./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/Mono3_1.c --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_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/Mono3_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya --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 0756a7f5fb7c80ee6b59c75ec6cf9015a96d2c6a2bbe84a426dbe33a7087e683 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:51:54,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:51:54,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:51:54,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:51:54,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:51:54,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:51:54,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:51:54,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:51:54,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:51:54,613 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:51:54,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:51:54,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:51:54,615 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:51:54,615 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:51:54,616 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:51:54,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:51:54,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:51:54,618 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:51:54,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:51:54,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:51:54,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:51:54,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:51:54,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:51:54,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:51:54,621 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:51:54,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:51:54,623 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:51:54,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:51:54,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:51:54,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:51:54,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:51:54,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:51:54,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:51:54,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:51:54,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:51:54,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:51:54,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:51:54,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:51:54,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:51:54,626 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:51:54,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:51:54,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:51:54,627 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_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0756a7f5fb7c80ee6b59c75ec6cf9015a96d2c6a2bbe84a426dbe33a7087e683 [2023-11-29 00:51:54,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:51:54,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:51:54,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:51:54,867 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:51:54,867 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:51:54,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loops-crafted-1/Mono3_1.c [2023-11-29 00:51:57,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:51:57,792 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:51:57,792 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/sv-benchmarks/c/loops-crafted-1/Mono3_1.c [2023-11-29 00:51:57,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/data/98101e360/1c4c95cee66d4ee695783aa1fe41d55b/FLAGfc36076eb [2023-11-29 00:51:57,815 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/data/98101e360/1c4c95cee66d4ee695783aa1fe41d55b [2023-11-29 00:51:57,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:51:57,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:51:57,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:51:57,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:51:57,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:51:57,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:51:57" (1/1) ... [2023-11-29 00:51:57,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a0994f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:57, skipping insertion in model container [2023-11-29 00:51:57,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:51:57" (1/1) ... [2023-11-29 00:51:57,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:51:57,995 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_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/sv-benchmarks/c/loops-crafted-1/Mono3_1.c[311,324] [2023-11-29 00:51:58,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:51:58,016 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:51:58,028 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_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/sv-benchmarks/c/loops-crafted-1/Mono3_1.c[311,324] [2023-11-29 00:51:58,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:51:58,044 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:51:58,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58 WrapperNode [2023-11-29 00:51:58,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:51:58,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:51:58,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:51:58,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:51:58,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,077 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2023-11-29 00:51:58,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:51:58,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:51:58,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:51:58,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:51:58,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,101 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:51:58,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:51:58,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:51:58,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:51:58,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:51:58,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (1/1) ... [2023-11-29 00:51:58,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:51:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:51:58,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:51:58,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:51:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:51:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:51:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:51:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:51:58,247 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:51:58,249 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:51:58,341 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:51:58,360 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:51:58,360 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:51:58,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:51:58 BoogieIcfgContainer [2023-11-29 00:51:58,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:51:58,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:51:58,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:51:58,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:51:58,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:51:57" (1/3) ... [2023-11-29 00:51:58,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a607675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:51:58, skipping insertion in model container [2023-11-29 00:51:58,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:51:58" (2/3) ... [2023-11-29 00:51:58,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a607675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:51:58, skipping insertion in model container [2023-11-29 00:51:58,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:51:58" (3/3) ... [2023-11-29 00:51:58,371 INFO L112 eAbstractionObserver]: Analyzing ICFG Mono3_1.c [2023-11-29 00:51:58,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:51:58,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:51:58,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:51:58,442 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;@5f249930, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:51:58,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:51:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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) [2023-11-29 00:51:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 00:51:58,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:51:58,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:51:58,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:51:58,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 62493671, now seen corresponding path program 1 times [2023-11-29 00:51:58,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:51:58,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876251266] [2023-11-29 00:51:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:58,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:51:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:58,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:51:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876251266] [2023-11-29 00:51:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876251266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:51:58,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:51:58,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:51:58,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323965123] [2023-11-29 00:51:58,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:58,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:51:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:51:58,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:51:58,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:51:58,643 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-29 00:51:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:51:58,663 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2023-11-29 00:51:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:51:58,667 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-29 00:51:58,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:51:58,674 INFO L225 Difference]: With dead ends: 16 [2023-11-29 00:51:58,674 INFO L226 Difference]: Without dead ends: 8 [2023-11-29 00:51:58,677 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 [2023-11-29 00:51:58,681 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:51:58,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:51:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-29 00:51:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-29 00:51:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2023-11-29 00:51:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-11-29 00:51:58,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2023-11-29 00:51:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:51:58,713 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-11-29 00:51:58,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-29 00:51:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-11-29 00:51:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 00:51:58,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:51:58,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:51:58,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:51:58,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:51:58,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash 62165970, now seen corresponding path program 1 times [2023-11-29 00:51:58,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:51:58,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557579377] [2023-11-29 00:51:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:58,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:51:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:58,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:51:58,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557579377] [2023-11-29 00:51:58,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557579377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:51:58,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:51:58,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:51:58,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813822751] [2023-11-29 00:51:58,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:58,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:51:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:51:58,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:51:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:51:58,820 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-29 00:51:58,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:51:58,843 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2023-11-29 00:51:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:51:58,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-29 00:51:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:51:58,844 INFO L225 Difference]: With dead ends: 18 [2023-11-29 00:51:58,844 INFO L226 Difference]: Without dead ends: 11 [2023-11-29 00:51:58,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:51:58,846 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:51:58,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:51:58,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-29 00:51:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2023-11-29 00:51:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2023-11-29 00:51:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-11-29 00:51:58,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2023-11-29 00:51:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:51:58,852 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-11-29 00:51:58,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-29 00:51:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-11-29 00:51:58,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 00:51:58,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:51:58,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:51:58,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:51:58,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:51:58,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:58,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1900464389, now seen corresponding path program 1 times [2023-11-29 00:51:58,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:51:58,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333080069] [2023-11-29 00:51:58,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:58,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:51:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:58,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:51:58,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333080069] [2023-11-29 00:51:58,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333080069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:51:58,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035547283] [2023-11-29 00:51:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:58,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:51:58,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:51:58,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:51:59,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:51:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:59,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:51:59,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:59,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:51:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:59,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035547283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:51:59,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:51:59,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 6] total 11 [2023-11-29 00:51:59,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993536388] [2023-11-29 00:51:59,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:51:59,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:51:59,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:51:59,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:51:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:51:59,275 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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) [2023-11-29 00:51:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:51:59,490 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2023-11-29 00:51:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:51:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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 8 [2023-11-29 00:51:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:51:59,492 INFO L225 Difference]: With dead ends: 30 [2023-11-29 00:51:59,492 INFO L226 Difference]: Without dead ends: 19 [2023-11-29 00:51:59,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:51:59,495 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:51:59,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 16 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:51:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-29 00:51:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2023-11-29 00:51:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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) [2023-11-29 00:51:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-11-29 00:51:59,502 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2023-11-29 00:51:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:51:59,502 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-11-29 00:51:59,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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) [2023-11-29 00:51:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-11-29 00:51:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:51:59,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:51:59,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 00:51:59,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:51:59,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:51:59,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:51:59,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:59,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1956124455, now seen corresponding path program 1 times [2023-11-29 00:51:59,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:51:59,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951355482] [2023-11-29 00:51:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:51:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:59,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:51:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951355482] [2023-11-29 00:51:59,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951355482] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:51:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401073489] [2023-11-29 00:51:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:59,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:51:59,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:51:59,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:51:59,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:51:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:59,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:51:59,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:51:59,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:52:00,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401073489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:00,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:00,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-11-29 00:52:00,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578077544] [2023-11-29 00:52:00,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:00,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:52:00,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:52:00,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:52:00,055 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 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) [2023-11-29 00:52:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:52:00,363 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2023-11-29 00:52:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:52:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 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 14 [2023-11-29 00:52:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:52:00,364 INFO L225 Difference]: With dead ends: 55 [2023-11-29 00:52:00,364 INFO L226 Difference]: Without dead ends: 42 [2023-11-29 00:52:00,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:52:00,366 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:52:00,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 30 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:52:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-29 00:52:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-11-29 00:52:00,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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) [2023-11-29 00:52:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-11-29 00:52:00,377 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 14 [2023-11-29 00:52:00,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:52:00,378 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-11-29 00:52:00,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 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) [2023-11-29 00:52:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-29 00:52:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 00:52:00,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:52:00,379 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1] [2023-11-29 00:52:00,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:52:00,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:00,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:52:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash -178598021, now seen corresponding path program 2 times [2023-11-29 00:52:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599089105] [2023-11-29 00:52:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:52:00,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:00,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599089105] [2023-11-29 00:52:00,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599089105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:00,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772710121] [2023-11-29 00:52:00,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:52:00,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:00,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:00,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:00,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:52:00,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:52:00,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:52:00,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:52:00,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:52:00,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:52:00,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772710121] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:00,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:00,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-11-29 00:52:00,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087392346] [2023-11-29 00:52:00,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:00,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:52:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:52:00,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:52:00,978 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 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) [2023-11-29 00:52:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:52:01,510 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2023-11-29 00:52:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 00:52:01,510 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 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 20 [2023-11-29 00:52:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:52:01,512 INFO L225 Difference]: With dead ends: 110 [2023-11-29 00:52:01,512 INFO L226 Difference]: Without dead ends: 80 [2023-11-29 00:52:01,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 00:52:01,514 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:52:01,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 53 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:52:01,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-29 00:52:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 53. [2023-11-29 00:52:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 states have internal predecessors, (66), 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) [2023-11-29 00:52:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2023-11-29 00:52:01,529 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 20 [2023-11-29 00:52:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:52:01,530 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2023-11-29 00:52:01,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 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) [2023-11-29 00:52:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2023-11-29 00:52:01,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 00:52:01,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:52:01,531 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1] [2023-11-29 00:52:01,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:52:01,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:01,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:52:01,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1348938457, now seen corresponding path program 3 times [2023-11-29 00:52:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:01,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145778943] [2023-11-29 00:52:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 37 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 00:52:01,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:01,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145778943] [2023-11-29 00:52:01,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145778943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:01,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112199792] [2023-11-29 00:52:01,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:52:01,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:01,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:01,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:52:01,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-29 00:52:01,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:52:01,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:52:01,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:52:02,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:52:02,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112199792] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:02,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:02,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2023-11-29 00:52:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882069385] [2023-11-29 00:52:02,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:02,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:52:02,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:02,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:52:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:52:02,555 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 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) [2023-11-29 00:52:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:52:04,668 INFO L93 Difference]: Finished difference Result 117 states and 159 transitions. [2023-11-29 00:52:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:52:04,668 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 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 26 [2023-11-29 00:52:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:52:04,670 INFO L225 Difference]: With dead ends: 117 [2023-11-29 00:52:04,670 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 00:52:04,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=384, Invalid=672, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 00:52:04,672 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 45 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:52:04,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 10 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:52:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 00:52:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 51. [2023-11-29 00:52:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 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) [2023-11-29 00:52:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-11-29 00:52:04,687 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 26 [2023-11-29 00:52:04,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:52:04,687 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-11-29 00:52:04,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 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) [2023-11-29 00:52:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-11-29 00:52:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 00:52:04,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:52:04,689 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 1, 1, 1, 1, 1] [2023-11-29 00:52:04,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:52:04,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 00:52:04,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:52:04,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:04,890 INFO L85 PathProgramCache]: Analyzing trace with hash 253024153, now seen corresponding path program 4 times [2023-11-29 00:52:04,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:04,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784463944] [2023-11-29 00:52:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:04,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 173 proven. 57 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 00:52:05,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784463944] [2023-11-29 00:52:05,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784463944] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892671554] [2023-11-29 00:52:05,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:52:05,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:05,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:05,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:05,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:52:05,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:52:05,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:52:05,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 00:52:05,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:52:05,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:52:05,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892671554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:05,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:05,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 30 [2023-11-29 00:52:05,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706104000] [2023-11-29 00:52:05,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:05,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 00:52:05,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 00:52:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2023-11-29 00:52:05,752 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 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) [2023-11-29 00:52:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:52:22,652 INFO L93 Difference]: Finished difference Result 1186 states and 1365 transitions. [2023-11-29 00:52:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-11-29 00:52:22,653 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 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 50 [2023-11-29 00:52:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:52:22,659 INFO L225 Difference]: With dead ends: 1186 [2023-11-29 00:52:22,659 INFO L226 Difference]: Without dead ends: 1151 [2023-11-29 00:52:22,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6302 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=3213, Invalid=15419, Unknown=0, NotChecked=0, Total=18632 [2023-11-29 00:52:22,667 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:52:22,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 97 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 00:52:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2023-11-29 00:52:22,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 813. [2023-11-29 00:52:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 1.1834975369458127) internal successors, (961), 812 states have internal predecessors, (961), 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) [2023-11-29 00:52:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 961 transitions. [2023-11-29 00:52:22,814 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 961 transitions. Word has length 50 [2023-11-29 00:52:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:52:22,814 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 961 transitions. [2023-11-29 00:52:22,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 30 states have internal predecessors, (104), 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) [2023-11-29 00:52:22,814 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 961 transitions. [2023-11-29 00:52:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 00:52:22,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:52:22,820 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 10, 7, 1, 1, 1, 1, 1] [2023-11-29 00:52:22,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:52:23,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 00:52:23,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:52:23,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -424769477, now seen corresponding path program 5 times [2023-11-29 00:52:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039396377] [2023-11-29 00:52:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 222 proven. 77 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-29 00:52:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039396377] [2023-11-29 00:52:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039396377] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197199972] [2023-11-29 00:52:23,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:52:23,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:23,203 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:23,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:52:23,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-11-29 00:52:23,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:52:23,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 00:52:23,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 00:52:24,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 00:52:24,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197199972] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:24,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:24,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 33 [2023-11-29 00:52:24,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25274937] [2023-11-29 00:52:24,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:24,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 00:52:24,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:24,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 00:52:24,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:52:24,467 INFO L87 Difference]: Start difference. First operand 813 states and 961 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 33 states have internal predecessors, (115), 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) [2023-11-29 00:52:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:52:54,339 INFO L93 Difference]: Finished difference Result 3116 states and 3626 transitions. [2023-11-29 00:52:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-11-29 00:52:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 33 states have internal predecessors, (115), 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 [2023-11-29 00:52:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:52:54,349 INFO L225 Difference]: With dead ends: 3116 [2023-11-29 00:52:54,349 INFO L226 Difference]: Without dead ends: 2476 [2023-11-29 00:52:54,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10356 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=4812, Invalid=23918, Unknown=0, NotChecked=0, Total=28730 [2023-11-29 00:52:54,360 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:52:54,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 121 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 00:52:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2023-11-29 00:52:54,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 1127. [2023-11-29 00:52:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 1.1820603907637655) internal successors, (1331), 1126 states have internal predecessors, (1331), 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) [2023-11-29 00:52:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1331 transitions. [2023-11-29 00:52:54,597 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1331 transitions. Word has length 56 [2023-11-29 00:52:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:52:54,597 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1331 transitions. [2023-11-29 00:52:54,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 33 states have internal predecessors, (115), 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) [2023-11-29 00:52:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1331 transitions. [2023-11-29 00:52:54,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 00:52:54,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:52:54,600 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 9, 9, 1, 1, 1, 1, 1] [2023-11-29 00:52:54,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:52:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:54,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:52:54,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash 729171568, now seen corresponding path program 6 times [2023-11-29 00:52:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:54,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056679247] [2023-11-29 00:52:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 251 proven. 126 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 00:52:55,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:55,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056679247] [2023-11-29 00:52:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056679247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:55,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932825313] [2023-11-29 00:52:55,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:52:55,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:55,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:55,067 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:55,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:52:55,652 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2023-11-29 00:52:55,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:52:55,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 00:52:55,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 233 proven. 204 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 00:52:56,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 251 proven. 126 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 00:52:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932825313] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:58,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 14] total 42 [2023-11-29 00:52:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572481567] [2023-11-29 00:52:58,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:58,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 00:52:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 00:52:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=1216, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 00:52:58,965 INFO L87 Difference]: Start difference. First operand 1127 states and 1331 transitions. Second operand has 42 states, 42 states have (on average 2.619047619047619) internal successors, (110), 42 states have internal predecessors, (110), 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) [2023-11-29 00:53:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:53:56,288 INFO L93 Difference]: Finished difference Result 1518 states and 1821 transitions. [2023-11-29 00:53:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 00:53:56,289 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.619047619047619) internal successors, (110), 42 states have internal predecessors, (110), 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 [2023-11-29 00:53:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:53:56,291 INFO L225 Difference]: With dead ends: 1518 [2023-11-29 00:53:56,291 INFO L226 Difference]: Without dead ends: 427 [2023-11-29 00:53:56,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 57.7s TimeCoverageRelationStatistics Valid=1045, Invalid=1925, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 00:53:56,295 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 67 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:53:56,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 31 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 00:53:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-11-29 00:53:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 102. [2023-11-29 00:53:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 101 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) [2023-11-29 00:53:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2023-11-29 00:53:56,310 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 59 [2023-11-29 00:53:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:53:56,310 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2023-11-29 00:53:56,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.619047619047619) internal successors, (110), 42 states have internal predecessors, (110), 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) [2023-11-29 00:53:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2023-11-29 00:53:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 00:53:56,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:53:56,312 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 21, 11, 1, 1, 1, 1, 1] [2023-11-29 00:53:56,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:53:56,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:56,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:53:56,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash -554040688, now seen corresponding path program 7 times [2023-11-29 00:53:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:56,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325429078] [2023-11-29 00:53:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 723 proven. 187 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-29 00:53:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325429078] [2023-11-29 00:53:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325429078] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221782316] [2023-11-29 00:53:56,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:53:56,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:56,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:56,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:56,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:53:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:56,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 00:53:56,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 765 proven. 260 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-11-29 00:53:56,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 765 proven. 260 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-11-29 00:53:57,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221782316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:57,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:57,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 16] total 31 [2023-11-29 00:53:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922834492] [2023-11-29 00:53:57,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:57,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 00:53:57,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:57,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 00:53:57,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=693, Unknown=0, NotChecked=0, Total=992 [2023-11-29 00:53:57,741 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:55:17,461 INFO L93 Difference]: Finished difference Result 222 states and 263 transitions. [2023-11-29 00:55:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 00:55:17,462 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-11-29 00:55:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:55:17,462 INFO L225 Difference]: With dead ends: 222 [2023-11-29 00:55:17,463 INFO L226 Difference]: Without dead ends: 153 [2023-11-29 00:55:17,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 79.9s TimeCoverageRelationStatistics Valid=747, Invalid=1323, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 00:55:17,464 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 88 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:55:17,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 20 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:55:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-29 00:55:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-29 00:55:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.0855263157894737) internal successors, (165), 152 states have internal predecessors, (165), 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) [2023-11-29 00:55:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2023-11-29 00:55:17,510 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 101 [2023-11-29 00:55:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:55:17,511 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2023-11-29 00:55:17,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 31 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2023-11-29 00:55:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-29 00:55:17,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:55:17,513 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 28, 21, 1, 1, 1, 1, 1] [2023-11-29 00:55:17,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:55:17,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:55:17,716 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:55:17,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash 349888185, now seen corresponding path program 8 times [2023-11-29 00:55:17,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:17,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325730574] [2023-11-29 00:55:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:17,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 1777 proven. 1190 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-29 00:55:18,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325730574] [2023-11-29 00:55:18,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325730574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:55:18,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676687200] [2023-11-29 00:55:18,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:55:18,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:55:18,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:55:18,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:55:18,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c1aae3-25f9-4a0a-8b2e-4a16f3b7e9f4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:55:18,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:55:18,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:55:18,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 106 conjunts are in the unsatisfiable core [2023-11-29 00:55:18,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:55:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 0 proven. 3515 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-29 00:55:19,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:55:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 0 proven. 3515 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-29 00:55:21,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676687200] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:55:21,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:55:21,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 31] total 90 [2023-11-29 00:55:21,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603347808] [2023-11-29 00:55:21,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:55:21,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-11-29 00:55:21,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:21,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-11-29 00:55:21,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=7163, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 00:55:21,802 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand has 91 states, 91 states have (on average 3.4505494505494507) internal successors, (314), 90 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:28,331 WARN L854 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967279) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967290) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967287) 4294967296) 0)) (not (= 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296))) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967280) 4294967296) 0)) (<= 0 (div |c_ULTIMATE.start_main_~x~0#1| 4294967296)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967294) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967284) 4294967296) 0)) (<= |c_ULTIMATE.start_main_~x~0#1| 28) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967288) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967283) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~y~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967292) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967291) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967276) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967275) 4294967296) 0))) is different from false [2023-11-29 00:55:32,343 WARN L854 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967279) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967290) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967287) 4294967296) 0)) (not (= 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296))) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967294) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967288) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967283) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~y~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967292) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967291) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967276) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967275) 4294967296) 0))) is different from false [2023-11-29 00:58:17,047 WARN L293 SmtUtils]: Spent 47.35s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:58:21,055 WARN L854 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967279) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967290) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967287) 4294967296) 0)) (not (= 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296))) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967294) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967288) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967283) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~y~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967292) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967291) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967276) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967275) 4294967296) 0))) is different from false [2023-11-29 00:58:25,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:58:26,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:58:31,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:58:33,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:58:35,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:58:38,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:58:39,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:58:42,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:58:46,284 WARN L854 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967279) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967290) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967286) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967285) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967294) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967288) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967283) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~y~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967292) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967291) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967293) 4294967296) 0))) is different from false [2023-11-29 01:03:17,147 WARN L293 SmtUtils]: Spent 1.52m on a formula simplification that was a NOOP. DAG size: 132 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:03:21,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:05:14,793 WARN L293 SmtUtils]: Spent 29.35s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:05:18,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:05:21,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:05:25,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:05:28,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:05:32,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:05:36,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:05:40,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:05:43,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:05:47,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []