./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme --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 de989290354f3dc4a33e8016ac19134bd2d52924bea893dcc22d1da9ef4d1086 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:49,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:49,592 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:57:49,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:49,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:49,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:49,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:49,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:49,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:49,670 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:49,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:49,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:49,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:49,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:49,675 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:49,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:49,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:57:49,677 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:49,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:57:49,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:49,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:49,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:57:49,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:49,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:57:49,680 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:49,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:57:49,680 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:49,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:49,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:49,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:49,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:49,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:49,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:49,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:49,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:57:49,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:57:49,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:57:49,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:49,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:49,693 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:57:49,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:49,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:49,693 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_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de989290354f3dc4a33e8016ac19134bd2d52924bea893dcc22d1da9ef4d1086 [2023-11-26 11:57:50,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:50,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:50,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:50,108 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:50,109 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:50,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i [2023-11-26 11:57:53,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:53,842 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:53,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i [2023-11-26 11:57:53,858 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/data/88623eaf5/2f1b6ef219124cdf942a2bda33857bc2/FLAG600286716 [2023-11-26 11:57:53,873 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/data/88623eaf5/2f1b6ef219124cdf942a2bda33857bc2 [2023-11-26 11:57:53,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:53,877 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:53,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:53,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:53,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:53,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:53" (1/1) ... [2023-11-26 11:57:53,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9cf950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:53, skipping insertion in model container [2023-11-26 11:57:53,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:53" (1/1) ... [2023-11-26 11:57:53,948 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:54,116 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_0da08522-e024-4f44-bcd3-18bea8ab9090/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i[916,929] [2023-11-26 11:57:54,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:54,248 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:54,263 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_0da08522-e024-4f44-bcd3-18bea8ab9090/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-64.i[916,929] [2023-11-26 11:57:54,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:54,400 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:54,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54 WrapperNode [2023-11-26 11:57:54,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:54,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:54,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:54,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:54,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,481 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 270 [2023-11-26 11:57:54,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:54,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:54,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:54,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:54,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,501 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,522 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:57:54,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:54,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:54,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:54,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:54,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (1/1) ... [2023-11-26 11:57:54,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:54,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:54,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:54,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:57:54,653 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:57:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:57:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:54,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:54,753 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:54,756 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:55,344 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:55,382 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:55,383 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:57:55,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:55 BoogieIcfgContainer [2023-11-26 11:57:55,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:55,421 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:55,421 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:55,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:55,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:53" (1/3) ... [2023-11-26 11:57:55,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c172e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:55, skipping insertion in model container [2023-11-26 11:57:55,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:54" (2/3) ... [2023-11-26 11:57:55,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c172e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:55, skipping insertion in model container [2023-11-26 11:57:55,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:55" (3/3) ... [2023-11-26 11:57:55,432 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-64.i [2023-11-26 11:57:55,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:55,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:57:55,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:55,545 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;@7444a144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:55,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:57:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 68 states have (on average 1.5147058823529411) internal successors, (103), 69 states have internal predecessors, (103), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 11:57:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-26 11:57:55,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:55,583 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:55,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:55,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash 307928346, now seen corresponding path program 1 times [2023-11-26 11:57:55,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:55,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708448191] [2023-11-26 11:57:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:55,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:55,912 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:55,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583656807] [2023-11-26 11:57:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:55,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:55,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:55,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:55,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:57:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:56,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:57:56,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 600 proven. 18 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2023-11-26 11:57:56,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 66 proven. 18 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-26 11:57:56,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708448191] [2023-11-26 11:57:56,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583656807] [2023-11-26 11:57:56,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583656807] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:56,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:56,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 11:57:56,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18724767] [2023-11-26 11:57:56,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:56,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:57:56,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:57:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:56,926 INFO L87 Difference]: Start difference. First operand has 100 states, 68 states have (on average 1.5147058823529411) internal successors, (103), 69 states have internal predecessors, (103), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-26 11:57:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:57,379 INFO L93 Difference]: Finished difference Result 205 states and 359 transitions. [2023-11-26 11:57:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:57:57,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 185 [2023-11-26 11:57:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:57,398 INFO L225 Difference]: With dead ends: 205 [2023-11-26 11:57:57,398 INFO L226 Difference]: Without dead ends: 106 [2023-11-26 11:57:57,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:57:57,409 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 194 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:57,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 365 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:57:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-26 11:57:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2023-11-26 11:57:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 70 states have internal predecessors, (99), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 11:57:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 157 transitions. [2023-11-26 11:57:57,486 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 157 transitions. Word has length 185 [2023-11-26 11:57:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:57,488 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 157 transitions. [2023-11-26 11:57:57,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-26 11:57:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 157 transitions. [2023-11-26 11:57:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-26 11:57:57,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:57,497 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:57,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:57:57,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:57:57,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:57,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1809323880, now seen corresponding path program 1 times [2023-11-26 11:57:57,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:57,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306457409] [2023-11-26 11:57:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:57,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:57,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339270150] [2023-11-26 11:57:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:57,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:57,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:57:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:58,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-26 11:57:58,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 855 proven. 252 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-11-26 11:58:01,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:04,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:04,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306457409] [2023-11-26 11:58:04,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:04,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339270150] [2023-11-26 11:58:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339270150] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:04,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:04,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2023-11-26 11:58:04,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208513153] [2023-11-26 11:58:04,362 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:04,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-26 11:58:04,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-26 11:58:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1024, Unknown=0, NotChecked=0, Total=1332 [2023-11-26 11:58:04,367 INFO L87 Difference]: Start difference. First operand 102 states and 157 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 21 states have internal predecessors, (67), 7 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2023-11-26 11:58:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:08,114 INFO L93 Difference]: Finished difference Result 503 states and 745 transitions. [2023-11-26 11:58:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-26 11:58:08,115 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 21 states have internal predecessors, (67), 7 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 188 [2023-11-26 11:58:08,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:08,129 INFO L225 Difference]: With dead ends: 503 [2023-11-26 11:58:08,133 INFO L226 Difference]: Without dead ends: 402 [2023-11-26 11:58:08,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=928, Invalid=2978, Unknown=0, NotChecked=0, Total=3906 [2023-11-26 11:58:08,143 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 824 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:08,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1553 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-26 11:58:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-26 11:58:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 336. [2023-11-26 11:58:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 225 states have (on average 1.3288888888888888) internal successors, (299), 227 states have internal predecessors, (299), 96 states have call successors, (96), 14 states have call predecessors, (96), 14 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 11:58:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 491 transitions. [2023-11-26 11:58:08,294 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 491 transitions. Word has length 188 [2023-11-26 11:58:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:08,296 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 491 transitions. [2023-11-26 11:58:08,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 21 states have internal predecessors, (67), 7 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2023-11-26 11:58:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 491 transitions. [2023-11-26 11:58:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-26 11:58:08,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:08,302 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:08,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:08,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:08,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:08,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:08,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2113216920, now seen corresponding path program 1 times [2023-11-26 11:58:08,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:08,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901972113] [2023-11-26 11:58:08,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:08,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:08,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:08,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340924988] [2023-11-26 11:58:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:08,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:08,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:08,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:08,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:58:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:09,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-26 11:58:09,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 855 proven. 252 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-11-26 11:58:11,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 102 proven. 141 refuted. 0 times theorem prover too weak. 1381 trivial. 0 not checked. [2023-11-26 11:58:13,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901972113] [2023-11-26 11:58:13,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:13,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340924988] [2023-11-26 11:58:13,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340924988] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:13,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:58:13,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 36 [2023-11-26 11:58:13,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674544405] [2023-11-26 11:58:13,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:13,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-26 11:58:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:13,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-26 11:58:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2023-11-26 11:58:13,306 INFO L87 Difference]: Start difference. First operand 336 states and 491 transitions. Second operand has 36 states, 34 states have (on average 3.088235294117647) internal successors, (105), 31 states have internal predecessors, (105), 11 states have call successors, (48), 7 states have call predecessors, (48), 11 states have return successors, (49), 11 states have call predecessors, (49), 11 states have call successors, (49) [2023-11-26 11:58:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:25,539 INFO L93 Difference]: Finished difference Result 1381 states and 1913 transitions. [2023-11-26 11:58:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-11-26 11:58:25,540 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 3.088235294117647) internal successors, (105), 31 states have internal predecessors, (105), 11 states have call successors, (48), 7 states have call predecessors, (48), 11 states have return successors, (49), 11 states have call predecessors, (49), 11 states have call successors, (49) Word has length 189 [2023-11-26 11:58:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:25,554 INFO L225 Difference]: With dead ends: 1381 [2023-11-26 11:58:25,554 INFO L226 Difference]: Without dead ends: 1228 [2023-11-26 11:58:25,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7760 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=4712, Invalid=17044, Unknown=0, NotChecked=0, Total=21756 [2023-11-26 11:58:25,566 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1920 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 3381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:25,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1939 Valid, 1696 Invalid, 3381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [790 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-26 11:58:25,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2023-11-26 11:58:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 371. [2023-11-26 11:58:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 294 states have (on average 1.4625850340136055) internal successors, (430), 294 states have internal predecessors, (430), 58 states have call successors, (58), 18 states have call predecessors, (58), 18 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-26 11:58:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 546 transitions. [2023-11-26 11:58:25,729 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 546 transitions. Word has length 189 [2023-11-26 11:58:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:25,730 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 546 transitions. [2023-11-26 11:58:25,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 3.088235294117647) internal successors, (105), 31 states have internal predecessors, (105), 11 states have call successors, (48), 7 states have call predecessors, (48), 11 states have return successors, (49), 11 states have call predecessors, (49), 11 states have call successors, (49) [2023-11-26 11:58:25,731 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 546 transitions. [2023-11-26 11:58:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-26 11:58:25,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:25,735 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:25,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:25,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:25,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:25,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash 119072214, now seen corresponding path program 1 times [2023-11-26 11:58:25,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:25,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360954805] [2023-11-26 11:58:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:25,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:25,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:25,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593195788] [2023-11-26 11:58:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:25,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:25,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:25,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:26,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0da08522-e024-4f44-bcd3-18bea8ab9090/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:58:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:26,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-26 11:58:26,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 855 proven. 252 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-11-26 11:58:31,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:33,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360954805] [2023-11-26 11:58:33,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593195788] [2023-11-26 11:58:33,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593195788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:33,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:33,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-11-26 11:58:33,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731648418] [2023-11-26 11:58:33,635 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:33,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 11:58:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 11:58:33,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2023-11-26 11:58:33,638 INFO L87 Difference]: Start difference. First operand 371 states and 546 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 22 states have internal predecessors, (68), 7 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29)