./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-98.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_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/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_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-98.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/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_d00a0bdf-05fc-4c15-a63b-2deabb331b10/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 6f9402c7018e79bcd90f9f57f21a87c915654b2dc0bedc517c733595f96920b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:35,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:35,673 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:57:35,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:35,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:35,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:35,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:35,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:35,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:35,743 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:35,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:35,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:35,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:35,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:35,748 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:35,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:35,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:57:35,749 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:35,750 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:57:35,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:35,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:35,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:57:35,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:35,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:57:35,755 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:35,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:57:35,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:35,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:35,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:35,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:35,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:35,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:35,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:35,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:35,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:57:35,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:57:35,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:57:35,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:35,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:35,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:57:35,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:35,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:35,781 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_d00a0bdf-05fc-4c15-a63b-2deabb331b10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f9402c7018e79bcd90f9f57f21a87c915654b2dc0bedc517c733595f96920b4 [2023-11-26 11:57:36,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:36,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:36,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:36,145 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:36,146 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:36,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-98.i [2023-11-26 11:57:39,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:39,629 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:39,651 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-98.i [2023-11-26 11:57:39,664 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/data/89e966ad1/d7bca2fb4c5a4af3bc53656332d04a8d/FLAG325668e13 [2023-11-26 11:57:39,695 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/data/89e966ad1/d7bca2fb4c5a4af3bc53656332d04a8d [2023-11-26 11:57:39,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:39,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:39,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:39,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:39,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:39,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:39" (1/1) ... [2023-11-26 11:57:39,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac1e0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:39, skipping insertion in model container [2023-11-26 11:57:39,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:39" (1/1) ... [2023-11-26 11:57:39,782 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:39,959 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_d00a0bdf-05fc-4c15-a63b-2deabb331b10/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-98.i[916,929] [2023-11-26 11:57:40,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:40,052 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:40,065 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_d00a0bdf-05fc-4c15-a63b-2deabb331b10/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-98.i[916,929] [2023-11-26 11:57:40,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:40,147 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:40,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40 WrapperNode [2023-11-26 11:57:40,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:40,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:40,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:40,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:40,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,225 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 184 [2023-11-26 11:57:40,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:40,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:40,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:40,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:40,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,266 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,287 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 11:57:40,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:40,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:40,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:40,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:40,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (1/1) ... [2023-11-26 11:57:40,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:40,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:40,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:40,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:57:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:57:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:57:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:40,611 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:40,614 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:41,264 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:41,367 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:41,368 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:57:41,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:41 BoogieIcfgContainer [2023-11-26 11:57:41,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:41,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:41,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:41,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:41,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:39" (1/3) ... [2023-11-26 11:57:41,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490f4ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:41, skipping insertion in model container [2023-11-26 11:57:41,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:40" (2/3) ... [2023-11-26 11:57:41,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490f4ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:41, skipping insertion in model container [2023-11-26 11:57:41,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:41" (3/3) ... [2023-11-26 11:57:41,384 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-98.i [2023-11-26 11:57:41,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:41,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:57:41,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:41,486 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;@4ddcbb0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:41,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:57:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 45 states have (on average 1.488888888888889) internal successors, (67), 46 states have internal predecessors, (67), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 11:57:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-26 11:57:41,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:41,518 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:41,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:41,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1178232153, now seen corresponding path program 1 times [2023-11-26 11:57:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:41,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143931171] [2023-11-26 11:57:41,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:41,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:41,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:41,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143931171] [2023-11-26 11:57:41,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:57:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663808490] [2023-11-26 11:57:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:41,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:41,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:41,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:41,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:57:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:42,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:57:42,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-11-26 11:57:42,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663808490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:42,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:42,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:42,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59878934] [2023-11-26 11:57:42,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:42,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:57:42,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:42,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:57:42,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:57:42,286 INFO L87 Difference]: Start difference. First operand has 71 states, 45 states have (on average 1.488888888888889) internal successors, (67), 46 states have internal predecessors, (67), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-26 11:57:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:42,354 INFO L93 Difference]: Finished difference Result 141 states and 248 transitions. [2023-11-26 11:57:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:57:42,357 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2023-11-26 11:57:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:42,370 INFO L225 Difference]: With dead ends: 141 [2023-11-26 11:57:42,370 INFO L226 Difference]: Without dead ends: 69 [2023-11-26 11:57:42,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:57:42,383 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:42,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-26 11:57:42,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-26 11:57:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 11:57:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 108 transitions. [2023-11-26 11:57:42,464 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 108 transitions. Word has length 148 [2023-11-26 11:57:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:42,464 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 108 transitions. [2023-11-26 11:57:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-26 11:57:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 108 transitions. [2023-11-26 11:57:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-26 11:57:42,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:42,480 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:42,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:57:42,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:42,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:42,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:42,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1945756149, now seen corresponding path program 1 times [2023-11-26 11:57:42,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:42,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100750047] [2023-11-26 11:57:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:42,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:42,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:42,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734751062] [2023-11-26 11:57:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:42,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:42,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:42,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:42,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:57:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:43,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:57:43,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 498 proven. 24 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-11-26 11:57:43,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-26 11:57:43,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100750047] [2023-11-26 11:57:43,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734751062] [2023-11-26 11:57:43,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734751062] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:43,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:43,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 11:57:43,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537099078] [2023-11-26 11:57:43,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:43,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:43,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:43,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:43,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:43,450 INFO L87 Difference]: Start difference. First operand 69 states and 108 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-26 11:57:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:43,744 INFO L93 Difference]: Finished difference Result 145 states and 222 transitions. [2023-11-26 11:57:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:57:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 148 [2023-11-26 11:57:43,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:43,749 INFO L225 Difference]: With dead ends: 145 [2023-11-26 11:57:43,750 INFO L226 Difference]: Without dead ends: 77 [2023-11-26 11:57:43,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:57:43,753 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 68 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:43,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 176 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:43,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-26 11:57:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2023-11-26 11:57:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 11:57:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 109 transitions. [2023-11-26 11:57:43,772 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 109 transitions. Word has length 148 [2023-11-26 11:57:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:43,774 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 109 transitions. [2023-11-26 11:57:43,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-26 11:57:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 109 transitions. [2023-11-26 11:57:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-26 11:57:43,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:43,777 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:43,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:43,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:43,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:43,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1683901833, now seen corresponding path program 1 times [2023-11-26 11:57:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:43,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554826217] [2023-11-26 11:57:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:44,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:44,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465869182] [2023-11-26 11:57:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:44,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:44,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:44,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:44,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:57:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:44,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:57:44,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 372 proven. 51 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-11-26 11:57:45,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-26 11:57:45,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:45,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554826217] [2023-11-26 11:57:45,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:45,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465869182] [2023-11-26 11:57:45,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465869182] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:45,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:45,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-26 11:57:45,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384325169] [2023-11-26 11:57:45,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:45,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:57:45,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:45,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:57:45,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:57:45,445 INFO L87 Difference]: Start difference. First operand 73 states and 109 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 4 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2023-11-26 11:57:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:46,250 INFO L93 Difference]: Finished difference Result 262 states and 388 transitions. [2023-11-26 11:57:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:57:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 4 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) Word has length 149 [2023-11-26 11:57:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:46,255 INFO L225 Difference]: With dead ends: 262 [2023-11-26 11:57:46,255 INFO L226 Difference]: Without dead ends: 190 [2023-11-26 11:57:46,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:57:46,258 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 387 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:46,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 309 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:57:46,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-26 11:57:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 125. [2023-11-26 11:57:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 46 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-26 11:57:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 181 transitions. [2023-11-26 11:57:46,299 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 181 transitions. Word has length 149 [2023-11-26 11:57:46,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:46,300 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 181 transitions. [2023-11-26 11:57:46,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 4 states have call successors, (46), 3 states have call predecessors, (46), 5 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2023-11-26 11:57:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 181 transitions. [2023-11-26 11:57:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-26 11:57:46,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:46,303 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:46,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:46,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:46,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:46,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1022717561, now seen corresponding path program 1 times [2023-11-26 11:57:46,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:46,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066911438] [2023-11-26 11:57:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:46,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:46,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764203828] [2023-11-26 11:57:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:46,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:46,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:46,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:46,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00a0bdf-05fc-4c15-a63b-2deabb331b10/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:57:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:46,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-26 11:57:46,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 420 proven. 216 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-11-26 11:57:48,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 54 proven. 135 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2023-11-26 11:58:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066911438] [2023-11-26 11:58:02,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764203828] [2023-11-26 11:58:02,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764203828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:02,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:58:02,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2023-11-26 11:58:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582685165] [2023-11-26 11:58:02,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:02,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-26 11:58:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-26 11:58:02,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1079, Unknown=0, NotChecked=0, Total=1406 [2023-11-26 11:58:02,726 INFO L87 Difference]: Start difference. First operand 125 states and 181 transitions. Second operand has 38 states, 35 states have (on average 2.857142857142857) internal successors, (100), 34 states have internal predecessors, (100), 12 states have call successors, (46), 7 states have call predecessors, (46), 12 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2023-11-26 11:58:22,201 WARN L293 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 51 DAG size of output: 49 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)