./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/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_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/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_74242c79-8e96-4f98-94c6-01ab55e547fe/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 985b50a0b8eeadb0f849d937466c4ec1e5f58df88650cbc5b820e0f210728055 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:39,579 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:39,701 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:44:39,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:39,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:39,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:39,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:39,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:39,758 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:39,763 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:39,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:39,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:39,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:39,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:39,768 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:39,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:39,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:39,769 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:39,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:39,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:39,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:39,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:39,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:39,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:39,772 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:39,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:39,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:39,774 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:39,775 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:39,775 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:39,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:39,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:39,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:39,777 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:39,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:39,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:39,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:39,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:39,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:39,779 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:39,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:39,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:39,780 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_74242c79-8e96-4f98-94c6-01ab55e547fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 985b50a0b8eeadb0f849d937466c4ec1e5f58df88650cbc5b820e0f210728055 [2023-11-26 10:44:40,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:40,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:40,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:40,097 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:40,097 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:40,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i [2023-11-26 10:44:43,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:43,655 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:43,656 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i [2023-11-26 10:44:43,679 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/data/0f3064d38/4b8a53db1f78404e986e386417a4198a/FLAG03bf54d1e [2023-11-26 10:44:43,696 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/data/0f3064d38/4b8a53db1f78404e986e386417a4198a [2023-11-26 10:44:43,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:43,700 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:43,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:43,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:43,713 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:43,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28956958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:43, skipping insertion in model container [2023-11-26 10:44:43,715 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:43" (1/1) ... [2023-11-26 10:44:43,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:43,930 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_74242c79-8e96-4f98-94c6-01ab55e547fe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i[919,932] [2023-11-26 10:44:44,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:44,027 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:44,040 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_74242c79-8e96-4f98-94c6-01ab55e547fe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i[919,932] [2023-11-26 10:44:44,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:44,146 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:44,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44 WrapperNode [2023-11-26 10:44:44,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:44,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:44,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:44,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:44,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,243 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 214 [2023-11-26 10:44:44,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:44,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:44,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:44,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:44,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,263 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,288 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 10:44:44,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:44,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:44,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:44,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:44,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (1/1) ... [2023-11-26 10:44:44,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:44,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:44,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:44,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:44,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:44,447 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:44:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:44:44,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:44,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:44,585 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:44,587 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:45,200 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:45,230 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:45,231 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:44:45,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:45 BoogieIcfgContainer [2023-11-26 10:44:45,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:45,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:45,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:45,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:45,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:43" (1/3) ... [2023-11-26 10:44:45,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de03022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:45, skipping insertion in model container [2023-11-26 10:44:45,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:44" (2/3) ... [2023-11-26 10:44:45,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de03022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:45, skipping insertion in model container [2023-11-26 10:44:45,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:45" (3/3) ... [2023-11-26 10:44:45,240 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i [2023-11-26 10:44:45,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:45,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:45,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:45,343 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;@347f97e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:45,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:44:45,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 54 states have internal predecessors, (84), 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 10:44:45,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-26 10:44:45,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:45,373 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 10:44:45,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:45,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:45,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1762432548, now seen corresponding path program 1 times [2023-11-26 10:44:45,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:45,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575890065] [2023-11-26 10:44:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:45,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575890065] [2023-11-26 10:44:45,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:44:45,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788566828] [2023-11-26 10:44:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:45,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:44:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:44:45,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:46,058 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 10:44:46,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:46,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788566828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:46,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:46,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:46,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646547172] [2023-11-26 10:44:46,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:46,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:44:46,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:46,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:44:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:46,123 INFO L87 Difference]: Start difference. First operand has 79 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 54 states have internal predecessors, (84), 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 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 10:44:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:46,178 INFO L93 Difference]: Finished difference Result 155 states and 281 transitions. [2023-11-26 10:44:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:44:46,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 149 [2023-11-26 10:44:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:46,190 INFO L225 Difference]: With dead ends: 155 [2023-11-26 10:44:46,190 INFO L226 Difference]: Without dead ends: 77 [2023-11-26 10:44:46,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 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 10:44:46,198 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:46,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:46,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-26 10:44:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-26 10:44:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.5) internal successors, (78), 52 states have internal predecessors, (78), 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 10:44:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 124 transitions. [2023-11-26 10:44:46,250 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 124 transitions. Word has length 149 [2023-11-26 10:44:46,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:46,251 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 124 transitions. [2023-11-26 10:44:46,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 10:44:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 124 transitions. [2023-11-26 10:44:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-26 10:44:46,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:46,256 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, 1] [2023-11-26 10:44:46,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:46,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:44:46,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:46,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1540042825, now seen corresponding path program 1 times [2023-11-26 10:44:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:46,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650545066] [2023-11-26 10:44:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:46,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:46,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796610006] [2023-11-26 10:44:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:46,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:46,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:46,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:46,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:44:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 10:44:46,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 680 proven. 105 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-26 10:44:48,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 75 proven. 114 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2023-11-26 10:44:49,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650545066] [2023-11-26 10:44:49,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796610006] [2023-11-26 10:44:49,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796610006] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:49,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:49,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-11-26 10:44:49,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019595308] [2023-11-26 10:44:49,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:49,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 10:44:49,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:49,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 10:44:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2023-11-26 10:44:49,556 INFO L87 Difference]: Start difference. First operand 77 states and 124 transitions. Second operand has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 6 states have call successors, (41), 4 states have call predecessors, (41), 10 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2023-11-26 10:44:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:55,789 INFO L93 Difference]: Finished difference Result 543 states and 804 transitions. [2023-11-26 10:44:55,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-26 10:44:55,792 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 6 states have call successors, (41), 4 states have call predecessors, (41), 10 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) Word has length 150 [2023-11-26 10:44:55,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:55,805 INFO L225 Difference]: With dead ends: 543 [2023-11-26 10:44:55,805 INFO L226 Difference]: Without dead ends: 467 [2023-11-26 10:44:55,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2280, Invalid=5910, Unknown=0, NotChecked=0, Total=8190 [2023-11-26 10:44:55,814 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1321 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:55,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 847 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-26 10:44:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-26 10:44:55,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 124. [2023-11-26 10:44:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 94 states have internal predecessors, (137), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 10:44:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 183 transitions. [2023-11-26 10:44:55,888 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 183 transitions. Word has length 150 [2023-11-26 10:44:55,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:55,891 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 183 transitions. [2023-11-26 10:44:55,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 6 states have call successors, (41), 4 states have call predecessors, (41), 10 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2023-11-26 10:44:55,892 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 183 transitions. [2023-11-26 10:44:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-26 10:44:55,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:55,905 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, 1, 1] [2023-11-26 10:44:55,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 10:44:56,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:56,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:56,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash -921035514, now seen corresponding path program 1 times [2023-11-26 10:44:56,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:56,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465533786] [2023-11-26 10:44:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:56,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633264176] [2023-11-26 10:44:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:56,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:56,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:56,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:56,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74242c79-8e96-4f98-94c6-01ab55e547fe/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:44:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:57,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-26 10:44:57,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:45:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 751 proven. 171 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-26 10:45:03,350 INFO L327 TraceCheckSpWp]: Computing backward predicates...