./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/gcas_10_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/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_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/gcas_10_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/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_2f94a663-76a0-439e-8361-32bce090ac9b/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 6735ae9e1ccddbe6f18319f9a34a2643278156bd78b294dfc3f0746585993fa3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:49:03,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:49:04,001 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:49:04,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:49:04,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:49:04,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:49:04,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:49:04,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:49:04,037 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:49:04,037 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:49:04,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:49:04,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:49:04,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:49:04,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:49:04,041 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:49:04,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:49:04,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:49:04,042 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:49:04,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:49:04,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:49:04,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:49:04,045 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:49:04,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:49:04,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:49:04,046 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:49:04,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:49:04,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:49:04,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:49:04,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:49:04,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:49:04,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:49:04,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:04,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:49:04,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:49:04,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:49:04,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:49:04,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:49:04,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:49:04,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:49:04,052 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:49:04,052 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:49:04,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:49:04,052 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_2f94a663-76a0-439e-8361-32bce090ac9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6735ae9e1ccddbe6f18319f9a34a2643278156bd78b294dfc3f0746585993fa3 [2023-11-26 10:49:04,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:49:04,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:49:04,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:49:04,350 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:49:04,351 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:49:04,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/neural-networks/gcas_10_safe.c-amalgamation.i [2023-11-26 10:49:07,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:49:08,043 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:49:08,044 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/sv-benchmarks/c/neural-networks/gcas_10_safe.c-amalgamation.i [2023-11-26 10:49:08,099 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/data/e1787ddb5/f0f1cfd9ae7e4fe28c0c57d98962b232/FLAG7f0a37235 [2023-11-26 10:49:08,118 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/data/e1787ddb5/f0f1cfd9ae7e4fe28c0c57d98962b232 [2023-11-26 10:49:08,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:49:08,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:49:08,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:08,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:49:08,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:49:08,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:08" (1/1) ... [2023-11-26 10:49:08,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40bd7971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:08, skipping insertion in model container [2023-11-26 10:49:08,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:08" (1/1) ... [2023-11-26 10:49:08,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:49:09,359 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_2f94a663-76a0-439e-8361-32bce090ac9b/sv-benchmarks/c/neural-networks/gcas_10_safe.c-amalgamation.i[65239,65252] [2023-11-26 10:49:09,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:09,701 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:49:09,788 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_2f94a663-76a0-439e-8361-32bce090ac9b/sv-benchmarks/c/neural-networks/gcas_10_safe.c-amalgamation.i[65239,65252] [2023-11-26 10:49:09,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:10,251 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:49:10,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10 WrapperNode [2023-11-26 10:49:10,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:10,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:10,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:49:10,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:49:10,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,521 INFO L138 Inliner]: procedures = 619, calls = 2157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 2547 [2023-11-26 10:49:10,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:10,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:49:10,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:49:10,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:49:10,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,591 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,640 INFO L175 MemorySlicer]: Split 2133 memory accesses to 12 slices as follows [2, 7, 449, 33, 1025, 33, 449, 15, 38, 36, 43, 3]. 48 percent of accesses are in the largest equivalence class. The 2071 initializations are split as follows [2, 7, 448, 32, 1024, 32, 448, 14, 32, 32, 0, 0]. The 19 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 14, 1]. [2023-11-26 10:49:10,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:49:10,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:49:10,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:49:10,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:49:10,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (1/1) ... [2023-11-26 10:49:10,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:10,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:49:10,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:49:10,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-26 10:49:10,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-26 10:49:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-26 10:49:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-26 10:49:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-26 10:49:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-26 10:49:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-26 10:49:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-26 10:49:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-26 10:49:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-26 10:49:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-26 10:49:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-26 10:49:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:49:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-26 10:49:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-26 10:49:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-26 10:49:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-26 10:49:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-26 10:49:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-26 10:49:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-26 10:49:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-26 10:49:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-26 10:49:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-26 10:49:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-26 10:49:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-26 10:49:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-26 10:49:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-26 10:49:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-26 10:49:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-26 10:49:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-26 10:49:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-26 10:49:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-26 10:49:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-26 10:49:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-26 10:49:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-26 10:49:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-26 10:49:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-26 10:49:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:49:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:49:10,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:49:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:49:10,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:49:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:49:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:49:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:49:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:49:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:49:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 10:49:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 10:49:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 10:49:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 10:49:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 10:49:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 10:49:11,168 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:49:11,171 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:49:15,055 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:49:15,262 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:49:15,263 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-26 10:49:15,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:15 BoogieIcfgContainer [2023-11-26 10:49:15,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:49:15,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:49:15,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:49:15,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:49:15,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:49:08" (1/3) ... [2023-11-26 10:49:15,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea911ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:15, skipping insertion in model container [2023-11-26 10:49:15,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:10" (2/3) ... [2023-11-26 10:49:15,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea911ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:15, skipping insertion in model container [2023-11-26 10:49:15,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:15" (3/3) ... [2023-11-26 10:49:15,272 INFO L112 eAbstractionObserver]: Analyzing ICFG gcas_10_safe.c-amalgamation.i [2023-11-26 10:49:15,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:49:15,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:49:15,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:15,357 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;@11d9d54a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:15,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:49:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 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) [2023-11-26 10:49:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 10:49:15,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:15,374 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:15,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:15,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash -781333683, now seen corresponding path program 1 times [2023-11-26 10:49:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111221889] [2023-11-26 10:49:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:15,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:16,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111221889] [2023-11-26 10:49:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111221889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:16,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545501238] [2023-11-26 10:49:16,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:16,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:49:16,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:49:16,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:49:16,375 INFO L87 Difference]: Start difference. First operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 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 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2023-11-26 10:49:16,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:16,835 INFO L93 Difference]: Finished difference Result 147 states and 251 transitions. [2023-11-26 10:49:16,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:49:16,838 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 56 [2023-11-26 10:49:16,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:16,849 INFO L225 Difference]: With dead ends: 147 [2023-11-26 10:49:16,849 INFO L226 Difference]: Without dead ends: 73 [2023-11-26 10:49:16,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:49:16,856 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:16,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:49:16,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-26 10:49:16,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-26 10:49:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 72 states have internal predecessors, (100), 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) [2023-11-26 10:49:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2023-11-26 10:49:16,898 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 56 [2023-11-26 10:49:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:16,898 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2023-11-26 10:49:16,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2023-11-26 10:49:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2023-11-26 10:49:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 10:49:16,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:16,902 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:16,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:49:16,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:16,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:16,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2129147117, now seen corresponding path program 1 times [2023-11-26 10:49:16,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:16,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976227102] [2023-11-26 10:49:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:16,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:17,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976227102] [2023-11-26 10:49:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976227102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:17,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:17,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948565199] [2023-11-26 10:49:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:17,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:17,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:17,552 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-26 10:49:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:18,318 INFO L93 Difference]: Finished difference Result 138 states and 189 transitions. [2023-11-26 10:49:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:18,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-26 10:49:18,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:18,327 INFO L225 Difference]: With dead ends: 138 [2023-11-26 10:49:18,327 INFO L226 Difference]: Without dead ends: 73 [2023-11-26 10:49:18,328 INFO L412 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 [2023-11-26 10:49:18,329 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:18,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:49:18,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-26 10:49:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-26 10:49:18,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.375) internal successors, (99), 72 states have internal predecessors, (99), 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) [2023-11-26 10:49:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2023-11-26 10:49:18,352 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 56 [2023-11-26 10:49:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:18,352 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2023-11-26 10:49:18,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-26 10:49:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2023-11-26 10:49:18,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 10:49:18,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:18,355 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:18,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:49:18,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:18,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2113628399, now seen corresponding path program 1 times [2023-11-26 10:49:18,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:18,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623911306] [2023-11-26 10:49:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:18,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:18,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:18,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623911306] [2023-11-26 10:49:18,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623911306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:18,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:18,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:18,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984635159] [2023-11-26 10:49:18,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:18,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:18,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:18,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:18,982 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-26 10:49:19,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:19,466 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2023-11-26 10:49:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:19,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-26 10:49:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:19,468 INFO L225 Difference]: With dead ends: 105 [2023-11-26 10:49:19,468 INFO L226 Difference]: Without dead ends: 73 [2023-11-26 10:49:19,469 INFO L412 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 [2023-11-26 10:49:19,470 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:19,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:49:19,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-26 10:49:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-26 10:49:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 states have internal predecessors, (98), 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) [2023-11-26 10:49:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2023-11-26 10:49:19,479 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 56 [2023-11-26 10:49:19,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:19,480 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2023-11-26 10:49:19,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-26 10:49:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2023-11-26 10:49:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 10:49:19,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:19,482 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:19,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:49:19,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:19,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1092560045, now seen corresponding path program 1 times [2023-11-26 10:49:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438916409] [2023-11-26 10:49:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:20,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:20,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438916409] [2023-11-26 10:49:20,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438916409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:20,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:20,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:20,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680884223] [2023-11-26 10:49:20,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:20,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:20,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:20,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:20,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:20,082 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-26 10:49:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:20,779 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2023-11-26 10:49:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:20,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-26 10:49:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:20,781 INFO L225 Difference]: With dead ends: 76 [2023-11-26 10:49:20,782 INFO L226 Difference]: Without dead ends: 73 [2023-11-26 10:49:20,782 INFO L412 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 [2023-11-26 10:49:20,783 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:20,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:49:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-26 10:49:20,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-26 10:49:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 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) [2023-11-26 10:49:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2023-11-26 10:49:20,794 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 56 [2023-11-26 10:49:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:20,795 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-26 10:49:20,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-26 10:49:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2023-11-26 10:49:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 10:49:20,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:20,799 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:20,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:49:20,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:20,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1092561967, now seen corresponding path program 1 times [2023-11-26 10:49:20,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:20,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865147361] [2023-11-26 10:49:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:21,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:21,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865147361] [2023-11-26 10:49:21,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865147361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:21,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:21,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:21,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526670211] [2023-11-26 10:49:21,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:21,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:21,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:21,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:21,505 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-26 10:49:22,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:22,250 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2023-11-26 10:49:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:22,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-26 10:49:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:22,253 INFO L225 Difference]: With dead ends: 97 [2023-11-26 10:49:22,253 INFO L226 Difference]: Without dead ends: 76 [2023-11-26 10:49:22,253 INFO L412 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 [2023-11-26 10:49:22,254 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:22,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:49:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-26 10:49:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-11-26 10:49:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 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) [2023-11-26 10:49:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2023-11-26 10:49:22,262 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 56 [2023-11-26 10:49:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:22,263 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2023-11-26 10:49:22,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-26 10:49:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2023-11-26 10:49:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 10:49:22,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:22,265 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:22,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:49:22,265 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:22,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:22,266 INFO L85 PathProgramCache]: Analyzing trace with hash 986750680, now seen corresponding path program 1 times [2023-11-26 10:49:22,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:22,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073935359] [2023-11-26 10:49:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:22,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:23,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073935359] [2023-11-26 10:49:23,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073935359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:23,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390268795] [2023-11-26 10:49:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:23,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:23,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:23,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:23,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:49:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:24,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:49:24,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:24,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:49:24,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390268795] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:24,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:49:24,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-26 10:49:24,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788457722] [2023-11-26 10:49:24,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:24,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:24,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:49:24,430 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-11-26 10:49:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:25,095 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2023-11-26 10:49:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:25,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2023-11-26 10:49:25,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:25,097 INFO L225 Difference]: With dead ends: 86 [2023-11-26 10:49:25,097 INFO L226 Difference]: Without dead ends: 75 [2023-11-26 10:49:25,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:49:25,098 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:25,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:49:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-26 10:49:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-26 10:49:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.337837837837838) internal successors, (99), 74 states have internal predecessors, (99), 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) [2023-11-26 10:49:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2023-11-26 10:49:25,105 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 59 [2023-11-26 10:49:25,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:25,106 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2023-11-26 10:49:25,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-11-26 10:49:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2023-11-26 10:49:25,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 10:49:25,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:25,108 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:25,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:49:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:25,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:25,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash -985336725, now seen corresponding path program 1 times [2023-11-26 10:49:25,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:25,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641044076] [2023-11-26 10:49:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:25,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:49:26,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:26,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641044076] [2023-11-26 10:49:26,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641044076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:26,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876587161] [2023-11-26 10:49:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:26,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:26,049 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:26,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:49:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:26,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:49:26,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:49:27,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:49:27,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876587161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:27,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:49:27,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-26 10:49:27,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459785941] [2023-11-26 10:49:27,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:27,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:49:27,020 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-26 10:49:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:27,880 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2023-11-26 10:49:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:27,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2023-11-26 10:49:27,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:27,883 INFO L225 Difference]: With dead ends: 107 [2023-11-26 10:49:27,883 INFO L226 Difference]: Without dead ends: 80 [2023-11-26 10:49:27,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:49:27,884 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:27,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:49:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-26 10:49:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2023-11-26 10:49:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 75 states have internal predecessors, (100), 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) [2023-11-26 10:49:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2023-11-26 10:49:27,902 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 62 [2023-11-26 10:49:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:27,902 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2023-11-26 10:49:27,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-26 10:49:27,903 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2023-11-26 10:49:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 10:49:27,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:27,908 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:27,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:28,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:28,122 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:28,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1664813890, now seen corresponding path program 1 times [2023-11-26 10:49:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:28,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229273459] [2023-11-26 10:49:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:28,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:49:28,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229273459] [2023-11-26 10:49:28,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229273459] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:28,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223554634] [2023-11-26 10:49:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:28,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:28,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:28,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:28,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:49:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:29,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:49:29,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:49:29,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:49:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223554634] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:29,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:49:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-26 10:49:29,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707342741] [2023-11-26 10:49:29,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:49:29,893 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-11-26 10:49:30,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:30,505 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2023-11-26 10:49:30,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:30,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-11-26 10:49:30,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:30,506 INFO L225 Difference]: With dead ends: 93 [2023-11-26 10:49:30,507 INFO L226 Difference]: Without dead ends: 77 [2023-11-26 10:49:30,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:49:30,508 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:30,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:49:30,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-26 10:49:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-26 10:49:30,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 76 states have internal predecessors, (101), 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) [2023-11-26 10:49:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2023-11-26 10:49:30,514 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 65 [2023-11-26 10:49:30,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:30,514 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2023-11-26 10:49:30,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-11-26 10:49:30,514 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2023-11-26 10:49:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 10:49:30,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:30,515 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:30,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:30,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:30,716 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:30,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1900472348, now seen corresponding path program 1 times [2023-11-26 10:49:30,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:30,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040923479] [2023-11-26 10:49:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:30,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:49:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:31,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040923479] [2023-11-26 10:49:31,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040923479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:31,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269129446] [2023-11-26 10:49:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:31,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:31,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:31,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:31,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:49:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:32,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:49:32,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:49:32,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:49:32,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269129446] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:32,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:49:32,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-26 10:49:32,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329392116] [2023-11-26 10:49:32,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:32,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:32,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:32,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:32,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:49:32,514 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2023-11-26 10:49:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:33,137 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2023-11-26 10:49:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:33,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2023-11-26 10:49:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:33,138 INFO L225 Difference]: With dead ends: 83 [2023-11-26 10:49:33,138 INFO L226 Difference]: Without dead ends: 78 [2023-11-26 10:49:33,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:49:33,140 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:33,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:49:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-26 10:49:33,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-26 10:49:33,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 77 states have internal predecessors, (102), 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) [2023-11-26 10:49:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2023-11-26 10:49:33,146 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 68 [2023-11-26 10:49:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:33,146 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2023-11-26 10:49:33,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2023-11-26 10:49:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2023-11-26 10:49:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 10:49:33,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:33,148 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:33,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:33,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:33,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:33,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1506015068, now seen corresponding path program 1 times [2023-11-26 10:49:33,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:33,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401079226] [2023-11-26 10:49:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:33,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:49:34,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401079226] [2023-11-26 10:49:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401079226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571783208] [2023-11-26 10:49:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:34,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:34,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:34,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:49:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:35,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:49:35,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:49:35,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:49:35,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571783208] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:35,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:35,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 10:49:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041642557] [2023-11-26 10:49:35,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:35,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:49:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:35,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:49:35,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:49:35,171 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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) [2023-11-26 10:49:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:36,778 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2023-11-26 10:49:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:49:36,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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 71 [2023-11-26 10:49:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:36,780 INFO L225 Difference]: With dead ends: 111 [2023-11-26 10:49:36,780 INFO L226 Difference]: Without dead ends: 87 [2023-11-26 10:49:36,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:49:36,782 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 11 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:36,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 463 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 10:49:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-26 10:49:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-26 10:49:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 86 states have internal predecessors, (114), 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) [2023-11-26 10:49:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2023-11-26 10:49:36,788 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 71 [2023-11-26 10:49:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:36,789 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2023-11-26 10:49:36,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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) [2023-11-26 10:49:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2023-11-26 10:49:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 10:49:36,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:36,790 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:36,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:37,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:37,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:37,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1738722315, now seen corresponding path program 2 times [2023-11-26 10:49:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:37,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600005076] [2023-11-26 10:49:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:49:37,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:37,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600005076] [2023-11-26 10:49:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600005076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:37,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078974397] [2023-11-26 10:49:37,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:49:37,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:37,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:37,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:37,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:49:39,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:49:39,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:49:39,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:49:39,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:49:39,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:49:39,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078974397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:39,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:39,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2023-11-26 10:49:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750080248] [2023-11-26 10:49:39,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:39,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:49:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:39,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:49:39,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:49:39,267 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2023-11-26 10:49:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:40,903 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2023-11-26 10:49:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:49:40,904 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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 80 [2023-11-26 10:49:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:40,905 INFO L225 Difference]: With dead ends: 125 [2023-11-26 10:49:40,906 INFO L226 Difference]: Without dead ends: 101 [2023-11-26 10:49:40,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:49:40,907 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 25 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:40,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 475 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 10:49:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-26 10:49:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-11-26 10:49:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 98 states have internal predecessors, (130), 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) [2023-11-26 10:49:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2023-11-26 10:49:40,915 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 80 [2023-11-26 10:49:40,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:40,916 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2023-11-26 10:49:40,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2023-11-26 10:49:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2023-11-26 10:49:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-26 10:49:40,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:40,918 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:40,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:41,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 10:49:41,132 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:41,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1779525407, now seen corresponding path program 3 times [2023-11-26 10:49:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:41,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126967236] [2023-11-26 10:49:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:41,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:49:42,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:42,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126967236] [2023-11-26 10:49:42,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126967236] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:42,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876219409] [2023-11-26 10:49:42,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:49:42,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:42,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:42,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:42,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:49:43,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 10:49:43,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:49:43,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:49:43,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-26 10:49:43,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-26 10:49:43,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876219409] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:43,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:49:43,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 12 [2023-11-26 10:49:43,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587696727] [2023-11-26 10:49:43,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:43,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:43,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:43,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:43,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:49:43,781 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-11-26 10:49:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:44,375 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2023-11-26 10:49:44,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:44,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 92 [2023-11-26 10:49:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:44,377 INFO L225 Difference]: With dead ends: 131 [2023-11-26 10:49:44,377 INFO L226 Difference]: Without dead ends: 100 [2023-11-26 10:49:44,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:49:44,378 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:44,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:49:44,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-26 10:49:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-26 10:49:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 99 states have internal predecessors, (131), 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) [2023-11-26 10:49:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2023-11-26 10:49:44,385 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 92 [2023-11-26 10:49:44,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:44,386 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2023-11-26 10:49:44,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-11-26 10:49:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2023-11-26 10:49:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 10:49:44,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:44,387 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:44,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-26 10:49:44,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 10:49:44,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:44,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:44,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1876763282, now seen corresponding path program 1 times [2023-11-26 10:49:44,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:44,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471082983] [2023-11-26 10:49:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:49:45,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:45,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471082983] [2023-11-26 10:49:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471082983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99850710] [2023-11-26 10:49:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:45,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:45,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:45,655 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:45,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:49:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:46,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-26 10:49:46,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:49:46,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 10:49:46,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99850710] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:46,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:46,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2023-11-26 10:49:46,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638952798] [2023-11-26 10:49:46,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:46,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 10:49:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 10:49:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-26 10:49:46,891 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 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) [2023-11-26 10:49:49,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:49,584 INFO L93 Difference]: Finished difference Result 157 states and 213 transitions. [2023-11-26 10:49:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 10:49:49,585 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 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 95 [2023-11-26 10:49:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:49,586 INFO L225 Difference]: With dead ends: 157 [2023-11-26 10:49:49,586 INFO L226 Difference]: Without dead ends: 123 [2023-11-26 10:49:49,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2023-11-26 10:49:49,587 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 53 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:49,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 831 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 10:49:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-26 10:49:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2023-11-26 10:49:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.325) internal successors, (159), 120 states have internal predecessors, (159), 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) [2023-11-26 10:49:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2023-11-26 10:49:49,595 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 95 [2023-11-26 10:49:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:49,595 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2023-11-26 10:49:49,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 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) [2023-11-26 10:49:49,596 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2023-11-26 10:49:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-26 10:49:49,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:49,597 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:49,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:49,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:49,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:49:49,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash -850297529, now seen corresponding path program 2 times [2023-11-26 10:49:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:49,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793736274] [2023-11-26 10:49:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:49,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 10:49:50,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:50,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793736274] [2023-11-26 10:49:50,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793736274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:50,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960795328] [2023-11-26 10:49:50,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:49:50,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:50,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:50,947 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:50,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f94a663-76a0-439e-8361-32bce090ac9b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:49:52,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:49:52,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:49:52,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:49:52,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-26 10:49:52,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:49:52,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960795328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:52,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:49:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-26 10:49:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879267690] [2023-11-26 10:49:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:52,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:52,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:52,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:49:52,615 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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)