./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU --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 904ada5b631ac9ba69e93f7c5eb51a71b3a5f4ed245a1ea57aa3fec5e9b98c37 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:42,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:42,676 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:01:42,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:42,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:42,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:42,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:42,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:42,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:01:42,726 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:01:42,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:42,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:42,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:42,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:42,730 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:42,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:42,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:01:42,732 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:01:42,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:42,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:01:42,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:42,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:01:42,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:42,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:01:42,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:42,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:01:42,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:01:42,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:42,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:42,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:42,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:01:42,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:42,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:42,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:42,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:42,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:01:42,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:42,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:42,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:42,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:42,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:42,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:42,742 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_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 904ada5b631ac9ba69e93f7c5eb51a71b3a5f4ed245a1ea57aa3fec5e9b98c37 [2024-10-31 22:01:43,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:43,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:43,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:43,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:43,078 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:43,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i Unable to find full path for "g++" [2024-10-31 22:01:45,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:45,366 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:45,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i [2024-10-31 22:01:45,375 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/data/42de541bf/e17584a639b14012b2b6ffe14d72c8c4/FLAGaa27eefad [2024-10-31 22:01:45,737 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/data/42de541bf/e17584a639b14012b2b6ffe14d72c8c4 [2024-10-31 22:01:45,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:45,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:45,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:45,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:45,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:45,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:45" (1/1) ... [2024-10-31 22:01:45,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590384d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:45, skipping insertion in model container [2024-10-31 22:01:45,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:45" (1/1) ... [2024-10-31 22:01:45,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:46,000 WARN L251 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_70b50849-ec07-4b4c-9b2b-f63d9ef36857/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2024-10-31 22:01:46,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:46,039 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:46,053 WARN L251 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_70b50849-ec07-4b4c-9b2b-f63d9ef36857/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2024-10-31 22:01:46,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:46,092 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:46,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46 WrapperNode [2024-10-31 22:01:46,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:46,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:46,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:46,094 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:46,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,138 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 196 [2024-10-31 22:01:46,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:46,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:46,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:46,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:46,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,179 INFO L175 MemorySlicer]: Split 24 memory accesses to 11 slices as follows [2, 2, 2, 3, 2, 2, 3, 2, 2, 2, 2]. 13 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 11 writes are split as follows [0, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1]. [2024-10-31 22:01:46,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:46,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:46,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:46,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:46,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:46,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:46,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:46,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:01:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:01:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:01:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:01:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 22:01:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 22:01:46,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-31 22:01:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-31 22:01:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-31 22:01:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-31 22:01:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-31 22:01:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:01:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:01:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:01:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:01:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:01:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-31 22:01:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-31 22:01:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-31 22:01:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-31 22:01:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-31 22:01:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-31 22:01:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-31 22:01:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:46,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:01:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:01:46,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:01:46,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:01:46,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-31 22:01:46,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-31 22:01:46,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-31 22:01:46,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-31 22:01:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-31 22:01:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-31 22:01:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-31 22:01:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:01:46,501 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:46,503 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:46,897 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-10-31 22:01:46,897 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:46,917 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:46,917 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-31 22:01:46,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:46 BoogieIcfgContainer [2024-10-31 22:01:46,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:46,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:46,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:46,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:46,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:45" (1/3) ... [2024-10-31 22:01:46,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484ad09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:46, skipping insertion in model container [2024-10-31 22:01:46,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (2/3) ... [2024-10-31 22:01:46,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484ad09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:46, skipping insertion in model container [2024-10-31 22:01:46,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:46" (3/3) ... [2024-10-31 22:01:46,932 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-1.i [2024-10-31 22:01:46,952 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:46,952 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:01:47,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:47,039 INFO L333 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, 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;@533f0735, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:47,040 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:01:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.6) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-31 22:01:47,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:47,052 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:47,053 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:01:47,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1887916137, now seen corresponding path program 1 times [2024-10-31 22:01:47,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:47,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547003566] [2024-10-31 22:01:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:47,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:47,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:47,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547003566] [2024-10-31 22:01:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547003566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:47,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:47,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:47,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773569874] [2024-10-31 22:01:47,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:47,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:47,515 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.6) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:47,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:47,555 INFO L93 Difference]: Finished difference Result 82 states and 126 transitions. [2024-10-31 22:01:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:47,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-31 22:01:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:47,565 INFO L225 Difference]: With dead ends: 82 [2024-10-31 22:01:47,565 INFO L226 Difference]: Without dead ends: 40 [2024-10-31 22:01:47,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:47,571 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:47,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 97 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:01:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-31 22:01:47,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-10-31 22:01:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-10-31 22:01:47,612 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 25 [2024-10-31 22:01:47,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:47,612 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-10-31 22:01:47,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-10-31 22:01:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-31 22:01:47,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:47,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:47,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:47,615 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:01:47,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash -166940861, now seen corresponding path program 1 times [2024-10-31 22:01:47,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:47,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384216437] [2024-10-31 22:01:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:47,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:47,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:47,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384216437] [2024-10-31 22:01:47,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384216437] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:47,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482499453] [2024-10-31 22:01:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:47,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:47,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:47,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:47,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:01:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:48,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:01:48,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:48,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:01:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482499453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:48,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:01:48,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-31 22:01:48,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666477355] [2024-10-31 22:01:48,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:48,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:48,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:01:48,076 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:48,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:48,209 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2024-10-31 22:01:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:48,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-31 22:01:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:48,211 INFO L225 Difference]: With dead ends: 88 [2024-10-31 22:01:48,211 INFO L226 Difference]: Without dead ends: 57 [2024-10-31 22:01:48,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:01:48,213 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:48,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:01:48,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-31 22:01:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2024-10-31 22:01:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-10-31 22:01:48,220 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27 [2024-10-31 22:01:48,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:48,221 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-10-31 22:01:48,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:48,221 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-10-31 22:01:48,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-31 22:01:48,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:48,222 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:48,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:01:48,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:48,424 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:01:48,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:48,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1109508687, now seen corresponding path program 1 times [2024-10-31 22:01:48,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:48,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138581831] [2024-10-31 22:01:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:48,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:48,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138581831] [2024-10-31 22:01:48,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138581831] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180158807] [2024-10-31 22:01:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:48,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:48,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:48,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:01:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:48,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:01:48,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:48,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:48,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180158807] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:48,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:48,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-31 22:01:48,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991600673] [2024-10-31 22:01:48,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:48,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:01:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:01:48,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:01:48,874 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:48,916 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2024-10-31 22:01:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:48,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-31 22:01:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:48,918 INFO L225 Difference]: With dead ends: 97 [2024-10-31 22:01:48,918 INFO L226 Difference]: Without dead ends: 54 [2024-10-31 22:01:48,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:01:48,920 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:48,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 134 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:01:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-31 22:01:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-10-31 22:01:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-10-31 22:01:48,928 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 45 [2024-10-31 22:01:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:48,928 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-10-31 22:01:48,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-10-31 22:01:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-31 22:01:48,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:48,930 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:48,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:01:49,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:49,134 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:01:49,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1235875349, now seen corresponding path program 2 times [2024-10-31 22:01:49,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:49,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369423602] [2024-10-31 22:01:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:01:49,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:49,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369423602] [2024-10-31 22:01:49,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369423602] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:49,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775093024] [2024-10-31 22:01:49,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:01:49,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:49,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:49,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:49,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:01:49,460 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:01:49,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:49,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:01:49,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:49,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:49,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775093024] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:49,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-10-31 22:01:49,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317484767] [2024-10-31 22:01:49,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:49,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:01:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:49,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:01:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:01:49,698 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:49,932 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2024-10-31 22:01:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:01:49,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-31 22:01:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:49,934 INFO L225 Difference]: With dead ends: 136 [2024-10-31 22:01:49,934 INFO L226 Difference]: Without dead ends: 93 [2024-10-31 22:01:49,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:01:49,936 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:49,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 89 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:01:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-31 22:01:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2024-10-31 22:01:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 83 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2024-10-31 22:01:49,953 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 51 [2024-10-31 22:01:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:49,953 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2024-10-31 22:01:49,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2024-10-31 22:01:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-31 22:01:49,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:49,960 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:49,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:01:50,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:50,161 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:01:50,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:50,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2120427341, now seen corresponding path program 3 times [2024-10-31 22:01:50,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:50,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222934533] [2024-10-31 22:01:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:50,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:01:50,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:50,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222934533] [2024-10-31 22:01:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222934533] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442369172] [2024-10-31 22:01:50,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:01:50,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:50,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:50,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:50,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:01:50,993 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-31 22:01:50,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:50,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:01:50,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-31 22:01:51,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-31 22:01:51,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442369172] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:51,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:51,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-10-31 22:01:51,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907270553] [2024-10-31 22:01:51,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:51,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:01:51,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:51,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:01:51,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:01:51,153 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 19 states, 19 states have (on average 5.631578947368421) internal successors, (107), 19 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:51,661 INFO L93 Difference]: Finished difference Result 220 states and 276 transitions. [2024-10-31 22:01:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-31 22:01:51,663 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.631578947368421) internal successors, (107), 19 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-10-31 22:01:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:51,664 INFO L225 Difference]: With dead ends: 220 [2024-10-31 22:01:51,664 INFO L226 Difference]: Without dead ends: 159 [2024-10-31 22:01:51,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:01:51,669 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 99 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:51,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 141 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:01:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-10-31 22:01:51,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2024-10-31 22:01:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.070063694267516) internal successors, (168), 157 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2024-10-31 22:01:51,701 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 81 [2024-10-31 22:01:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:51,701 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2024-10-31 22:01:51,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.631578947368421) internal successors, (107), 19 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:51,702 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2024-10-31 22:01:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-31 22:01:51,707 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:51,707 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:51,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:01:51,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:51,908 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:01:51,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1529021629, now seen corresponding path program 4 times [2024-10-31 22:01:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:51,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170846655] [2024-10-31 22:01:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:51,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-10-31 22:01:52,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:52,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170846655] [2024-10-31 22:01:52,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170846655] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:52,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672737460] [2024-10-31 22:01:52,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:01:52,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:52,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:52,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:52,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:01:53,028 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:01:53,028 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:53,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:01:53,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2024-10-31 22:01:53,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2024-10-31 22:01:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672737460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:53,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:53,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-10-31 22:01:53,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607620403] [2024-10-31 22:01:53,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:53,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-31 22:01:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-31 22:01:53,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-10-31 22:01:53,432 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:54,337 INFO L93 Difference]: Finished difference Result 438 states and 530 transitions. [2024-10-31 22:01:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-31 22:01:54,338 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2024-10-31 22:01:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:54,341 INFO L225 Difference]: With dead ends: 438 [2024-10-31 22:01:54,341 INFO L226 Difference]: Without dead ends: 305 [2024-10-31 22:01:54,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-10-31 22:01:54,343 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 251 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:54,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 142 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:01:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-10-31 22:01:54,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2024-10-31 22:01:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.0363036303630364) internal successors, (314), 303 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 314 transitions. [2024-10-31 22:01:54,374 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 314 transitions. Word has length 155 [2024-10-31 22:01:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:54,374 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 314 transitions. [2024-10-31 22:01:54,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 314 transitions. [2024-10-31 22:01:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-10-31 22:01:54,384 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:54,384 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:54,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:01:54,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:01:54,585 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:01:54,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:54,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1642142321, now seen corresponding path program 5 times [2024-10-31 22:01:54,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:54,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547579636] [2024-10-31 22:01:54,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:54,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2024-10-31 22:01:56,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:56,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547579636] [2024-10-31 22:01:56,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547579636] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952210512] [2024-10-31 22:01:56,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:01:56,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:56,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:56,190 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:56,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70b50849-ec07-4b4c-9b2b-f63d9ef36857/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process