./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-16.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/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_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-16.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/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_833d91bc-5497-43f0-af2c-f2888c5114bf/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 5156256452dc861aba62ea76c0f9e47cdd0f69dc1017e09229ee6055fbff4337 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:58:28,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:58:28,773 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:58:28,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:58:28,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:58:28,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:58:28,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:58:28,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:58:28,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:58:28,836 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:58:28,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:58:28,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:58:28,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:58:28,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:58:28,841 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:58:28,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:58:28,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:58:28,843 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:58:28,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:58:28,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:58:28,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:58:28,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:58:28,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:58:28,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:58:28,846 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:58:28,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:58:28,847 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:58:28,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:58:28,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:58:28,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:58:28,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:58:28,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:28,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:58:28,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:58:28,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:58:28,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:58:28,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:58:28,852 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:58:28,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:58:28,852 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:58:28,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:58:28,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:58:28,853 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_833d91bc-5497-43f0-af2c-f2888c5114bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5156256452dc861aba62ea76c0f9e47cdd0f69dc1017e09229ee6055fbff4337 [2023-11-26 11:58:29,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:58:29,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:58:29,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:58:29,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:58:29,206 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:58:29,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-16.i [2023-11-26 11:58:32,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:58:32,717 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:58:32,721 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-16.i [2023-11-26 11:58:32,746 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/data/54eda1656/e108af86252b45d78aea8b5ec06ededb/FLAG34413c876 [2023-11-26 11:58:32,763 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/data/54eda1656/e108af86252b45d78aea8b5ec06ededb [2023-11-26 11:58:32,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:58:32,770 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:58:32,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:32,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:58:32,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:58:32,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:32" (1/1) ... [2023-11-26 11:58:32,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59df0a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:32, skipping insertion in model container [2023-11-26 11:58:32,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:32" (1/1) ... [2023-11-26 11:58:32,850 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:58:33,065 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-16.i[916,929] [2023-11-26 11:58:33,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:33,399 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:58:33,409 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_833d91bc-5497-43f0-af2c-f2888c5114bf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-16.i[916,929] [2023-11-26 11:58:33,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:33,539 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:58:33,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33 WrapperNode [2023-11-26 11:58:33,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:33,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:33,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:58:33,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:58:33,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,699 INFO L138 Inliner]: procedures = 26, calls = 116, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 925 [2023-11-26 11:58:33,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:33,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:58:33,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:58:33,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:58:33,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,849 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:58:33,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:58:33,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:58:33,974 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:58:33,974 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:58:33,975 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (1/1) ... [2023-11-26 11:58:33,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:33,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:34,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:58:34,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:58:34,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:58:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:58:34,048 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:58:34,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:58:34,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:58:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:58:34,231 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:58:34,234 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:58:35,618 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:58:35,715 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:58:35,715 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:58:35,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:35 BoogieIcfgContainer [2023-11-26 11:58:35,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:58:35,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:58:35,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:58:35,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:58:35,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:58:32" (1/3) ... [2023-11-26 11:58:35,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d23f0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:35, skipping insertion in model container [2023-11-26 11:58:35,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:33" (2/3) ... [2023-11-26 11:58:35,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d23f0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:35, skipping insertion in model container [2023-11-26 11:58:35,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:35" (3/3) ... [2023-11-26 11:58:35,728 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-16.i [2023-11-26 11:58:35,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:58:35,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:58:35,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:58:35,821 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;@493393da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:58:35,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:58:35,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 339 states, 233 states have (on average 1.6652360515021458) internal successors, (388), 234 states have internal predecessors, (388), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-26 11:58:35,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-26 11:58:35,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:35,885 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:35,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:35,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:35,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1248339821, now seen corresponding path program 1 times [2023-11-26 11:58:35,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:35,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513040668] [2023-11-26 11:58:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:35,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:36,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:36,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513040668] [2023-11-26 11:58:36,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:58:36,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289704746] [2023-11-26 11:58:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:36,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:36,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:36,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:36,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:58:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:37,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:58:37,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 20808 trivial. 0 not checked. [2023-11-26 11:58:37,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:37,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289704746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:37,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:37,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:37,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750549962] [2023-11-26 11:58:37,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:37,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:58:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:58:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:58:37,378 INFO L87 Difference]: Start difference. First operand has 339 states, 233 states have (on average 1.6652360515021458) internal successors, (388), 234 states have internal predecessors, (388), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-11-26 11:58:37,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:37,505 INFO L93 Difference]: Finished difference Result 675 states and 1289 transitions. [2023-11-26 11:58:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:58:37,509 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) Word has length 663 [2023-11-26 11:58:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:37,528 INFO L225 Difference]: With dead ends: 675 [2023-11-26 11:58:37,528 INFO L226 Difference]: Without dead ends: 337 [2023-11-26 11:58:37,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:58:37,542 INFO L413 NwaCegarLoop]: 583 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, 583 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 11:58:37,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 583 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:58:37,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-26 11:58:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2023-11-26 11:58:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 232 states have (on average 1.6379310344827587) internal successors, (380), 232 states have internal predecessors, (380), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-26 11:58:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 586 transitions. [2023-11-26 11:58:37,665 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 586 transitions. Word has length 663 [2023-11-26 11:58:37,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:37,666 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 586 transitions. [2023-11-26 11:58:37,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-11-26 11:58:37,667 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 586 transitions. [2023-11-26 11:58:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-26 11:58:37,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:37,691 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:37,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:37,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:58:37,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:37,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash -862666021, now seen corresponding path program 1 times [2023-11-26 11:58:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037807613] [2023-11-26 11:58:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:38,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:38,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257128728] [2023-11-26 11:58:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:38,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:38,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:38,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:58:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:38,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:58:38,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:58:38,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:38,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037807613] [2023-11-26 11:58:38,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:38,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257128728] [2023-11-26 11:58:38,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257128728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:38,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:58:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21199286] [2023-11-26 11:58:38,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:38,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:38,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:38,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:38,890 INFO L87 Difference]: Start difference. First operand 337 states and 586 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:39,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:39,421 INFO L93 Difference]: Finished difference Result 1102 states and 1932 transitions. [2023-11-26 11:58:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:39,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 663 [2023-11-26 11:58:39,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:39,438 INFO L225 Difference]: With dead ends: 1102 [2023-11-26 11:58:39,439 INFO L226 Difference]: Without dead ends: 766 [2023-11-26 11:58:39,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:39,442 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 785 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:39,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1869 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:58:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-11-26 11:58:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 760. [2023-11-26 11:58:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 584 states have (on average 1.7089041095890412) internal successors, (998), 586 states have internal predecessors, (998), 171 states have call successors, (171), 4 states have call predecessors, (171), 4 states have return successors, (171), 169 states have call predecessors, (171), 171 states have call successors, (171) [2023-11-26 11:58:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1340 transitions. [2023-11-26 11:58:39,588 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1340 transitions. Word has length 663 [2023-11-26 11:58:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:39,591 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 1340 transitions. [2023-11-26 11:58:39,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1340 transitions. [2023-11-26 11:58:39,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-26 11:58:39,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:39,608 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:39,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:39,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:39,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:39,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash -23632359, now seen corresponding path program 1 times [2023-11-26 11:58:39,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:39,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65799140] [2023-11-26 11:58:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:39,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:39,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:39,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459425682] [2023-11-26 11:58:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:39,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:39,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:39,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:39,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:58:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:40,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:58:40,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:58:41,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:41,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65799140] [2023-11-26 11:58:41,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:41,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459425682] [2023-11-26 11:58:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459425682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:41,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:41,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:41,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048197499] [2023-11-26 11:58:41,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:41,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:41,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:41,549 INFO L87 Difference]: Start difference. First operand 760 states and 1340 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:42,215 INFO L93 Difference]: Finished difference Result 2798 states and 4922 transitions. [2023-11-26 11:58:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:42,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 663 [2023-11-26 11:58:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:42,234 INFO L225 Difference]: With dead ends: 2798 [2023-11-26 11:58:42,235 INFO L226 Difference]: Without dead ends: 2039 [2023-11-26 11:58:42,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:42,239 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 723 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:42,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1629 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:58:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2023-11-26 11:58:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1906. [2023-11-26 11:58:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1485 states have (on average 1.7144781144781145) internal successors, (2546), 1491 states have internal predecessors, (2546), 410 states have call successors, (410), 10 states have call predecessors, (410), 10 states have return successors, (410), 404 states have call predecessors, (410), 410 states have call successors, (410) [2023-11-26 11:58:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 3366 transitions. [2023-11-26 11:58:42,477 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 3366 transitions. Word has length 663 [2023-11-26 11:58:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:42,479 INFO L495 AbstractCegarLoop]: Abstraction has 1906 states and 3366 transitions. [2023-11-26 11:58:42,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 3366 transitions. [2023-11-26 11:58:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-26 11:58:42,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:42,489 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:42,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:58:42,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:42,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:42,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2025755483, now seen corresponding path program 1 times [2023-11-26 11:58:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:42,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609019987] [2023-11-26 11:58:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:42,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:42,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:42,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690225087] [2023-11-26 11:58:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:42,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:42,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:42,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:42,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:58:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:43,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:43,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:58:43,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:43,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:43,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609019987] [2023-11-26 11:58:43,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:43,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690225087] [2023-11-26 11:58:43,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690225087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:43,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:43,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:43,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007097600] [2023-11-26 11:58:43,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:43,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:43,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:43,373 INFO L87 Difference]: Start difference. First operand 1906 states and 3366 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:43,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:43,627 INFO L93 Difference]: Finished difference Result 5277 states and 9273 transitions. [2023-11-26 11:58:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:43,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 663 [2023-11-26 11:58:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:43,655 INFO L225 Difference]: With dead ends: 5277 [2023-11-26 11:58:43,655 INFO L226 Difference]: Without dead ends: 3372 [2023-11-26 11:58:43,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:43,663 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 373 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:43,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1309 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:58:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2023-11-26 11:58:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3368. [2023-11-26 11:58:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2601 states have (on average 1.68319876970396) internal successors, (4378), 2615 states have internal predecessors, (4378), 746 states have call successors, (746), 20 states have call predecessors, (746), 20 states have return successors, (746), 732 states have call predecessors, (746), 746 states have call successors, (746) [2023-11-26 11:58:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 5870 transitions. [2023-11-26 11:58:44,042 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 5870 transitions. Word has length 663 [2023-11-26 11:58:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:44,044 INFO L495 AbstractCegarLoop]: Abstraction has 3368 states and 5870 transitions. [2023-11-26 11:58:44,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 5870 transitions. [2023-11-26 11:58:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-26 11:58:44,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:44,055 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:44,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:44,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:44,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:44,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:44,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2067387879, now seen corresponding path program 1 times [2023-11-26 11:58:44,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:44,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342318454] [2023-11-26 11:58:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:44,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:44,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:44,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492070326] [2023-11-26 11:58:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:44,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:44,401 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:44,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:58:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:44,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:44,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:58:45,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:45,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:45,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342318454] [2023-11-26 11:58:45,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492070326] [2023-11-26 11:58:45,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492070326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:45,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:45,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:45,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462204668] [2023-11-26 11:58:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:45,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:45,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:45,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:45,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:45,867 INFO L87 Difference]: Start difference. First operand 3368 states and 5870 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:46,151 INFO L93 Difference]: Finished difference Result 7966 states and 13865 transitions. [2023-11-26 11:58:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:46,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 663 [2023-11-26 11:58:46,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:46,188 INFO L225 Difference]: With dead ends: 7966 [2023-11-26 11:58:46,188 INFO L226 Difference]: Without dead ends: 4599 [2023-11-26 11:58:46,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:46,200 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 238 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:46,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1225 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:58:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2023-11-26 11:58:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4597. [2023-11-26 11:58:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4597 states, 3517 states have (on average 1.6741541086152971) internal successors, (5888), 3536 states have internal predecessors, (5888), 1051 states have call successors, (1051), 28 states have call predecessors, (1051), 28 states have return successors, (1051), 1032 states have call predecessors, (1051), 1051 states have call successors, (1051) [2023-11-26 11:58:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 7990 transitions. [2023-11-26 11:58:46,745 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 7990 transitions. Word has length 663 [2023-11-26 11:58:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:46,770 INFO L495 AbstractCegarLoop]: Abstraction has 4597 states and 7990 transitions. [2023-11-26 11:58:46,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 7990 transitions. [2023-11-26 11:58:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-26 11:58:46,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:46,786 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:46,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:46,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:46,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:46,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:46,996 INFO L85 PathProgramCache]: Analyzing trace with hash 915005329, now seen corresponding path program 1 times [2023-11-26 11:58:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:46,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401887552] [2023-11-26 11:58:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:46,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:47,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117072629] [2023-11-26 11:58:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:47,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:47,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:47,118 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:47,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:58:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:47,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:47,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:58:47,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401887552] [2023-11-26 11:58:47,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117072629] [2023-11-26 11:58:47,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117072629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:47,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:47,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:47,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102439174] [2023-11-26 11:58:47,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:47,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:47,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:47,668 INFO L87 Difference]: Start difference. First operand 4597 states and 7990 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:48,147 INFO L93 Difference]: Finished difference Result 13087 states and 22751 transitions. [2023-11-26 11:58:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:48,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 665 [2023-11-26 11:58:48,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:48,210 INFO L225 Difference]: With dead ends: 13087 [2023-11-26 11:58:48,210 INFO L226 Difference]: Without dead ends: 8601 [2023-11-26 11:58:48,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:48,225 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 382 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:48,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1283 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:58:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8601 states. [2023-11-26 11:58:49,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8601 to 8594. [2023-11-26 11:58:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 6664 states have (on average 1.6670168067226891) internal successors, (11109), 6704 states have internal predecessors, (11109), 1875 states have call successors, (1875), 54 states have call predecessors, (1875), 54 states have return successors, (1875), 1835 states have call predecessors, (1875), 1875 states have call successors, (1875) [2023-11-26 11:58:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 14859 transitions. [2023-11-26 11:58:49,159 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 14859 transitions. Word has length 665 [2023-11-26 11:58:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:49,160 INFO L495 AbstractCegarLoop]: Abstraction has 8594 states and 14859 transitions. [2023-11-26 11:58:49,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:49,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 14859 transitions. [2023-11-26 11:58:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-26 11:58:49,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:49,178 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:49,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:49,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:58:49,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:49,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1416754391, now seen corresponding path program 1 times [2023-11-26 11:58:49,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:49,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088169791] [2023-11-26 11:58:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:49,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:49,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:49,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363612881] [2023-11-26 11:58:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:49,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:49,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:49,492 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:49,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:58:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:49,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:49,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:58:50,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:50,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:50,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088169791] [2023-11-26 11:58:50,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:50,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363612881] [2023-11-26 11:58:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363612881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:50,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:50,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257694815] [2023-11-26 11:58:50,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:50,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:50,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:50,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:50,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:50,127 INFO L87 Difference]: Start difference. First operand 8594 states and 14859 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:50,728 INFO L93 Difference]: Finished difference Result 17094 states and 29555 transitions. [2023-11-26 11:58:50,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:50,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 667 [2023-11-26 11:58:50,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:50,791 INFO L225 Difference]: With dead ends: 17094 [2023-11-26 11:58:50,792 INFO L226 Difference]: Without dead ends: 8611 [2023-11-26 11:58:50,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:50,825 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 388 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:50,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1298 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:58:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8611 states. [2023-11-26 11:58:51,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8611 to 6546. [2023-11-26 11:58:51,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6546 states, 5285 states have (on average 1.6840113528855252) internal successors, (8900), 5309 states have internal predecessors, (8900), 1223 states have call successors, (1223), 37 states have call predecessors, (1223), 37 states have return successors, (1223), 1199 states have call predecessors, (1223), 1223 states have call successors, (1223) [2023-11-26 11:58:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6546 states to 6546 states and 11346 transitions. [2023-11-26 11:58:51,621 INFO L78 Accepts]: Start accepts. Automaton has 6546 states and 11346 transitions. Word has length 667 [2023-11-26 11:58:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:51,622 INFO L495 AbstractCegarLoop]: Abstraction has 6546 states and 11346 transitions. [2023-11-26 11:58:51,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6546 states and 11346 transitions. [2023-11-26 11:58:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-26 11:58:51,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:51,637 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:51,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:51,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:58:51,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:51,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash 413669695, now seen corresponding path program 1 times [2023-11-26 11:58:51,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:51,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516607753] [2023-11-26 11:58:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:51,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:51,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:51,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801573798] [2023-11-26 11:58:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:51,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:51,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:51,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:51,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:58:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:52,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:52,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:58:52,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:52,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:52,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516607753] [2023-11-26 11:58:52,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:52,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801573798] [2023-11-26 11:58:52,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801573798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:52,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:52,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961827922] [2023-11-26 11:58:52,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:52,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:52,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:52,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:52,511 INFO L87 Difference]: Start difference. First operand 6546 states and 11346 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:53,175 INFO L93 Difference]: Finished difference Result 19366 states and 33596 transitions. [2023-11-26 11:58:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:53,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 668 [2023-11-26 11:58:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:53,290 INFO L225 Difference]: With dead ends: 19366 [2023-11-26 11:58:53,290 INFO L226 Difference]: Without dead ends: 12935 [2023-11-26 11:58:53,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:53,312 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 545 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:53,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1193 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:58:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12935 states. [2023-11-26 11:58:54,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12935 to 12933. [2023-11-26 11:58:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12933 states, 10480 states have (on average 1.6760496183206106) internal successors, (17565), 10527 states have internal predecessors, (17565), 2380 states have call successors, (2380), 72 states have call predecessors, (2380), 72 states have return successors, (2380), 2333 states have call predecessors, (2380), 2380 states have call successors, (2380) [2023-11-26 11:58:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12933 states to 12933 states and 22325 transitions. [2023-11-26 11:58:54,650 INFO L78 Accepts]: Start accepts. Automaton has 12933 states and 22325 transitions. Word has length 668 [2023-11-26 11:58:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:54,651 INFO L495 AbstractCegarLoop]: Abstraction has 12933 states and 22325 transitions. [2023-11-26 11:58:54,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 12933 states and 22325 transitions. [2023-11-26 11:58:54,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-26 11:58:54,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:54,674 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:54,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:54,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:54,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:54,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1663667203, now seen corresponding path program 1 times [2023-11-26 11:58:54,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:54,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823197000] [2023-11-26 11:58:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:54,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:54,977 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:54,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060635271] [2023-11-26 11:58:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:54,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:54,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:54,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:55,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:58:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:55,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:55,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:58:55,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:55,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:55,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823197000] [2023-11-26 11:58:55,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:55,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060635271] [2023-11-26 11:58:55,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060635271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:55,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:55,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:55,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231876219] [2023-11-26 11:58:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:55,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:55,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:55,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:55,622 INFO L87 Difference]: Start difference. First operand 12933 states and 22325 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:56,469 INFO L93 Difference]: Finished difference Result 25762 states and 44490 transitions. [2023-11-26 11:58:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:56,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 668 [2023-11-26 11:58:56,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:56,517 INFO L225 Difference]: With dead ends: 25762 [2023-11-26 11:58:56,517 INFO L226 Difference]: Without dead ends: 12944 [2023-11-26 11:58:56,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:56,553 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 528 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:56,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1624 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:58:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12944 states. [2023-11-26 11:58:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12944 to 12942. [2023-11-26 11:58:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12942 states, 10489 states have (on average 1.6665077700448088) internal successors, (17480), 10536 states have internal predecessors, (17480), 2380 states have call successors, (2380), 72 states have call predecessors, (2380), 72 states have return successors, (2380), 2333 states have call predecessors, (2380), 2380 states have call successors, (2380) [2023-11-26 11:58:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12942 states to 12942 states and 22240 transitions. [2023-11-26 11:58:57,654 INFO L78 Accepts]: Start accepts. Automaton has 12942 states and 22240 transitions. Word has length 668 [2023-11-26 11:58:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:57,656 INFO L495 AbstractCegarLoop]: Abstraction has 12942 states and 22240 transitions. [2023-11-26 11:58:57,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:58:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 12942 states and 22240 transitions. [2023-11-26 11:58:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-26 11:58:57,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:57,679 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:57,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-26 11:58:57,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:57,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:57,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash 259560831, now seen corresponding path program 1 times [2023-11-26 11:58:57,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:57,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991289425] [2023-11-26 11:58:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:57,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:57,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:58:57,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631258310] [2023-11-26 11:58:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:57,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:57,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:57,989 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:58,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:58:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:58,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:58:58,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:58:58,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:58,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:58,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991289425] [2023-11-26 11:58:58,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:58:58,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631258310] [2023-11-26 11:58:58,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631258310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:58,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:58,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:58,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463723566] [2023-11-26 11:58:58,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:58,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:58,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:58,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:58,614 INFO L87 Difference]: Start difference. First operand 12942 states and 22240 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:59:00,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:00,354 INFO L93 Difference]: Finished difference Result 37981 states and 65168 transitions. [2023-11-26 11:59:00,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:59:00,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 668 [2023-11-26 11:59:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:00,455 INFO L225 Difference]: With dead ends: 37981 [2023-11-26 11:59:00,456 INFO L226 Difference]: Without dead ends: 25154 [2023-11-26 11:59:00,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:59:00,488 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 504 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:00,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1561 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:59:00,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25154 states. [2023-11-26 11:59:02,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25154 to 14910. [2023-11-26 11:59:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14910 states, 12457 states have (on average 1.6986433330657462) internal successors, (21160), 12504 states have internal predecessors, (21160), 2380 states have call successors, (2380), 72 states have call predecessors, (2380), 72 states have return successors, (2380), 2333 states have call predecessors, (2380), 2380 states have call successors, (2380) [2023-11-26 11:59:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14910 states to 14910 states and 25920 transitions. [2023-11-26 11:59:02,322 INFO L78 Accepts]: Start accepts. Automaton has 14910 states and 25920 transitions. Word has length 668 [2023-11-26 11:59:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:59:02,323 INFO L495 AbstractCegarLoop]: Abstraction has 14910 states and 25920 transitions. [2023-11-26 11:59:02,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:59:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 14910 states and 25920 transitions. [2023-11-26 11:59:02,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-26 11:59:02,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:02,347 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:02,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:02,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:59:02,557 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:02,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash 182660033, now seen corresponding path program 1 times [2023-11-26 11:59:02,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:02,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597820016] [2023-11-26 11:59:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:02,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:02,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:59:02,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424638694] [2023-11-26 11:59:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:02,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:02,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:02,649 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:02,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:59:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:03,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:59:03,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-26 11:59:04,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:59:04,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:04,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597820016] [2023-11-26 11:59:04,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:59:04,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424638694] [2023-11-26 11:59:04,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424638694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:04,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:04,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:59:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526635475] [2023-11-26 11:59:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:04,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:59:04,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:59:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:59:04,435 INFO L87 Difference]: Start difference. First operand 14910 states and 25920 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:59:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:07,156 INFO L93 Difference]: Finished difference Result 39732 states and 68911 transitions. [2023-11-26 11:59:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:59:07,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 668 [2023-11-26 11:59:07,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:07,244 INFO L225 Difference]: With dead ends: 39732 [2023-11-26 11:59:07,245 INFO L226 Difference]: Without dead ends: 24937 [2023-11-26 11:59:07,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:59:07,274 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 2730 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:07,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 2630 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:59:07,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24937 states. [2023-11-26 11:59:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24937 to 19133. [2023-11-26 11:59:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19133 states, 16100 states have (on average 1.6990062111801243) internal successors, (27354), 16167 states have internal predecessors, (27354), 2940 states have call successors, (2940), 92 states have call predecessors, (2940), 92 states have return successors, (2940), 2873 states have call predecessors, (2940), 2940 states have call successors, (2940) [2023-11-26 11:59:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19133 states to 19133 states and 33234 transitions. [2023-11-26 11:59:09,307 INFO L78 Accepts]: Start accepts. Automaton has 19133 states and 33234 transitions. Word has length 668 [2023-11-26 11:59:09,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:59:09,308 INFO L495 AbstractCegarLoop]: Abstraction has 19133 states and 33234 transitions. [2023-11-26 11:59:09,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-26 11:59:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 19133 states and 33234 transitions. [2023-11-26 11:59:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-26 11:59:09,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:09,340 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:09,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-26 11:59:09,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:59:09,549 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:09,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash 861932287, now seen corresponding path program 1 times [2023-11-26 11:59:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:09,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938291235] [2023-11-26 11:59:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:09,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:59:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772911706] [2023-11-26 11:59:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:09,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:09,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:09,634 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:09,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_833d91bc-5497-43f0-af2c-f2888c5114bf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:59:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:10,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:59:10,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10578 proven. 144 refuted. 0 times theorem prover too weak. 10290 trivial. 0 not checked. [2023-11-26 11:59:10,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:59:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 162 proven. 144 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-26 11:59:11,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:11,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938291235] [2023-11-26 11:59:11,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:59:11,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772911706] [2023-11-26 11:59:11,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772911706] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:59:11,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:59:11,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 11:59:11,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954676568] [2023-11-26 11:59:11,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:59:11,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:59:11,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:11,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:59:11,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:59:11,321 INFO L87 Difference]: Start difference. First operand 19133 states and 33234 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-11-26 11:59:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:13,388 INFO L93 Difference]: Finished difference Result 38243 states and 66308 transitions. [2023-11-26 11:59:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:59:13,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) Word has length 668 [2023-11-26 11:59:13,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:13,449 INFO L225 Difference]: With dead ends: 38243 [2023-11-26 11:59:13,449 INFO L226 Difference]: Without dead ends: 19225 [2023-11-26 11:59:13,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1338 GetRequests, 1328 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:59:13,476 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 650 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:13,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1196 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:59:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19225 states.