./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.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_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/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_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/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_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/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 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:46:33,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:46:33,605 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:46:33,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:46:33,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:46:33,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:46:33,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:46:33,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:46:33,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:46:33,634 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:46:33,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:46:33,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:46:33,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:46:33,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:46:33,637 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:46:33,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:46:33,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:46:33,639 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:46:33,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:46:33,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:46:33,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:46:33,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:46:33,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:46:33,642 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:46:33,642 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:46:33,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:46:33,643 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:46:33,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:46:33,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:46:33,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:46:33,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:46:33,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:46:33,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:46:33,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:46:33,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:46:33,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:46:33,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:46:33,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:46:33,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:46:33,647 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:46:33,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:46:33,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:46:33,647 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_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a [2023-11-29 06:46:33,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:46:33,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:46:33,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:46:33,861 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:46:33,861 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:46:33,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2023-11-29 06:46:36,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:46:36,810 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:46:36,810 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2023-11-29 06:46:36,818 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/data/35b411f3a/2dddfcfa052d448aabd68d0730dbdaab/FLAG54eadef13 [2023-11-29 06:46:36,833 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/data/35b411f3a/2dddfcfa052d448aabd68d0730dbdaab [2023-11-29 06:46:36,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:46:36,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:46:36,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:46:36,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:46:36,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:46:36,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:36" (1/1) ... [2023-11-29 06:46:36,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2324cfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:36, skipping insertion in model container [2023-11-29 06:46:36,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:36" (1/1) ... [2023-11-29 06:46:36,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:46:37,022 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_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2023-11-29 06:46:37,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:46:37,048 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:46:37,061 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_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2023-11-29 06:46:37,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:46:37,082 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:46:37,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37 WrapperNode [2023-11-29 06:46:37,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:46:37,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:46:37,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:46:37,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:46:37,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,117 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-11-29 06:46:37,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:46:37,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:46:37,119 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:46:37,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:46:37,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,144 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-29 06:46:37,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:46:37,156 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:46:37,156 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:46:37,156 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:46:37,157 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (1/1) ... [2023-11-29 06:46:37,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:46:37,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:37,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:37,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:46:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:46:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:46:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:46:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:46:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:46:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 06:46:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 06:46:37,296 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:46:37,299 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:46:37,434 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:46:37,462 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:46:37,462 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:46:37,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:37 BoogieIcfgContainer [2023-11-29 06:46:37,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:46:37,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:46:37,465 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:46:37,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:46:37,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:46:36" (1/3) ... [2023-11-29 06:46:37,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347915c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:46:37, skipping insertion in model container [2023-11-29 06:46:37,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:37" (2/3) ... [2023-11-29 06:46:37,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347915c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:46:37, skipping insertion in model container [2023-11-29 06:46:37,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:37" (3/3) ... [2023-11-29 06:46:37,471 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2023-11-29 06:46:37,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:46:37,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:46:37,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:46:37,532 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;@6b1027be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:46:37,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:46:37,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:46:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 06:46:37,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:37,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:37,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:46:37,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:37,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1830609328, now seen corresponding path program 1 times [2023-11-29 06:46:37,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527828463] [2023-11-29 06:46:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:37,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:37,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527828463] [2023-11-29 06:46:37,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527828463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:37,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:37,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:46:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473058809] [2023-11-29 06:46:37,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:37,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:46:37,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:46:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:46:37,742 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:37,771 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2023-11-29 06:46:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:46:37,774 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 06:46:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:37,781 INFO L225 Difference]: With dead ends: 44 [2023-11-29 06:46:37,781 INFO L226 Difference]: Without dead ends: 21 [2023-11-29 06:46:37,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:46:37,788 INFO L413 NwaCegarLoop]: 29 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, 29 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 06:46:37,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:46:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-29 06:46:37,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-29 06:46:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 06:46:37,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2023-11-29 06:46:37,825 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 8 [2023-11-29 06:46:37,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:37,826 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2023-11-29 06:46:37,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2023-11-29 06:46:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 06:46:37,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:37,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:37,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:46:37,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:46:37,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash -55601966, now seen corresponding path program 1 times [2023-11-29 06:46:37,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:37,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41314037] [2023-11-29 06:46:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:37,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:37,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:37,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41314037] [2023-11-29 06:46:37,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41314037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:37,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:37,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:46:37,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352524084] [2023-11-29 06:46:37,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:37,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:46:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:46:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:46:37,972 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:38,034 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2023-11-29 06:46:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:46:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 06:46:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:38,035 INFO L225 Difference]: With dead ends: 34 [2023-11-29 06:46:38,035 INFO L226 Difference]: Without dead ends: 32 [2023-11-29 06:46:38,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:46:38,037 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:38,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 82 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:46:38,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-29 06:46:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2023-11-29 06:46:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 06:46:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-11-29 06:46:38,048 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 8 [2023-11-29 06:46:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:38,048 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-11-29 06:46:38,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-11-29 06:46:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:46:38,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:38,049 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:38,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:46:38,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:46:38,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:38,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1587104181, now seen corresponding path program 1 times [2023-11-29 06:46:38,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:38,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056794986] [2023-11-29 06:46:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:38,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 06:46:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:38,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:38,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056794986] [2023-11-29 06:46:38,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056794986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:38,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:38,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:46:38,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058137848] [2023-11-29 06:46:38,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:38,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:46:38,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:38,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:46:38,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:46:38,160 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 06:46:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:38,214 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2023-11-29 06:46:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:46:38,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-29 06:46:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:38,215 INFO L225 Difference]: With dead ends: 38 [2023-11-29 06:46:38,216 INFO L226 Difference]: Without dead ends: 36 [2023-11-29 06:46:38,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:46:38,217 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:38,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 78 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:46:38,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-29 06:46:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2023-11-29 06:46:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 06:46:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-11-29 06:46:38,226 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 13 [2023-11-29 06:46:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:38,227 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-11-29 06:46:38,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 06:46:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-11-29 06:46:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:46:38,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:38,228 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:38,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:46:38,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:46:38,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1972613170, now seen corresponding path program 1 times [2023-11-29 06:46:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:38,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462137455] [2023-11-29 06:46:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:38,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:38,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:46:38,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488118503] [2023-11-29 06:46:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:38,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:38,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:38,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:38,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:46:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:46:38,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:46:38,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:46:38,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:38,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462137455] [2023-11-29 06:46:38,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:46:38,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488118503] [2023-11-29 06:46:38,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488118503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:38,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:46:38,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-29 06:46:38,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389723387] [2023-11-29 06:46:38,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:38,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:46:38,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:46:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:46:38,591 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:46:42,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 06:46:42,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:42,808 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2023-11-29 06:46:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:46:42,808 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 18 [2023-11-29 06:46:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:42,811 INFO L225 Difference]: With dead ends: 64 [2023-11-29 06:46:42,811 INFO L226 Difference]: Without dead ends: 50 [2023-11-29 06:46:42,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:46:42,813 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:42,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 96 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 06:46:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-29 06:46:42,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-29 06:46:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 32 states have internal predecessors, (34), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 06:46:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2023-11-29 06:46:42,828 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 18 [2023-11-29 06:46:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:42,828 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2023-11-29 06:46:42,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:46:42,829 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2023-11-29 06:46:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:46:42,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:42,830 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:42,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:43,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:43,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:46:43,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:43,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1810344840, now seen corresponding path program 1 times [2023-11-29 06:46:43,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:43,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017463762] [2023-11-29 06:46:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:43,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:43,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:46:43,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856484707] [2023-11-29 06:46:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:43,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:43,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:43,049 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:43,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:46:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:43,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:46:43,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 06:46:43,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 06:46:43,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:43,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017463762] [2023-11-29 06:46:43,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:46:43,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856484707] [2023-11-29 06:46:43,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856484707] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:43,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:46:43,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-29 06:46:43,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792548367] [2023-11-29 06:46:43,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:43,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:46:43,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:43,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:46:43,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:46:43,311 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 06:46:43,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:43,436 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2023-11-29 06:46:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:46:43,437 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 25 [2023-11-29 06:46:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:43,438 INFO L225 Difference]: With dead ends: 65 [2023-11-29 06:46:43,438 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 06:46:43,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:46:43,440 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:43,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 77 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:46:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 06:46:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2023-11-29 06:46:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 38 states have internal predecessors, (40), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:46:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2023-11-29 06:46:43,456 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 25 [2023-11-29 06:46:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:43,457 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2023-11-29 06:46:43,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 06:46:43,457 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2023-11-29 06:46:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 06:46:43,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:43,459 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:43,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:46:43,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:43,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:46:43,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1460518785, now seen corresponding path program 1 times [2023-11-29 06:46:43,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:43,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965506443] [2023-11-29 06:46:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:43,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:46:43,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288278657] [2023-11-29 06:46:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:43,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:43,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:43,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:43,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:46:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:43,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 06:46:43,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-29 06:46:44,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-29 06:46:45,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:45,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965506443] [2023-11-29 06:46:45,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:46:45,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288278657] [2023-11-29 06:46:45,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288278657] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:45,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:46:45,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 06:46:45,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871676589] [2023-11-29 06:46:45,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:45,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:46:45,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:45,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:46:45,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:46:45,541 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-29 06:47:02,538 WARN L293 SmtUtils]: Spent 16.86s on a formula simplification. DAG size of input: 50 DAG size of output: 48 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:47:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:03,369 INFO L93 Difference]: Finished difference Result 141 states and 192 transitions. [2023-11-29 06:47:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:47:03,370 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 55 [2023-11-29 06:47:03,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:03,371 INFO L225 Difference]: With dead ends: 141 [2023-11-29 06:47:03,372 INFO L226 Difference]: Without dead ends: 110 [2023-11-29 06:47:03,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:47:03,373 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 60 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:03,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 168 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:47:03,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-29 06:47:03,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2023-11-29 06:47:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 24 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 06:47:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2023-11-29 06:47:03,405 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 55 [2023-11-29 06:47:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:03,405 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2023-11-29 06:47:03,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-29 06:47:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2023-11-29 06:47:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 06:47:03,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:03,408 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:03,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:47:03,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 06:47:03,609 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:47:03,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash -814878683, now seen corresponding path program 1 times [2023-11-29 06:47:03,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:47:03,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563803171] [2023-11-29 06:47:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:47:03,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:47:03,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133951767] [2023-11-29 06:47:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:03,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:47:03,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:47:03,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:47:03,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:47:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:03,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 06:47:03,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-29 06:47:03,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-29 06:47:04,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:47:04,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563803171] [2023-11-29 06:47:04,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:47:04,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133951767] [2023-11-29 06:47:04,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133951767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:47:04,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:47:04,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-11-29 06:47:04,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525700113] [2023-11-29 06:47:04,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:47:04,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:47:04,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:47:04,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:47:04,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:47:04,608 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 16 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-11-29 06:47:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:05,171 INFO L93 Difference]: Finished difference Result 160 states and 209 transitions. [2023-11-29 06:47:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:47:05,171 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 66 [2023-11-29 06:47:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:05,173 INFO L225 Difference]: With dead ends: 160 [2023-11-29 06:47:05,174 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 06:47:05,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:47:05,175 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:05,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 168 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:47:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 06:47:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 100. [2023-11-29 06:47:05,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 65 states have internal predecessors, (71), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 06:47:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2023-11-29 06:47:05,212 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 66 [2023-11-29 06:47:05,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:05,212 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2023-11-29 06:47:05,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-11-29 06:47:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2023-11-29 06:47:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 06:47:05,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:05,215 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:05,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:47:05,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:47:05,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:47:05,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1399001704, now seen corresponding path program 1 times [2023-11-29 06:47:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:47:05,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242517334] [2023-11-29 06:47:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:05,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:47:05,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:47:05,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643044696] [2023-11-29 06:47:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:05,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:47:05,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:47:05,424 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:47:05,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:47:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:05,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 06:47:05,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-29 06:47:05,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-29 06:47:06,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:47:06,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242517334] [2023-11-29 06:47:06,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:47:06,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643044696] [2023-11-29 06:47:06,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643044696] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:47:06,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:47:06,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-11-29 06:47:06,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575233221] [2023-11-29 06:47:06,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:47:06,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:47:06,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:47:06,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:47:06,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:47:06,083 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 16 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2023-11-29 06:47:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:06,511 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2023-11-29 06:47:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:47:06,511 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 71 [2023-11-29 06:47:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:06,513 INFO L225 Difference]: With dead ends: 116 [2023-11-29 06:47:06,513 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 06:47:06,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:47:06,514 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:06,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 158 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:47:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 06:47:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-29 06:47:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 56 states have internal predecessors, (59), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 06:47:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions. [2023-11-29 06:47:06,538 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 71 [2023-11-29 06:47:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:06,538 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions. [2023-11-29 06:47:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2023-11-29 06:47:06,539 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions. [2023-11-29 06:47:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 06:47:06,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:06,541 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:06,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:47:06,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 06:47:06,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:47:06,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2065528550, now seen corresponding path program 1 times [2023-11-29 06:47:06,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:47:06,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635999923] [2023-11-29 06:47:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:06,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:47:06,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:47:06,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725527345] [2023-11-29 06:47:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:06,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:47:06,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:47:06,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:47:06,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:47:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:06,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:47:06,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-29 06:47:06,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:47:06,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:47:06,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635999923] [2023-11-29 06:47:06,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:47:06,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725527345] [2023-11-29 06:47:06,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725527345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:47:06,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:47:06,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:47:06,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077900412] [2023-11-29 06:47:06,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:47:06,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:47:06,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:47:06,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:47:06,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:47:06,939 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:47:07,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:07,026 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2023-11-29 06:47:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:47:07,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 85 [2023-11-29 06:47:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:07,028 INFO L225 Difference]: With dead ends: 115 [2023-11-29 06:47:07,028 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 06:47:07,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:47:07,030 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:07,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:47:07,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 06:47:07,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2023-11-29 06:47:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 51 states have internal predecessors, (53), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 06:47:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2023-11-29 06:47:07,055 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 85 [2023-11-29 06:47:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:07,056 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2023-11-29 06:47:07,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:47:07,056 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2023-11-29 06:47:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 06:47:07,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:07,058 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:07,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 06:47:07,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:47:07,262 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:47:07,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash -376584808, now seen corresponding path program 2 times [2023-11-29 06:47:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:47:07,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435523527] [2023-11-29 06:47:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:07,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:47:07,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:47:07,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587530677] [2023-11-29 06:47:07,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:47:07,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:47:07,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:47:07,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:47:07,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:47:07,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:47:07,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:47:07,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:47:07,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-11-29 06:47:07,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:47:07,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:47:07,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435523527] [2023-11-29 06:47:07,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:47:07,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587530677] [2023-11-29 06:47:07,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587530677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:47:07,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:47:07,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:47:07,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787544443] [2023-11-29 06:47:07,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:47:07,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:47:07,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:47:07,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:47:07,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:47:07,431 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 06:47:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:07,485 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2023-11-29 06:47:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:47:07,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 85 [2023-11-29 06:47:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:07,486 INFO L225 Difference]: With dead ends: 77 [2023-11-29 06:47:07,486 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 06:47:07,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:47:07,488 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:07,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:47:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 06:47:07,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 06:47:07,489 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 06:47:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 06:47:07,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2023-11-29 06:47:07,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:07,489 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 06:47:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 06:47:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 06:47:07,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 06:47:07,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 06:47:07,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:47:07,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:47:07,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 06:47:08,600 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2023-11-29 06:47:08,600 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 44 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~A~0#1|) .cse2) (and .cse0 .cse1 .cse3 .cse4 .cse2) (and (= 2 |ULTIMATE.start_main_~p~0#1|) .cse3 .cse4 .cse2 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2023-11-29 06:47:08,600 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-11-29 06:47:08,601 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (and (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) [2023-11-29 06:47:08,601 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse4 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= 2 |ULTIMATE.start_main_~p~0#1|) .cse0 .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2023-11-29 06:47:08,601 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~A~0#1|) .cse2) (and .cse0 .cse1 .cse3 .cse4 .cse2) (and (= 2 |ULTIMATE.start_main_~p~0#1|) .cse3 .cse4 .cse2 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2023-11-29 06:47:08,601 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-29 06:47:08,601 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~A~0#1|) .cse2) (and .cse0 .cse1 .cse3 .cse4 .cse2) (and (= 2 |ULTIMATE.start_main_~p~0#1|) .cse3 .cse4 .cse2 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2023-11-29 06:47:08,601 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2023-11-29 06:47:08,601 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 06:47:08,601 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1))) [2023-11-29 06:47:08,601 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2023-11-29 06:47:08,601 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 06:47:08,601 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse4 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= 2 |ULTIMATE.start_main_~p~0#1|) .cse0 .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2023-11-29 06:47:08,602 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-11-29 06:47:08,602 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse4 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= 2 |ULTIMATE.start_main_~p~0#1|) .cse0 .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2023-11-29 06:47:08,602 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse4 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= 2 |ULTIMATE.start_main_~p~0#1|) .cse0 .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2023-11-29 06:47:08,602 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-11-29 06:47:08,602 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-11-29 06:47:08,602 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-11-29 06:47:08,602 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-11-29 06:47:08,602 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-11-29 06:47:08,602 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-11-29 06:47:08,604 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:08,606 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:47:08,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:47:08 BoogieIcfgContainer [2023-11-29 06:47:08,615 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:47:08,615 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:47:08,615 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:47:08,615 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:47:08,616 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:37" (3/4) ... [2023-11-29 06:47:08,617 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 06:47:08,619 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 06:47:08,622 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-29 06:47:08,622 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-29 06:47:08,623 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 06:47:08,623 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 06:47:08,623 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 06:47:08,708 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:47:08,709 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 06:47:08,709 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:47:08,709 INFO L158 Benchmark]: Toolchain (without parser) took 31871.84ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 106.6MB in the beginning and 74.6MB in the end (delta: 31.9MB). Peak memory consumption was 77.7MB. Max. memory is 16.1GB. [2023-11-29 06:47:08,710 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:47:08,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.83ms. Allocated memory is still 159.4MB. Free memory was 106.6MB in the beginning and 95.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:47:08,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.22ms. Allocated memory is still 159.4MB. Free memory was 95.7MB in the beginning and 94.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:47:08,711 INFO L158 Benchmark]: Boogie Preprocessor took 36.99ms. Allocated memory is still 159.4MB. Free memory was 94.3MB in the beginning and 92.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:47:08,711 INFO L158 Benchmark]: RCFGBuilder took 306.66ms. Allocated memory is still 159.4MB. Free memory was 92.2MB in the beginning and 80.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 06:47:08,712 INFO L158 Benchmark]: TraceAbstraction took 31149.34ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 79.7MB in the beginning and 79.9MB in the end (delta: -224.1kB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2023-11-29 06:47:08,712 INFO L158 Benchmark]: Witness Printer took 93.80ms. Allocated memory is still 203.4MB. Free memory was 79.9MB in the beginning and 74.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:47:08,714 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.83ms. Allocated memory is still 159.4MB. Free memory was 106.6MB in the beginning and 95.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.22ms. Allocated memory is still 159.4MB. Free memory was 95.7MB in the beginning and 94.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.99ms. Allocated memory is still 159.4MB. Free memory was 94.3MB in the beginning and 92.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 306.66ms. Allocated memory is still 159.4MB. Free memory was 92.2MB in the beginning and 80.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 31149.34ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 79.7MB in the beginning and 79.9MB in the end (delta: -224.1kB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * Witness Printer took 93.80ms. Allocated memory is still 203.4MB. Free memory was 79.9MB in the beginning and 74.6MB 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: 17]: 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 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.1s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 23.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 997 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 767 mSDsCounter, 181 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1097 IncrementalHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 181 mSolverCounterUnsat, 230 mSDtfsCounter, 1097 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 665 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=6, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 50 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 81 PreInvPairs, 106 NumberOfFragments, 380 HoareAnnotationTreeSize, 81 FomulaSimplifications, 2262 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 1029 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 654 ConstructedInterpolants, 0 QuantifiedInterpolants, 4383 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1119 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 1764/1968 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 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((((d == 1) && (p == 1)) && (q == 1)) && ((r + 1) == A)) && (B == 1)) || (((((d == 1) && (p == 1)) && (q == 0)) && (A == r)) && (B == 1))) || (((((2 == p) && (q == 0)) && (A == r)) && (B == 1)) && (2 == d))) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((d == 1) && (p == 1)) && (A <= 1)) && (q == 0)) && (A == r)) && (B == 1)) && (0 <= A)) || (((((((2 == p) && (A <= 1)) && (q == 0)) && (A == r)) && (B == 1)) && (0 <= A)) && (2 == d))) RESULT: Ultimate proved your program to be correct! [2023-11-29 06:47:08,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b79860f-36a9-4f05-9e7b-4a7c6f208d3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE