./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ --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 399278bac1c9babdd7cf836eb639dd83b63ce913ca16317b40f835863b115f5f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:27:14,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:27:14,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:27:14,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:27:14,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:27:14,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:27:14,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:27:14,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:27:14,775 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:27:14,780 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:27:14,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:27:14,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:27:14,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:27:14,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:27:14,784 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:27:14,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:27:14,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:27:14,785 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:27:14,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:27:14,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:27:14,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:27:14,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:27:14,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:27:14,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:27:14,788 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:27:14,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:27:14,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:27:14,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:27:14,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:27:14,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:27:14,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:27:14,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:27:14,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:27:14,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:27:14,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:27:14,793 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:27:14,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:27:14,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:27:14,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:27:14,794 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:27:14,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:27:14,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:27:14,795 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_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 399278bac1c9babdd7cf836eb639dd83b63ce913ca16317b40f835863b115f5f [2023-11-23 22:27:15,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:27:15,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:27:15,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:27:15,055 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:27:15,056 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:27:15,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i [2023-11-23 22:27:18,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:27:18,343 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:27:18,344 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i [2023-11-23 22:27:18,356 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/data/417738cc1/440b6db35a624bd9ac625b7dfb828470/FLAGa5cdd2ce5 [2023-11-23 22:27:18,373 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/data/417738cc1/440b6db35a624bd9ac625b7dfb828470 [2023-11-23 22:27:18,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:27:18,377 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:27:18,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:27:18,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:27:18,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:27:18,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:18,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec43701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18, skipping insertion in model container [2023-11-23 22:27:18,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:18,444 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:27:18,618 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_e08bc3f1-8e5b-4002-8fd3-c8d687775459/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i[919,932] [2023-11-23 22:27:18,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:27:18,737 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:27:18,752 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_e08bc3f1-8e5b-4002-8fd3-c8d687775459/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i[919,932] [2023-11-23 22:27:18,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:27:18,827 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:27:18,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18 WrapperNode [2023-11-23 22:27:18,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:27:18,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:27:18,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:27:18,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:27:18,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:18,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:18,926 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 308 [2023-11-23 22:27:18,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:27:18,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:27:18,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:27:18,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:27:18,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:18,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:18,945 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:18,969 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:27:18,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:18,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:18,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:19,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:19,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:19,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:19,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:27:19,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:27:19,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:27:19,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:27:19,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (1/1) ... [2023-11-23 22:27:19,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:27:19,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:19,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:27:19,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:27:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:27:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 22:27:19,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 22:27:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:27:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:27:19,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:27:19,345 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:27:19,348 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:27:20,086 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:27:20,132 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:27:20,133 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:27:20,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:27:20 BoogieIcfgContainer [2023-11-23 22:27:20,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:27:20,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:27:20,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:27:20,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:27:20,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:27:18" (1/3) ... [2023-11-23 22:27:20,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3692c04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:27:20, skipping insertion in model container [2023-11-23 22:27:20,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:18" (2/3) ... [2023-11-23 22:27:20,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3692c04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:27:20, skipping insertion in model container [2023-11-23 22:27:20,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:27:20" (3/3) ... [2023-11-23 22:27:20,147 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i [2023-11-23 22:27:20,168 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:27:20,168 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:27:20,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:27:20,231 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;@5aa8314, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:27:20,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:27:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 77 states have (on average 1.6233766233766234) internal successors, (125), 78 states have internal predecessors, (125), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-23 22:27:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-23 22:27:20,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:27:20,259 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:20,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:27:20,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2059120273, now seen corresponding path program 1 times [2023-11-23 22:27:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:20,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559783524] [2023-11-23 22:27:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559783524] [2023-11-23 22:27:20,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 22:27:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361249562] [2023-11-23 22:27:20,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:20,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:20,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:20,641 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:27:20,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:27:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:20,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 22:27:20,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:27:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2023-11-23 22:27:21,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:27:21,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361249562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:21,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:21,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:27:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418496991] [2023-11-23 22:27:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:21,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:27:21,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:21,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:27:21,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:27:21,082 INFO L87 Difference]: Start difference. First operand has 109 states, 77 states have (on average 1.6233766233766234) internal successors, (125), 78 states have internal predecessors, (125), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 22:27:21,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:27:21,164 INFO L93 Difference]: Finished difference Result 215 states and 393 transitions. [2023-11-23 22:27:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:27:21,167 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 189 [2023-11-23 22:27:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:27:21,179 INFO L225 Difference]: With dead ends: 215 [2023-11-23 22:27:21,179 INFO L226 Difference]: Without dead ends: 107 [2023-11-23 22:27:21,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:27:21,194 INFO L413 NwaCegarLoop]: 171 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, 171 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 [2023-11-23 22:27:21,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:27:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-23 22:27:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-23 22:27:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 76 states have (on average 1.5263157894736843) internal successors, (116), 76 states have internal predecessors, (116), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-23 22:27:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 174 transitions. [2023-11-23 22:27:21,259 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 174 transitions. Word has length 189 [2023-11-23 22:27:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:27:21,260 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 174 transitions. [2023-11-23 22:27:21,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 22:27:21,261 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 174 transitions. [2023-11-23 22:27:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-23 22:27:21,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:27:21,267 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:21,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:27:21,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 22:27:21,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:27:21,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1873888463, now seen corresponding path program 1 times [2023-11-23 22:27:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499788374] [2023-11-23 22:27:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:21,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:27:21,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141896027] [2023-11-23 22:27:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:21,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:21,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:21,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:27:21,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:27:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:21,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:27:21,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:27:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 838 proven. 39 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2023-11-23 22:27:22,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:27:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 45 proven. 39 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-23 22:27:22,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499788374] [2023-11-23 22:27:22,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:27:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141896027] [2023-11-23 22:27:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141896027] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:27:22,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:27:22,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-23 22:27:22,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002285061] [2023-11-23 22:27:22,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:27:22,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:27:22,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:22,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:27:22,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:27:22,349 INFO L87 Difference]: Start difference. First operand 107 states and 174 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-23 22:27:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:27:23,431 INFO L93 Difference]: Finished difference Result 460 states and 732 transitions. [2023-11-23 22:27:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 22:27:23,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 190 [2023-11-23 22:27:23,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:27:23,447 INFO L225 Difference]: With dead ends: 460 [2023-11-23 22:27:23,447 INFO L226 Difference]: Without dead ends: 354 [2023-11-23 22:27:23,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 372 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-23 22:27:23,453 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 420 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:27:23,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1001 Invalid, 727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [170 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 22:27:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-23 22:27:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 255. [2023-11-23 22:27:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 177 states have (on average 1.4689265536723164) internal successors, (260), 179 states have internal predecessors, (260), 73 states have call successors, (73), 4 states have call predecessors, (73), 4 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-23 22:27:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 406 transitions. [2023-11-23 22:27:23,573 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 406 transitions. Word has length 190 [2023-11-23 22:27:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:27:23,575 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 406 transitions. [2023-11-23 22:27:23,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-23 22:27:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 406 transitions. [2023-11-23 22:27:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-23 22:27:23,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:27:23,590 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:23,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:27:23,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:23,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:27:23,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:23,813 INFO L85 PathProgramCache]: Analyzing trace with hash -497850799, now seen corresponding path program 1 times [2023-11-23 22:27:23,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:23,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325596841] [2023-11-23 22:27:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:23,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:23,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:27:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361797395] [2023-11-23 22:27:23,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:23,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:23,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:23,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:27:23,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:27:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:24,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-23 22:27:24,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:27:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 240 proven. 78 refuted. 0 times theorem prover too weak. 1306 trivial. 0 not checked. [2023-11-23 22:27:26,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:27:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-23 22:27:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325596841] [2023-11-23 22:27:34,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:27:34,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361797395] [2023-11-23 22:27:34,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361797395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:27:34,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:27:34,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 16 [2023-11-23 22:27:34,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174799312] [2023-11-23 22:27:34,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:27:34,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 22:27:34,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:34,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 22:27:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-23 22:27:34,806 INFO L87 Difference]: Start difference. First operand 255 states and 406 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-23 22:27:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:27:42,309 INFO L93 Difference]: Finished difference Result 1396 states and 2206 transitions. [2023-11-23 22:27:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-23 22:27:42,310 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 190 [2023-11-23 22:27:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:27:42,322 INFO L225 Difference]: With dead ends: 1396 [2023-11-23 22:27:42,323 INFO L226 Difference]: Without dead ends: 1166 [2023-11-23 22:27:42,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=528, Invalid=1542, Unknown=0, NotChecked=0, Total=2070 [2023-11-23 22:27:42,327 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1844 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:27:42,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 1445 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-23 22:27:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2023-11-23 22:27:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 360. [2023-11-23 22:27:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 287 states have (on average 1.5017421602787457) internal successors, (431), 289 states have internal predecessors, (431), 63 states have call successors, (63), 9 states have call predecessors, (63), 9 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-23 22:27:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 557 transitions. [2023-11-23 22:27:42,402 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 557 transitions. Word has length 190 [2023-11-23 22:27:42,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:27:42,404 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 557 transitions. [2023-11-23 22:27:42,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-23 22:27:42,405 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 557 transitions. [2023-11-23 22:27:42,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-23 22:27:42,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:27:42,408 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:42,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:27:42,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:42,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:27:42,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:42,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1273724622, now seen corresponding path program 1 times [2023-11-23 22:27:42,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:42,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234292738] [2023-11-23 22:27:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:42,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:42,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:27:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43207390] [2023-11-23 22:27:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:42,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:42,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:42,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:27:42,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:27:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:42,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 22:27:42,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:27:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 240 proven. 78 refuted. 0 times theorem prover too weak. 1306 trivial. 0 not checked. [2023-11-23 22:27:43,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:27:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-23 22:27:43,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:43,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234292738] [2023-11-23 22:27:43,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:27:43,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43207390] [2023-11-23 22:27:43,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43207390] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:27:43,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:27:43,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-23 22:27:43,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095005816] [2023-11-23 22:27:43,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:27:43,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 22:27:43,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 22:27:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:27:43,917 INFO L87 Difference]: Start difference. First operand 360 states and 557 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-23 22:27:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:27:44,705 INFO L93 Difference]: Finished difference Result 1122 states and 1751 transitions. [2023-11-23 22:27:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 22:27:44,706 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 192 [2023-11-23 22:27:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:27:44,715 INFO L225 Difference]: With dead ends: 1122 [2023-11-23 22:27:44,715 INFO L226 Difference]: Without dead ends: 834 [2023-11-23 22:27:44,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:27:44,726 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 789 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:27:44,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 568 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 22:27:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-11-23 22:27:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 519. [2023-11-23 22:27:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 413 states have (on average 1.4891041162227603) internal successors, (615), 415 states have internal predecessors, (615), 92 states have call successors, (92), 13 states have call predecessors, (92), 13 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-23 22:27:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 799 transitions. [2023-11-23 22:27:44,832 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 799 transitions. Word has length 192 [2023-11-23 22:27:44,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:27:44,834 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 799 transitions. [2023-11-23 22:27:44,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-23 22:27:44,835 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 799 transitions. [2023-11-23 22:27:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-23 22:27:44,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:27:44,841 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:44,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:27:45,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-23 22:27:45,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:27:45,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:45,050 INFO L85 PathProgramCache]: Analyzing trace with hash 779130379, now seen corresponding path program 1 times [2023-11-23 22:27:45,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:45,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566753644] [2023-11-23 22:27:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:45,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:45,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:27:45,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884693093] [2023-11-23 22:27:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:45,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:45,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:45,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:27:45,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:27:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:45,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 22:27:45,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:27:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 795 proven. 249 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-11-23 22:27:47,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:27:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 51 proven. 114 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2023-11-23 22:27:52,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566753644] [2023-11-23 22:27:52,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:27:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884693093] [2023-11-23 22:27:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884693093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:27:52,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:27:52,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 28 [2023-11-23 22:27:52,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373395341] [2023-11-23 22:27:52,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:27:52,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 22:27:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 22:27:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=525, Unknown=0, NotChecked=0, Total=756 [2023-11-23 22:27:52,890 INFO L87 Difference]: Start difference. First operand 519 states and 799 transitions. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 27 states have internal predecessors, (123), 8 states have call successors, (58), 6 states have call predecessors, (58), 11 states have return successors, (58), 8 states have call predecessors, (58), 8 states have call successors, (58) [2023-11-23 22:28:07,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:28:07,902 INFO L93 Difference]: Finished difference Result 1778 states and 2672 transitions. [2023-11-23 22:28:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-23 22:28:07,903 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 27 states have internal predecessors, (123), 8 states have call successors, (58), 6 states have call predecessors, (58), 11 states have return successors, (58), 8 states have call predecessors, (58), 8 states have call successors, (58) Word has length 193 [2023-11-23 22:28:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:28:07,913 INFO L225 Difference]: With dead ends: 1778 [2023-11-23 22:28:07,913 INFO L226 Difference]: Without dead ends: 1361 [2023-11-23 22:28:07,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2385 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1785, Invalid=3765, Unknown=0, NotChecked=0, Total=5550 [2023-11-23 22:28:07,918 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1183 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:28:07,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1935 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-23 22:28:07,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2023-11-23 22:28:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 777. [2023-11-23 22:28:08,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 635 states have (on average 1.4645669291338583) internal successors, (930), 641 states have internal predecessors, (930), 109 states have call successors, (109), 32 states have call predecessors, (109), 32 states have return successors, (109), 103 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-23 22:28:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1148 transitions. [2023-11-23 22:28:08,074 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1148 transitions. Word has length 193 [2023-11-23 22:28:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:28:08,075 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1148 transitions. [2023-11-23 22:28:08,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 27 states have internal predecessors, (123), 8 states have call successors, (58), 6 states have call predecessors, (58), 11 states have return successors, (58), 8 states have call predecessors, (58), 8 states have call successors, (58) [2023-11-23 22:28:08,075 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1148 transitions. [2023-11-23 22:28:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-23 22:28:08,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:28:08,079 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:08,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:08,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:08,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:28:08,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:08,293 INFO L85 PathProgramCache]: Analyzing trace with hash -592214259, now seen corresponding path program 1 times [2023-11-23 22:28:08,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:08,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894827964] [2023-11-23 22:28:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:08,333 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:28:08,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756029689] [2023-11-23 22:28:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:08,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:08,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:08,335 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:08,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08bc3f1-8e5b-4002-8fd3-c8d687775459/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:28:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:08,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 22:28:08,626 INFO L285 TraceCheckSpWp]: Computing forward predicates...