./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_mannadiv.c --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_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/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_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_mannadiv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/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_98904e06-15ae-489c-aa3d-f0122d9c6cda/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 305ef194ca8c72f4da0a6deb18ed40b72305718d65c18a21aa3fcb3830c499e5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:39:26,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:39:26,441 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:39:26,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:39:26,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:39:26,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:39:26,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:39:26,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:39:26,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:39:26,469 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:39:26,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:39:26,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:39:26,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:39:26,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:39:26,472 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:39:26,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:39:26,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:39:26,474 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:39:26,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:39:26,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:39:26,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:39:26,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:39:26,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:39:26,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:39:26,477 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:39:26,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:39:26,478 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:39:26,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:39:26,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:39:26,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:39:26,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:39:26,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:39:26,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:39:26,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:39:26,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:39:26,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:39:26,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:39:26,482 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:39:26,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:39:26,482 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:39:26,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:39:26,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:39:26,483 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_98904e06-15ae-489c-aa3d-f0122d9c6cda/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 305ef194ca8c72f4da0a6deb18ed40b72305718d65c18a21aa3fcb3830c499e5 [2023-11-29 03:39:26,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:39:26,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:39:26,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:39:26,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:39:26,754 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:39:26,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursified_nla-digbench/recursified_mannadiv.c [2023-11-29 03:39:29,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:39:29,721 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:39:29,722 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/sv-benchmarks/c/recursified_nla-digbench/recursified_mannadiv.c [2023-11-29 03:39:29,730 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/data/7584aca49/1218e29f2ba74404b54614041660ce4f/FLAGf194945ac [2023-11-29 03:39:29,745 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/data/7584aca49/1218e29f2ba74404b54614041660ce4f [2023-11-29 03:39:29,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:39:29,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:39:29,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:39:29,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:39:29,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:39:29,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:39:29" (1/1) ... [2023-11-29 03:39:29,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7628a919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:29, skipping insertion in model container [2023-11-29 03:39:29,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:39:29" (1/1) ... [2023-11-29 03:39:29,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:39:29,929 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_98904e06-15ae-489c-aa3d-f0122d9c6cda/sv-benchmarks/c/recursified_nla-digbench/recursified_mannadiv.c[1105,1118] [2023-11-29 03:39:29,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:39:29,958 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:39:30,009 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_98904e06-15ae-489c-aa3d-f0122d9c6cda/sv-benchmarks/c/recursified_nla-digbench/recursified_mannadiv.c[1105,1118] [2023-11-29 03:39:30,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:39:30,068 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:39:30,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30 WrapperNode [2023-11-29 03:39:30,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:39:30,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:39:30,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:39:30,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:39:30,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,105 INFO L138 Inliner]: procedures = 16, calls = 57, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2023-11-29 03:39:30,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:39:30,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:39:30,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:39:30,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:39:30,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,138 INFO L175 MemorySlicer]: Split 31 memory accesses to 6 slices as follows [2, 5, 7, 7, 5, 5]. 23 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 10 writes are split as follows [0, 1, 3, 3, 1, 2]. [2023-11-29 03:39:30,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:39:30,156 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:39:30,156 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:39:30,156 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:39:30,157 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (1/1) ... [2023-11-29 03:39:30,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:39:30,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:30,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:39:30,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:39:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:39:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:39:30,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:39:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:39:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:39:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:39:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:39:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:39:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:39:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:39:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:39:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:39:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:39:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:39:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:39:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 03:39:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_42_0 [2023-11-29 03:39:30,238 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_42_0 [2023-11-29 03:39:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:39:30,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:39:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:39:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:39:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:39:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:39:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:39:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 03:39:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 03:39:30,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 03:39:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:39:30,340 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:39:30,342 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:39:30,537 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:39:30,568 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:39:30,568 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:39:30,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:39:30 BoogieIcfgContainer [2023-11-29 03:39:30,569 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:39:30,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:39:30,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:39:30,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:39:30,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:39:29" (1/3) ... [2023-11-29 03:39:30,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357fc9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:39:30, skipping insertion in model container [2023-11-29 03:39:30,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:39:30" (2/3) ... [2023-11-29 03:39:30,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357fc9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:39:30, skipping insertion in model container [2023-11-29 03:39:30,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:39:30" (3/3) ... [2023-11-29 03:39:30,577 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_mannadiv.c [2023-11-29 03:39:30,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:39:30,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:39:30,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:39:30,653 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;@3030515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:39:30,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:39:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:39:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 03:39:30,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:30,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:30,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:30,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash 432807151, now seen corresponding path program 1 times [2023-11-29 03:39:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499203707] [2023-11-29 03:39:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:30,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:30,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499203707] [2023-11-29 03:39:30,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 03:39:30,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576539587] [2023-11-29 03:39:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:30,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:30,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:30,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:30,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:39:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:30,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:39:30,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:39:31,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:39:31,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576539587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:31,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:31,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:39:31,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264660725] [2023-11-29 03:39:31,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:31,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:39:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:31,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:39:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:39:31,054 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:39:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:31,085 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2023-11-29 03:39:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:39:31,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-11-29 03:39:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:31,095 INFO L225 Difference]: With dead ends: 56 [2023-11-29 03:39:31,096 INFO L226 Difference]: Without dead ends: 27 [2023-11-29 03:39:31,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 03:39:31,103 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:31,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:39:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-29 03:39:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-29 03:39:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 03:39:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-11-29 03:39:31,137 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 20 [2023-11-29 03:39:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:31,138 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-11-29 03:39:31,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:39:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-11-29 03:39:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 03:39:31,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:31,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:31,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 03:39:31,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:31,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:31,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:31,347 INFO L85 PathProgramCache]: Analyzing trace with hash -454476173, now seen corresponding path program 1 times [2023-11-29 03:39:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851831654] [2023-11-29 03:39:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:31,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:31,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:39:31,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80650538] [2023-11-29 03:39:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:31,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:31,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:31,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:31,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:39:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:31,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 75 conjunts are in the unsatisfiable core [2023-11-29 03:39:31,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:31,624 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 03:39:31,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:31,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:31,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 03:39:32,018 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 19 treesize of output 11 [2023-11-29 03:39:32,023 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 03:39:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:39:32,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:39:32,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:32,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851831654] [2023-11-29 03:39:32,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:39:32,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80650538] [2023-11-29 03:39:32,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80650538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:32,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:32,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 03:39:32,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308376832] [2023-11-29 03:39:32,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:32,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:39:32,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:32,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:39:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:39:32,085 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:39:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:32,440 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2023-11-29 03:39:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:39:32,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-29 03:39:32,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:32,443 INFO L225 Difference]: With dead ends: 43 [2023-11-29 03:39:32,444 INFO L226 Difference]: Without dead ends: 41 [2023-11-29 03:39:32,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:39:32,446 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:32,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 121 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:39:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-29 03:39:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2023-11-29 03:39:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 03:39:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-11-29 03:39:32,461 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 20 [2023-11-29 03:39:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:32,461 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-11-29 03:39:32,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:39:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-11-29 03:39:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 03:39:32,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:32,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:32,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 03:39:32,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:32,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:32,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:32,665 INFO L85 PathProgramCache]: Analyzing trace with hash 443267008, now seen corresponding path program 1 times [2023-11-29 03:39:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124663758] [2023-11-29 03:39:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:32,698 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:39:32,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87405811] [2023-11-29 03:39:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:32,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:32,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:32,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:32,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:39:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:32,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 101 conjunts are in the unsatisfiable core [2023-11-29 03:39:32,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:32,835 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 03:39:32,844 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 03:39:32,919 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 03:39:32,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:32,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 03:39:32,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:33,537 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 21 treesize of output 13 [2023-11-29 03:39:33,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 03:39:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:39:33,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:39:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:39:34,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:34,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124663758] [2023-11-29 03:39:34,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:39:34,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87405811] [2023-11-29 03:39:34,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87405811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:39:34,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:39:34,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2023-11-29 03:39:34,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785030159] [2023-11-29 03:39:34,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:39:34,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 03:39:34,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 03:39:34,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:39:34,604 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 26 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 20 states have internal predecessors, (32), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 03:39:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:35,902 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2023-11-29 03:39:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:39:35,903 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 20 states have internal predecessors, (32), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 30 [2023-11-29 03:39:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:35,905 INFO L225 Difference]: With dead ends: 53 [2023-11-29 03:39:35,905 INFO L226 Difference]: Without dead ends: 41 [2023-11-29 03:39:35,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=1289, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 03:39:35,908 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:35,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 65 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:39:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-29 03:39:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-11-29 03:39:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 03:39:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-11-29 03:39:35,919 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 30 [2023-11-29 03:39:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:35,920 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-11-29 03:39:35,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 20 states have internal predecessors, (32), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 03:39:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-11-29 03:39:35,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 03:39:35,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:35,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:35,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:39:36,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:36,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:36,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash -746539634, now seen corresponding path program 1 times [2023-11-29 03:39:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905390749] [2023-11-29 03:39:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:36,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:36,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:39:36,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659585052] [2023-11-29 03:39:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:36,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:36,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:36,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:36,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:39:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:36,269 WARN L260 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 148 conjunts are in the unsatisfiable core [2023-11-29 03:39:36,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:36,291 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 03:39:36,296 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 03:39:36,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 03:39:36,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:36,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:36,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-11-29 03:39:36,717 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 19 treesize of output 11 [2023-11-29 03:39:36,726 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 19 treesize of output 11 [2023-11-29 03:39:36,888 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 21 treesize of output 13 [2023-11-29 03:39:36,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 03:39:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:39:36,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:39:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:39:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905390749] [2023-11-29 03:39:37,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:39:37,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659585052] [2023-11-29 03:39:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659585052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:39:37,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:39:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-11-29 03:39:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581461185] [2023-11-29 03:39:37,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:39:37,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 03:39:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:37,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 03:39:37,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:39:37,319 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 16 states have internal predecessors, (34), 10 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 03:39:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:38,234 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2023-11-29 03:39:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:39:38,235 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 16 states have internal predecessors, (34), 10 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 31 [2023-11-29 03:39:38,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:38,237 INFO L225 Difference]: With dead ends: 59 [2023-11-29 03:39:38,237 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 03:39:38,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 03:39:38,239 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:38,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 204 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:39:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 03:39:38,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-11-29 03:39:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2023-11-29 03:39:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-11-29 03:39:38,254 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 31 [2023-11-29 03:39:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:38,254 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-11-29 03:39:38,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 16 states have internal predecessors, (34), 10 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 03:39:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-11-29 03:39:38,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:39:38,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:38,257 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:38,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:39:38,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:38,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:38,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1603601130, now seen corresponding path program 1 times [2023-11-29 03:39:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:38,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912210591] [2023-11-29 03:39:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:38,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:38,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:39:38,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391565350] [2023-11-29 03:39:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:38,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:38,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:38,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:38,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:39:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:38,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 153 conjunts are in the unsatisfiable core [2023-11-29 03:39:38,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:38,652 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 03:39:38,657 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 03:39:38,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:38,954 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 13 treesize of output 9 [2023-11-29 03:39:39,213 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 36 treesize of output 28 [2023-11-29 03:39:39,363 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 7 treesize of output 3 [2023-11-29 03:39:39,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-11-29 03:39:39,418 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 21 treesize of output 13 [2023-11-29 03:39:39,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 03:39:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:39:39,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:39:40,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:39:40,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2023-11-29 03:39:40,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:39:40,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2023-11-29 03:39:41,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912210591] [2023-11-29 03:39:41,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:39:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391565350] [2023-11-29 03:39:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391565350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:39:41,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:39:41,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-29 03:39:41,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209408962] [2023-11-29 03:39:41,004 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:39:41,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:39:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:39:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:39:41,006 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 20 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 03:39:42,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:42,171 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2023-11-29 03:39:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:39:42,171 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 56 [2023-11-29 03:39:42,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:42,173 INFO L225 Difference]: With dead ends: 60 [2023-11-29 03:39:42,173 INFO L226 Difference]: Without dead ends: 48 [2023-11-29 03:39:42,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 03:39:42,175 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:42,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:42,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-29 03:39:42,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-11-29 03:39:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-29 03:39:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-11-29 03:39:42,188 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 56 [2023-11-29 03:39:42,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:42,189 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-11-29 03:39:42,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 03:39:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-11-29 03:39:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:39:42,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:42,191 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:42,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:39:42,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:42,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:42,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1457132970, now seen corresponding path program 1 times [2023-11-29 03:39:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:42,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120727051] [2023-11-29 03:39:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:42,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:42,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:39:42,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279526192] [2023-11-29 03:39:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:42,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:42,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:42,418 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:42,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:39:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:42,566 WARN L260 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 205 conjunts are in the unsatisfiable core [2023-11-29 03:39:42,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:42,588 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 03:39:42,590 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 03:39:42,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 03:39:42,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:42,648 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 03:39:42,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:43,855 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 19 treesize of output 11 [2023-11-29 03:39:43,915 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 21 treesize of output 13 [2023-11-29 03:39:43,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 03:39:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 03:39:44,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:50,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:50,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120727051] [2023-11-29 03:40:50,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:40:50,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279526192] [2023-11-29 03:40:50,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279526192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:50,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:40:50,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-29 03:40:50,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633019583] [2023-11-29 03:40:50,151 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:50,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:40:50,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:50,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:40:50,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=568, Unknown=13, NotChecked=0, Total=650 [2023-11-29 03:40:50,153 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 19 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 03:41:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:01,705 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-11-29 03:41:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:41:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 56 [2023-11-29 03:41:01,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:01,707 INFO L225 Difference]: With dead ends: 54 [2023-11-29 03:41:01,708 INFO L226 Difference]: Without dead ends: 48 [2023-11-29 03:41:01,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 73.9s TimeCoverageRelationStatistics Valid=155, Invalid=1236, Unknown=15, NotChecked=0, Total=1406 [2023-11-29 03:41:01,709 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:01,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 75 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:41:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-29 03:41:01,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2023-11-29 03:41:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-29 03:41:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2023-11-29 03:41:01,721 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 56 [2023-11-29 03:41:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:01,721 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2023-11-29 03:41:01,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 03:41:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2023-11-29 03:41:01,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 03:41:01,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:01,723 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:41:01,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:41:01,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:01,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:41:01,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1628557930, now seen corresponding path program 2 times [2023-11-29 03:41:01,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:01,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653182490] [2023-11-29 03:41:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:01,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:01,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:41:01,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560351990] [2023-11-29 03:41:01,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:41:01,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:01,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:41:01,949 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:41:01,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:41:02,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:41:02,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:41:02,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 185 conjunts are in the unsatisfiable core [2023-11-29 03:41:02,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:41:02,142 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 03:41:02,146 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 03:41:02,225 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 03:41:03,083 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 46 treesize of output 34 [2023-11-29 03:41:03,088 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 47 treesize of output 35 [2023-11-29 03:41:03,165 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 28 treesize of output 24 [2023-11-29 03:41:03,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 03:41:03,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 03:41:03,665 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 31 treesize of output 23 [2023-11-29 03:41:03,671 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 27 treesize of output 19 [2023-11-29 03:41:03,677 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 23 treesize of output 15 [2023-11-29 03:41:03,681 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 19 treesize of output 11 [2023-11-29 03:41:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 03:41:03,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:41:07,427 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 8 treesize of output 4 [2023-11-29 03:41:07,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:41:07,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 89 [2023-11-29 03:41:54,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:41:54,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 89 [2023-11-29 03:41:54,908 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 8 treesize of output 4 [2023-11-29 03:42:07,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653182490] [2023-11-29 03:42:07,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560351990] [2023-11-29 03:42:07,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560351990] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:42:07,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:42:07,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-29 03:42:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448552714] [2023-11-29 03:42:07,231 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:07,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:42:07,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:42:07,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=561, Unknown=13, NotChecked=0, Total=650 [2023-11-29 03:42:07,233 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 20 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-29 03:42:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:20,904 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2023-11-29 03:42:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 03:42:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 69 [2023-11-29 03:42:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:20,906 INFO L225 Difference]: With dead ends: 56 [2023-11-29 03:42:20,906 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 03:42:20,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 72.5s TimeCoverageRelationStatistics Valid=230, Invalid=1314, Unknown=16, NotChecked=0, Total=1560 [2023-11-29 03:42:20,908 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 31 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:20,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 58 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:42:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 03:42:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2023-11-29 03:42:20,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-29 03:42:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-11-29 03:42:20,919 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 69 [2023-11-29 03:42:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:20,919 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-11-29 03:42:20,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-29 03:42:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-11-29 03:42:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:42:20,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:20,921 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:20,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:42:21,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:21,122 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:42:21,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1675987688, now seen corresponding path program 1 times [2023-11-29 03:42:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352244128] [2023-11-29 03:42:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:21,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:21,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738872546] [2023-11-29 03:42:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:21,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:21,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:21,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:21,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:42:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 160 conjunts are in the unsatisfiable core [2023-11-29 03:42:21,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:21,324 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 03:42:21,332 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 03:42:21,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:42:22,325 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 13 treesize of output 9 [2023-11-29 03:42:22,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-11-29 03:42:23,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 03:42:23,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:42:23,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 38 [2023-11-29 03:42:23,260 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 27 treesize of output 19 [2023-11-29 03:42:23,265 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 23 treesize of output 15 [2023-11-29 03:42:23,269 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 19 treesize of output 11 [2023-11-29 03:42:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:42:23,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:25,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:42:25,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2023-11-29 03:42:25,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:42:25,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2023-11-29 03:42:26,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:26,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352244128] [2023-11-29 03:42:26,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:26,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738872546] [2023-11-29 03:42:26,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738872546] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:42:26,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:42:26,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-11-29 03:42:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676615761] [2023-11-29 03:42:26,075 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:26,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:42:26,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:26,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:42:26,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:42:26,077 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 27 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 03:42:30,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:32,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:32,804 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2023-11-29 03:42:32,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 03:42:32,805 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 56 [2023-11-29 03:42:32,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:32,806 INFO L225 Difference]: With dead ends: 46 [2023-11-29 03:42:32,806 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 03:42:32,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=241, Invalid=2111, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 03:42:32,808 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:32,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 154 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 583 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2023-11-29 03:42:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 03:42:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 03:42:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 03:42:32,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 03:42:32,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2023-11-29 03:42:32,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:32,809 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:42:32,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 03:42:32,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 03:42:32,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 03:42:32,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 03:42:32,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:42:33,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:33,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 03:42:58,928 WARN L293 SmtUtils]: Spent 25.78s on a formula simplification. DAG size of input: 190 DAG size of output: 125 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 03:42:59,564 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 75) no Hoare annotation was computed. [2023-11-29 03:42:59,565 INFO L895 garLoopResultBuilder]: At program point L65-2(lines 65 75) the Hoare annotation is: (let ((.cse1 (select |#memory_int#4| |func_to_recursive_line_31_to_42_0_#in~x1.base|)) (.cse4 (select |#memory_int#3| func_to_recursive_line_31_to_42_0_~y2.base)) (.cse5 (select |#memory_int#2| func_to_recursive_line_31_to_42_0_~y3.base)) (.cse24 (select |old(#memory_int#3)| func_to_recursive_line_31_to_42_0_~y2.base))) (let ((.cse11 (= |func_to_recursive_line_31_to_42_0_#in~y2.base| func_to_recursive_line_31_to_42_0_~y2.base)) (.cse12 (= |func_to_recursive_line_31_to_42_0_#in~x1.base| func_to_recursive_line_31_to_42_0_~x1.base)) (.cse13 (= func_to_recursive_line_31_to_42_0_~y2.offset |func_to_recursive_line_31_to_42_0_#in~y2.offset|)) (.cse14 (= |func_to_recursive_line_31_to_42_0_#in~y1.base| func_to_recursive_line_31_to_42_0_~y1.base)) (.cse15 (= |func_to_recursive_line_31_to_42_0_#in~x2.base| func_to_recursive_line_31_to_42_0_~x2.base)) (.cse17 (+ (select .cse24 func_to_recursive_line_31_to_42_0_~y2.offset) 1)) (.cse18 (= |func_to_recursive_line_31_to_42_0_#in~y1.offset| func_to_recursive_line_31_to_42_0_~y1.offset)) (.cse19 (= func_to_recursive_line_31_to_42_0_~x1.offset |func_to_recursive_line_31_to_42_0_#in~x1.offset|)) (.cse20 (= func_to_recursive_line_31_to_42_0_~x2.offset |func_to_recursive_line_31_to_42_0_#in~x2.offset|)) (.cse21 (select .cse5 func_to_recursive_line_31_to_42_0_~y3.offset)) (.cse10 (select (select |#memory_int#1| |func_to_recursive_line_31_to_42_0_#in~x2.base|) |func_to_recursive_line_31_to_42_0_#in~x2.offset|)) (.cse22 (select .cse4 func_to_recursive_line_31_to_42_0_~y2.offset)) (.cse9 (select .cse1 |func_to_recursive_line_31_to_42_0_#in~x1.offset|))) (let ((.cse2 (select |old(#memory_int#2)| |func_to_recursive_line_31_to_42_0_#in~y3.base|)) (.cse0 (select |old(#memory_int#3)| |func_to_recursive_line_31_to_42_0_#in~y2.base|)) (.cse8 (select |old(#memory_int#5)| |func_to_recursive_line_31_to_42_0_#in~y1.base|)) (.cse3 (and (= |func_to_recursive_line_31_to_42_0_#in~y3.base| func_to_recursive_line_31_to_42_0_~y3.base) (= |#memory_int#2| (store |old(#memory_int#2)| func_to_recursive_line_31_to_42_0_~y3.base (let ((.cse23 (select |old(#memory_int#2)| func_to_recursive_line_31_to_42_0_~y3.base))) (store .cse23 func_to_recursive_line_31_to_42_0_~y3.offset (+ (- 1) (select .cse23 func_to_recursive_line_31_to_42_0_~y3.offset)))))) .cse11 .cse12 .cse13 .cse14 .cse15 (= |#memory_int#5| |old(#memory_int#5)|) (= (store |old(#memory_int#3)| func_to_recursive_line_31_to_42_0_~y2.base (store .cse24 func_to_recursive_line_31_to_42_0_~y2.offset .cse17)) |#memory_int#3|) .cse18 .cse19 (= func_to_recursive_line_31_to_42_0_~y3.offset |func_to_recursive_line_31_to_42_0_#in~y3.offset|) .cse20 (= (+ .cse21 (* (select (select |#memory_int#5| |func_to_recursive_line_31_to_42_0_#in~y1.base|) func_to_recursive_line_31_to_42_0_~y1.offset) .cse10) .cse22) .cse9))) (.cse6 (select |#memory_int#4| func_to_recursive_line_31_to_42_0_~x1.base)) (.cse7 (forall ((|v_ULTIMATE.start_main_~#x2~0#1.base_BEFORE_CALL_7| Int)) (= (select (select |#memory_int#1| |v_ULTIMATE.start_main_~#x2~0#1.base_BEFORE_CALL_7|) 0) 0)))) (and (or (not (= |func_to_recursive_line_31_to_42_0_#in~y1.offset| 0)) (not (= (select .cse0 0) 0)) (not (= |func_to_recursive_line_31_to_42_0_#in~x1.offset| 0)) (not (= |func_to_recursive_line_31_to_42_0_#in~x2.offset| 0)) (not (= (select .cse1 0) (select .cse2 0))) .cse3 (and (= (select .cse4 0) 0) (= func_to_recursive_line_31_to_42_0_~y3.offset 0) (= (+ (select .cse5 0) 1) (select .cse6 0))) (not (= |func_to_recursive_line_31_to_42_0_#in~y3.offset| 0)) (not (= |func_to_recursive_line_31_to_42_0_#in~y2.offset| 0)) .cse7 (not (= (select .cse8 0) 0))) (or (not (= .cse9 (+ (select .cse2 |func_to_recursive_line_31_to_42_0_#in~y3.offset|) (select .cse0 |func_to_recursive_line_31_to_42_0_#in~y2.offset|) (* .cse10 (select .cse8 |func_to_recursive_line_31_to_42_0_#in~y1.offset|))))) .cse3 (let ((.cse16 (select (select |#memory_int#1| func_to_recursive_line_31_to_42_0_~x2.base) func_to_recursive_line_31_to_42_0_~x2.offset))) (and .cse11 .cse12 .cse13 .cse14 .cse15 (= .cse16 .cse17) .cse18 .cse19 .cse20 (= (+ .cse21 (* (select (select |#memory_int#5| func_to_recursive_line_31_to_42_0_~y1.base) func_to_recursive_line_31_to_42_0_~y1.offset) .cse16) .cse22) (select .cse6 func_to_recursive_line_31_to_42_0_~x1.offset)))) .cse7))))) [2023-11-29 03:42:59,565 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 64) no Hoare annotation was computed. [2023-11-29 03:42:59,566 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int#4| |func_to_recursive_line_31_to_42_0_#in~x1.base|) |func_to_recursive_line_31_to_42_0_#in~x1.offset|)) (.cse1 (select (select |#memory_int#1| |func_to_recursive_line_31_to_42_0_#in~x2.base|) |func_to_recursive_line_31_to_42_0_#in~x2.offset|))) (or (not (= .cse0 (+ (select (select |old(#memory_int#2)| |func_to_recursive_line_31_to_42_0_#in~y3.base|) |func_to_recursive_line_31_to_42_0_#in~y3.offset|) (select (select |old(#memory_int#3)| |func_to_recursive_line_31_to_42_0_#in~y2.base|) |func_to_recursive_line_31_to_42_0_#in~y2.offset|) (* .cse1 (select (select |old(#memory_int#5)| |func_to_recursive_line_31_to_42_0_#in~y1.base|) |func_to_recursive_line_31_to_42_0_#in~y1.offset|))))) (and (= |func_to_recursive_line_31_to_42_0_#in~y3.base| func_to_recursive_line_31_to_42_0_~y3.base) (= |func_to_recursive_line_31_to_42_0_#in~y2.base| func_to_recursive_line_31_to_42_0_~y2.base) (= |func_to_recursive_line_31_to_42_0_#in~x1.base| func_to_recursive_line_31_to_42_0_~x1.base) (= func_to_recursive_line_31_to_42_0_~y2.offset |func_to_recursive_line_31_to_42_0_#in~y2.offset|) (= |func_to_recursive_line_31_to_42_0_#in~y1.base| func_to_recursive_line_31_to_42_0_~y1.base) (= |func_to_recursive_line_31_to_42_0_#in~x2.base| func_to_recursive_line_31_to_42_0_~x2.base) (= |func_to_recursive_line_31_to_42_0_#t~mem8| .cse0) (= |func_to_recursive_line_31_to_42_0_#t~mem7| (select (select |#memory_int#2| func_to_recursive_line_31_to_42_0_~y3.base) func_to_recursive_line_31_to_42_0_~y3.offset)) (= .cse1 |func_to_recursive_line_31_to_42_0_#t~mem5|) (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#5| |old(#memory_int#5)|) (= |func_to_recursive_line_31_to_42_0_#t~mem6| (select (select |#memory_int#3| |func_to_recursive_line_31_to_42_0_#in~y2.base|) |func_to_recursive_line_31_to_42_0_#in~y2.offset|)) (= |func_to_recursive_line_31_to_42_0_#t~mem4| (select (select |#memory_int#5| |func_to_recursive_line_31_to_42_0_#in~y1.base|) |func_to_recursive_line_31_to_42_0_#in~y1.offset|)) (= |func_to_recursive_line_31_to_42_0_#in~y1.offset| func_to_recursive_line_31_to_42_0_~y1.offset) (= func_to_recursive_line_31_to_42_0_~x1.offset |func_to_recursive_line_31_to_42_0_#in~x1.offset|) (= func_to_recursive_line_31_to_42_0_~y3.offset |func_to_recursive_line_31_to_42_0_#in~y3.offset|) (= func_to_recursive_line_31_to_42_0_~x2.offset |func_to_recursive_line_31_to_42_0_#in~x2.offset|) (= |#memory_int#3| |old(#memory_int#3)|)) (forall ((|v_ULTIMATE.start_main_~#x2~0#1.base_BEFORE_CALL_7| Int)) (= (select (select |#memory_int#1| |v_ULTIMATE.start_main_~#x2~0#1.base_BEFORE_CALL_7|) 0) 0)))) [2023-11-29 03:42:59,566 INFO L899 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed. [2023-11-29 03:42:59,566 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 81) no Hoare annotation was computed. [2023-11-29 03:42:59,566 INFO L899 garLoopResultBuilder]: For program point L54-1(lines 52 82) no Hoare annotation was computed. [2023-11-29 03:42:59,566 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 52 82) the Hoare annotation is: (or (not (= (select (select |#memory_int#4| |func_to_recursive_line_31_to_42_0_#in~x1.base|) |func_to_recursive_line_31_to_42_0_#in~x1.offset|) (+ (select (select |old(#memory_int#2)| |func_to_recursive_line_31_to_42_0_#in~y3.base|) |func_to_recursive_line_31_to_42_0_#in~y3.offset|) (select (select |old(#memory_int#3)| |func_to_recursive_line_31_to_42_0_#in~y2.base|) |func_to_recursive_line_31_to_42_0_#in~y2.offset|) (* (select (select |#memory_int#1| |func_to_recursive_line_31_to_42_0_#in~x2.base|) |func_to_recursive_line_31_to_42_0_#in~x2.offset|) (select (select |old(#memory_int#5)| |func_to_recursive_line_31_to_42_0_#in~y1.base|) |func_to_recursive_line_31_to_42_0_#in~y1.offset|))))) (and (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#5| |old(#memory_int#5)|) (= |#memory_int#3| |old(#memory_int#3)|)) (forall ((|v_ULTIMATE.start_main_~#x2~0#1.base_BEFORE_CALL_7| Int)) (= (select (select |#memory_int#1| |v_ULTIMATE.start_main_~#x2~0#1.base_BEFORE_CALL_7|) 0) 0))) [2023-11-29 03:42:59,566 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_31_to_42_0EXIT(lines 52 82) no Hoare annotation was computed. [2023-11-29 03:42:59,566 INFO L899 garLoopResultBuilder]: For program point L27(lines 27 33) no Hoare annotation was computed. [2023-11-29 03:42:59,566 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 25 34) the Hoare annotation is: true [2023-11-29 03:42:59,566 INFO L899 garLoopResultBuilder]: For program point L27-2(lines 25 34) no Hoare annotation was computed. [2023-11-29 03:42:59,566 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 25 34) no Hoare annotation was computed. [2023-11-29 03:42:59,567 INFO L899 garLoopResultBuilder]: For program point L98-1(line 98) no Hoare annotation was computed. [2023-11-29 03:42:59,567 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:42:59,567 INFO L895 garLoopResultBuilder]: At program point L94(line 94) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#x2~0#1.offset| 0) (= |ULTIMATE.start_main_~#x1~0#1.offset| 0) (= |ULTIMATE.start_main_~#y3~0#1.offset| 0) (= |ULTIMATE.start_main_~#y1~0#1.offset| 0) (= (select (select |#memory_int#1| |ULTIMATE.start_main_~#x2~0#1.base|) 0) |ULTIMATE.start_main_#t~mem19#1|) (= |ULTIMATE.start_main_~#y2~0#1.offset| 0)) [2023-11-29 03:42:59,567 INFO L895 garLoopResultBuilder]: At program point L93(line 93) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#x2~0#1.offset| 0) (= |ULTIMATE.start_main_~#x1~0#1.offset| 0) (= |ULTIMATE.start_main_~#y3~0#1.offset| 0) (= |ULTIMATE.start_main_~#y1~0#1.offset| 0) (= |ULTIMATE.start_main_~#y2~0#1.offset| 0)) [2023-11-29 03:42:59,567 INFO L899 garLoopResultBuilder]: For program point L94-1(line 94) no Hoare annotation was computed. [2023-11-29 03:42:59,567 INFO L899 garLoopResultBuilder]: For program point L93-1(line 93) no Hoare annotation was computed. [2023-11-29 03:42:59,567 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:42:59,567 INFO L895 garLoopResultBuilder]: At program point L99(line 99) the Hoare annotation is: (and (= (select (select |#memory_int#4| |ULTIMATE.start_main_~#x1~0#1.base|) 0) (+ (* (select (select |#memory_int#1| |ULTIMATE.start_main_~#x2~0#1.base|) 0) (select (select |#memory_int#5| |ULTIMATE.start_main_~#y1~0#1.base|) 0)) (select (select |#memory_int#3| |ULTIMATE.start_main_~#y2~0#1.base|) 0))) (= |ULTIMATE.start_main_~#x2~0#1.offset| 0) (= (+ (* |ULTIMATE.start_main_#t~mem22#1| |ULTIMATE.start_main_#t~mem21#1|) |ULTIMATE.start_main_#t~mem23#1|) |ULTIMATE.start_main_#t~mem24#1|) (= |ULTIMATE.start_main_~#x1~0#1.offset| 0) (= |ULTIMATE.start_main_~#y3~0#1.offset| 0) (= |ULTIMATE.start_main_~#y1~0#1.offset| 0) (= |ULTIMATE.start_main_~#y2~0#1.offset| 0)) [2023-11-29 03:42:59,567 INFO L895 garLoopResultBuilder]: At program point L98(line 98) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#x2~0#1.offset| 0) (= |ULTIMATE.start_main_~#x1~0#1.offset| 0) (= |ULTIMATE.start_main_~#y3~0#1.offset| 0) (= |ULTIMATE.start_main_~#y1~0#1.offset| 0) (= (select (select |#memory_int#4| |ULTIMATE.start_main_~#x1~0#1.base|) 0) (select (select |#memory_int#2| |ULTIMATE.start_main_~#y3~0#1.base|) 0)) (not (= (select (select |#memory_int#1| |ULTIMATE.start_main_~#x2~0#1.base|) 0) 0)) (= (select (select |#memory_int#3| |ULTIMATE.start_main_~#y2~0#1.base|) 0) 0) (= |ULTIMATE.start_main_~#y2~0#1.offset| 0) (= 0 (select (select |#memory_int#5| |ULTIMATE.start_main_~#y1~0#1.base|) 0))) [2023-11-29 03:42:59,568 INFO L899 garLoopResultBuilder]: For program point L99-1(line 99) no Hoare annotation was computed. [2023-11-29 03:42:59,568 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 36 50) no Hoare annotation was computed. [2023-11-29 03:42:59,568 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 36 50) the Hoare annotation is: true [2023-11-29 03:42:59,568 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 43) no Hoare annotation was computed. [2023-11-29 03:42:59,568 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 48) no Hoare annotation was computed. [2023-11-29 03:42:59,568 INFO L899 garLoopResultBuilder]: For program point L38-2(lines 36 50) no Hoare annotation was computed. [2023-11-29 03:42:59,568 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2023-11-29 03:42:59,571 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:59,573 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:42:59,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:42:59 BoogieIcfgContainer [2023-11-29 03:42:59,577 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:42:59,578 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:42:59,578 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:42:59,578 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:42:59,579 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:39:30" (3/4) ... [2023-11-29 03:42:59,580 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 03:42:59,584 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_31_to_42_0 [2023-11-29 03:42:59,584 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-29 03:42:59,584 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 03:42:59,589 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-11-29 03:42:59,589 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 03:42:59,589 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 03:42:59,590 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 03:42:59,677 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:42:59,678 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 03:42:59,678 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:42:59,679 INFO L158 Benchmark]: Toolchain (without parser) took 209929.81ms. Allocated memory was 199.2MB in the beginning and 308.3MB in the end (delta: 109.1MB). Free memory was 132.1MB in the beginning and 202.0MB in the end (delta: -70.0MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2023-11-29 03:42:59,679 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 199.2MB. Free memory was 173.2MB in the beginning and 173.0MB in the end (delta: 176.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:42:59,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.20ms. Allocated memory is still 199.2MB. Free memory was 131.9MB in the beginning and 169.5MB in the end (delta: -37.7MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2023-11-29 03:42:59,680 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.29ms. Allocated memory is still 199.2MB. Free memory was 169.5MB in the beginning and 168.5MB in the end (delta: 992.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:42:59,680 INFO L158 Benchmark]: Boogie Preprocessor took 49.50ms. Allocated memory is still 199.2MB. Free memory was 168.5MB in the beginning and 166.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:42:59,680 INFO L158 Benchmark]: RCFGBuilder took 413.23ms. Allocated memory is still 199.2MB. Free memory was 166.4MB in the beginning and 149.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 03:42:59,681 INFO L158 Benchmark]: TraceAbstraction took 209005.77ms. Allocated memory was 199.2MB in the beginning and 308.3MB in the end (delta: 109.1MB). Free memory was 148.6MB in the beginning and 207.3MB in the end (delta: -58.7MB). Peak memory consumption was 166.3MB. Max. memory is 16.1GB. [2023-11-29 03:42:59,681 INFO L158 Benchmark]: Witness Printer took 100.13ms. Allocated memory is still 308.3MB. Free memory was 207.3MB in the beginning and 202.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:42:59,683 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 199.2MB. Free memory was 173.2MB in the beginning and 173.0MB in the end (delta: 176.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.20ms. Allocated memory is still 199.2MB. Free memory was 131.9MB in the beginning and 169.5MB in the end (delta: -37.7MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.29ms. Allocated memory is still 199.2MB. Free memory was 169.5MB in the beginning and 168.5MB in the end (delta: 992.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.50ms. Allocated memory is still 199.2MB. Free memory was 168.5MB in the beginning and 166.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.23ms. Allocated memory is still 199.2MB. Free memory was 166.4MB in the beginning and 149.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 209005.77ms. Allocated memory was 199.2MB in the beginning and 308.3MB in the end (delta: 109.1MB). Free memory was 148.6MB in the beginning and 207.3MB in the end (delta: -58.7MB). Peak memory consumption was 166.3MB. Max. memory is 16.1GB. * Witness Printer took 100.13ms. Allocated memory is still 308.3MB. Free memory was 207.3MB in the beginning and 202.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 42]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 208.9s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 35.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 26.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 226 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 221 mSDsluCounter, 797 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 675 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2751 IncrementalHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 122 mSDtfsCounter, 2751 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 519 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1658 ImplicationChecksByTransitivity, 153.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=4, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 36 PreInvPairs, 51 NumberOfFragments, 675 HoareAnnotationTreeSize, 36 FomulaSimplifications, 395 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 2593 FormulaSimplificationTreeSizeReductionInter, 26.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 143.3s InterpolantComputationTime, 358 NumberOfCodeBlocks, 358 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 389 ConstructedInterpolants, 45 QuantifiedInterpolants, 6441 SizeOfPredicates, 304 NumberOfNonLiveVariables, 2435 ConjunctsInSsa, 1028 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 170/257 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 03:42:59,891 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-11-29 03:42:59,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98904e06-15ae-489c-aa3d-f0122d9c6cda/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE