51:25,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1329315450, now seen corresponding path program 1 times [2023-11-29 01:51:25,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414782510] [2023-11-29 01:51:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:25,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:26,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:51:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728412727] [2023-11-29 01:51:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:26,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:26,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:26,599 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:26,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:51:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:32,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 17362 conjuncts, 143 conjunts are in the unsatisfiable core [2023-11-29 01:51:32,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:32,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:51:32,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:32,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:33,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:34,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:35,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:35,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:35,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:35,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:35,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:35,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:35,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:35,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:35,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:36,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:36,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:36,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:36,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:36,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:36,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:36,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:36,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:37,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:37,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:37,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:37,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:37,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:37,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:51:37,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:51:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 78665 backedges. 0 proven. 78662 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:51:37,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 78665 backedges. 0 proven. 78662 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:51:44,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:44,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414782510] [2023-11-29 01:51:44,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:51:44,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728412727] [2023-11-29 01:51:44,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728412727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:51:44,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:51:44,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2023-11-29 01:51:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545590939] [2023-11-29 01:51:44,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:51:44,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-11-29 01:51:44,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:44,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-11-29 01:51:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4568, Invalid=5134, Unknown=0, NotChecked=0, Total=9702 [2023-11-29 01:51:44,069 INFO L87 Difference]: Start difference. First operand 8956 states and 13537 transitions. Second operand has 99 states, 99 states have (on average 71.55555555555556) internal successors, (7084), 99 states have internal predecessors, (7084), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:56:54,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:54,044 INFO L93 Difference]: Finished difference Result 71834 states and 131047 transitions. [2023-11-29 01:56:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-11-29 01:56:54,046 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 71.55555555555556) internal successors, (7084), 99 states have internal predecessors, (7084), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 3584 [2023-11-29 01:56:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:54,218 INFO L225 Difference]: With dead ends: 71834 [2023-11-29 01:56:54,218 INFO L226 Difference]: Without dead ends: 70714 [2023-11-29 01:56:54,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7260 GetRequests, 7066 SyntacticMatches, 3 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5549 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=13734, Invalid=23322, Unknown=0, NotChecked=0, Total=37056 [2023-11-29 01:56:54,250 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 255126 mSDsluCounter, 106218 mSDsCounter, 0 mSdLazyCounter, 58574 mSolverCounterSat, 27053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279220 SdHoareTripleChecker+Valid, 108139 SdHoareTripleChecker+Invalid, 85627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 27053 IncrementalHoareTripleChecker+Valid, 58574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:54,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279220 Valid, 108139 Invalid, 85627 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [27053 Valid, 58574 Invalid, 0 Unknown, 0 Unchecked, 79.5s Time] [2023-11-29 01:56:54,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70714 states. [2023-11-29 01:57:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70714 to 17116. [2023-11-29 01:57:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17116 states, 16515 states have (on average 1.4653950953678474) internal successors, (24201), 17016 states have internal predecessors, (24201), 596 states have call successors, (596), 3 states have call predecessors, (596), 3 states have return successors, (596), 97 states have call predecessors, (596), 596 states have call successors, (596) [2023-11-29 01:57:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17116 states to 17116 states and 25393 transitions. [2023-11-29 01:57:06,489 INFO L78 Accepts]: Start accepts. Automaton has 17116 states and 25393 transitions. Word has length 3584 [2023-11-29 01:57:06,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:06,491 INFO L495 AbstractCegarLoop]: Abstraction has 17116 states and 25393 transitions. [2023-11-29 01:57:06,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 71.55555555555556) internal successors, (7084), 99 states have internal predecessors, (7084), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:57:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 17116 states and 25393 transitions. [2023-11-29 01:57:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7233 [2023-11-29 01:57:06,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:06,762 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 93, 93, 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] [2023-11-29 01:57:06,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:57:06,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:57:06,963 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:06,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1188292730, now seen corresponding path program 2 times [2023-11-29 01:57:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032446991] [2023-11-29 01:57:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:09,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:57:09,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812563216] [2023-11-29 01:57:09,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:57:09,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:09,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:09,591 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:09,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:57:14,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:57:14,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:57:14,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:57:14,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:27,392 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:57:37,494 WARN L293 SmtUtils]: Spent 5.56s 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 01:58:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 332201 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 332201 trivial. 0 not checked. [2023-11-29 01:58:02,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:58:02,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:02,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032446991] [2023-11-29 01:58:02,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:58:02,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812563216] [2023-11-29 01:58:02,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812563216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:02,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:02,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:58:02,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472278478] [2023-11-29 01:58:02,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:02,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:58:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:02,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:58:02,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=29, Unknown=2, NotChecked=0, Total=42 [2023-11-29 01:58:02,055 INFO L87 Difference]: Start difference. First operand 17116 states and 25393 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 01:58:06,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:10,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:14,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:17,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:22,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:26,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:30,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:34,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:38,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:42,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:43,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:58:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:44,800 INFO L93 Difference]: Finished difference Result 18241 states and 27557 transitions. [2023-11-29 01:58:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:58:44,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 7232 [2023-11-29 01:58:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:44,833 INFO L225 Difference]: With dead ends: 18241 [2023-11-29 01:58:44,834 INFO L226 Difference]: Without dead ends: 17122 [2023-11-29 01:58:44,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7232 GetRequests, 7226 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=15, Invalid=39, Unknown=2, NotChecked=0, Total=56 [2023-11-29 01:58:44,843 INFO L413 NwaCegarLoop]: 2379 mSDtfsCounter, 12 mSDsluCounter, 11611 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13990 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:44,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13990 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 9 Unknown, 0 Unchecked, 41.7s Time] [2023-11-29 01:58:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17122 states. [2023-11-29 01:58:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17122 to 17116. [2023-11-29 01:58:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17116 states, 16515 states have (on average 1.4653950953678474) internal successors, (24201), 17016 states have internal predecessors, (24201), 596 states have call successors, (596), 3 states have call predecessors, (596), 3 states have return successors, (596), 97 states have call predecessors, (596), 596 states have call successors, (596) [2023-11-29 01:58:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17116 states to 17116 states and 25393 transitions. [2023-11-29 01:58:46,180 INFO L78 Accepts]: Start accepts. Automaton has 17116 states and 25393 transitions. Word has length 7232 [2023-11-29 01:58:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:46,184 INFO L495 AbstractCegarLoop]: Abstraction has 17116 states and 25393 transitions. [2023-11-29 01:58:46,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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 01:58:46,185 INFO L276 IsEmpty]: Start isEmpty. Operand 17116 states and 25393 transitions. [2023-11-29 01:58:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7233 [2023-11-29 01:58:46,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:46,454 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 93, 93, 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] [2023-11-29 01:58:46,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:58:46,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:58:46,655 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:46,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:46,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1359271454, now seen corresponding path program 1 times [2023-11-29 01:58:46,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:46,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222523827] [2023-11-29 01:58:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:46,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:49,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:58:49,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358370807] [2023-11-29 01:58:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:49,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:49,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:49,010 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:49,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e123f39a-8033-485c-9d74-91f4be8c3e55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:59:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:01,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 35076 conjuncts, 287 conjunts are in the unsatisfiable core [2023-11-29 01:59:01,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:01,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:59:01,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:01,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:01,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:01,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:01,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:02,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:03,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:03,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:03,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:03,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:03,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:03,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:03,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:03,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:03,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:04,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:04,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:04,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:04,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:04,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:04,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:04,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:04,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:04,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:05,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:05,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:05,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:05,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:05,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:05,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:05,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:05,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:05,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:06,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:06,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:06,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:06,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:06,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:06,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:06,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:06,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:07,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:07,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:07,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:07,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:07,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:07,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:07,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:08,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:08,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:08,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:08,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:08,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:08,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:08,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:08,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:09,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:09,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:09,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:09,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:09,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:09,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:10,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:10,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:10,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:10,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:10,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:10,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:11,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:11,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:11,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:11,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:11,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:11,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:11,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:12,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:12,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:12,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:12,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:12,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:12,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:12,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:13,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:13,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:13,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:59:13,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:59:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 332201 backedges. 0 proven. 332198 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:59:13,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:59:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 332201 backedges. 0 proven. 332198 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:59:31,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:31,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222523827] [2023-11-29 01:59:31,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:31,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358370807] [2023-11-29 01:59:31,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358370807] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:59:31,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:59:31,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2023-11-29 01:59:31,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85215728] [2023-11-29 01:59:31,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:59:31,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2023-11-29 01:59:31,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2023-11-29 01:59:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18344, Invalid=19486, Unknown=0, NotChecked=0, Total=37830 [2023-11-29 01:59:31,716 INFO L87 Difference]: Start difference. First operand 17116 states and 25393 transitions. Second operand has 195 states, 195 states have (on average 73.74358974358974) internal successors, (14380), 195 states have internal predecessors, (14380), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)