./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/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_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/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_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/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 ad40c7e9e7b0c80b1cec1e361a82d834fdd8270143479aa0f4bf8bc2b59c2aa5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:27:42,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:27:43,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:27:43,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:27:43,061 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:27:43,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:27:43,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:27:43,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:27:43,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:27:43,090 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:27:43,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:27:43,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:27:43,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:27:43,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:27:43,093 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:27:43,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:27:43,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:27:43,095 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:27:43,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:27:43,096 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:27:43,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:27:43,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:27:43,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:27:43,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:27:43,098 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:27:43,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:27:43,099 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:27:43,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:27:43,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:27:43,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:27:43,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:27:43,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:27:43,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:27:43,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:27:43,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:27:43,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:27:43,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:27:43,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:27:43,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:27:43,103 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:27:43,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:27:43,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:27:43,104 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_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad40c7e9e7b0c80b1cec1e361a82d834fdd8270143479aa0f4bf8bc2b59c2aa5 [2023-11-29 01:27:43,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:27:43,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:27:43,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:27:43,375 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:27:43,375 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:27:43,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2023-11-29 01:27:46,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:27:46,416 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:27:46,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2023-11-29 01:27:46,423 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/data/206b9d62c/b11bb0f0c2b04008bd7e1efb3d2a5fa4/FLAGc37857c25 [2023-11-29 01:27:46,438 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/data/206b9d62c/b11bb0f0c2b04008bd7e1efb3d2a5fa4 [2023-11-29 01:27:46,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:27:46,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:27:46,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:27:46,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:27:46,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:27:46,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6083a93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46, skipping insertion in model container [2023-11-29 01:27:46,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:27:46,613 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_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c[588,601] [2023-11-29 01:27:46,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:27:46,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:27:46,653 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_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c[588,601] [2023-11-29 01:27:46,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:27:46,681 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:27:46,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46 WrapperNode [2023-11-29 01:27:46,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:27:46,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:27:46,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:27:46,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:27:46,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,719 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-29 01:27:46,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:27:46,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:27:46,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:27:46,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:27:46,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,733 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,747 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 01:27:46,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,757 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:27:46,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:27:46,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:27:46,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:27:46,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (1/1) ... [2023-11-29 01:27:46,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:27:46,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:46,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:27:46,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:27:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:27:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:27:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:27:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:27:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:27:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:27:46,882 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:27:46,884 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:27:47,018 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:27:47,041 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:27:47,041 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:27:47,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:27:47 BoogieIcfgContainer [2023-11-29 01:27:47,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:27:47,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:27:47,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:27:47,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:27:47,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:27:46" (1/3) ... [2023-11-29 01:27:47,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375ed20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:27:47, skipping insertion in model container [2023-11-29 01:27:47,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:46" (2/3) ... [2023-11-29 01:27:47,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375ed20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:27:47, skipping insertion in model container [2023-11-29 01:27:47,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:27:47" (3/3) ... [2023-11-29 01:27:47,053 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound5.c [2023-11-29 01:27:47,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:27:47,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:27:47,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:27:47,122 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;@11b789c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:27:47,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:27:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 01:27:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 01:27:47,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:47,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:47,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:47,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:47,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2080946738, now seen corresponding path program 1 times [2023-11-29 01:27:47,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:47,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535580713] [2023-11-29 01:27:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:47,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:47,312 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 01:27:47,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535580713] [2023-11-29 01:27:47,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535580713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:47,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:27:47,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:27:47,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656910282] [2023-11-29 01:27:47,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:47,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:27:47,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:27:47,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:27:47,355 INFO L87 Difference]: Start difference. First operand has 24 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:47,390 INFO L93 Difference]: Finished difference Result 46 states and 84 transitions. [2023-11-29 01:27:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:27:47,392 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 01:27:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:47,401 INFO L225 Difference]: With dead ends: 46 [2023-11-29 01:27:47,401 INFO L226 Difference]: Without dead ends: 22 [2023-11-29 01:27:47,405 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 01:27:47,409 INFO L413 NwaCegarLoop]: 32 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, 32 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 01:27:47,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:27:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-29 01:27:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-29 01:27:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:27:47,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2023-11-29 01:27:47,479 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 8 [2023-11-29 01:27:47,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:47,480 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2023-11-29 01:27:47,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:47,481 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2023-11-29 01:27:47,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 01:27:47,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:47,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:47,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:27:47,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:47,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:47,484 INFO L85 PathProgramCache]: Analyzing trace with hash -304390244, now seen corresponding path program 1 times [2023-11-29 01:27:47,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:47,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36885726] [2023-11-29 01:27:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:47,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:47,713 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 01:27:47,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:47,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36885726] [2023-11-29 01:27:47,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36885726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:47,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:27:47,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:27:47,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871942097] [2023-11-29 01:27:47,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:47,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:27:47,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:47,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:27:47,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:27:47,718 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:47,808 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2023-11-29 01:27:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:27:47,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 01:27:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:47,810 INFO L225 Difference]: With dead ends: 28 [2023-11-29 01:27:47,810 INFO L226 Difference]: Without dead ends: 26 [2023-11-29 01:27:47,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:27:47,812 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:47,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 78 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:27:47,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-29 01:27:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-29 01:27:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:27:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-11-29 01:27:47,830 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 8 [2023-11-29 01:27:47,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:47,831 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-11-29 01:27:47,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:27:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-11-29 01:27:47,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 01:27:47,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:47,833 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:47,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:27:47,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:47,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1112146385, now seen corresponding path program 1 times [2023-11-29 01:27:47,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:47,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578462269] [2023-11-29 01:27:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:47,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:47,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003061336] [2023-11-29 01:27:47,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:47,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:47,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:47,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:47,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:27:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:47,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:27:47,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:48,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:27:48,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:48,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578462269] [2023-11-29 01:27:48,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:48,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003061336] [2023-11-29 01:27:48,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003061336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:27:48,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:27:48,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-29 01:27:48,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530690460] [2023-11-29 01:27:48,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:48,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:27:48,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:27:48,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:27:48,192 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:27:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:48,571 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2023-11-29 01:27:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:27:48,573 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-11-29 01:27:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:48,576 INFO L225 Difference]: With dead ends: 51 [2023-11-29 01:27:48,576 INFO L226 Difference]: Without dead ends: 49 [2023-11-29 01:27:48,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:27:48,578 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:48,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 100 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:27:48,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-29 01:27:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2023-11-29 01:27:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 01:27:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2023-11-29 01:27:48,603 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 13 [2023-11-29 01:27:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:48,603 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2023-11-29 01:27:48,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:27:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2023-11-29 01:27:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 01:27:48,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:48,605 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:48,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:27:48,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:48,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:48,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:48,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1589877564, now seen corresponding path program 1 times [2023-11-29 01:27:48,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:48,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121122781] [2023-11-29 01:27:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:48,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:48,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:48,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904109862] [2023-11-29 01:27:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:48,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:48,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:48,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:48,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:27:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:48,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:27:48,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:27:48,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:27:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:49,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121122781] [2023-11-29 01:27:49,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:49,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904109862] [2023-11-29 01:27:49,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904109862] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:27:49,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:27:49,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-29 01:27:49,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24474318] [2023-11-29 01:27:49,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:49,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:27:49,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:49,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:27:49,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:27:49,086 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:27:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:49,315 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2023-11-29 01:27:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:27:49,316 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2023-11-29 01:27:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:49,318 INFO L225 Difference]: With dead ends: 53 [2023-11-29 01:27:49,318 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 01:27:49,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:27:49,320 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:49,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 70 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:27:49,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 01:27:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-29 01:27:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 01:27:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions. [2023-11-29 01:27:49,339 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 18 [2023-11-29 01:27:49,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:49,340 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions. [2023-11-29 01:27:49,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:27:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions. [2023-11-29 01:27:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:27:49,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:49,341 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:49,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:27:49,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:49,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:49,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1560032783, now seen corresponding path program 1 times [2023-11-29 01:27:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32750570] [2023-11-29 01:27:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:49,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439373803] [2023-11-29 01:27:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:49,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:49,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:49,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:49,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:27:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:49,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:27:49,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:27:49,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:27:50,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:50,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32750570] [2023-11-29 01:27:50,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:50,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439373803] [2023-11-29 01:27:50,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439373803] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:27:50,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:27:50,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-29 01:27:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167592024] [2023-11-29 01:27:50,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:50,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:27:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:27:50,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:27:50,476 INFO L87 Difference]: Start difference. First operand 50 states and 67 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 01:27:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:51,079 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2023-11-29 01:27:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:27:51,080 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2023-11-29 01:27:51,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:51,081 INFO L225 Difference]: With dead ends: 66 [2023-11-29 01:27:51,081 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 01:27:51,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:27:51,083 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:51,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 95 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:27:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 01:27:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-29 01:27:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 32 states have internal predecessors, (32), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 01:27:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-11-29 01:27:51,110 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 23 [2023-11-29 01:27:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:51,111 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-11-29 01:27:51,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 01:27:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-11-29 01:27:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 01:27:51,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:51,113 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:51,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 01:27:51,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:51,314 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:51,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1335110159, now seen corresponding path program 1 times [2023-11-29 01:27:51,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:51,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414935023] [2023-11-29 01:27:51,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:51,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:51,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:51,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480827274] [2023-11-29 01:27:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:51,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:51,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:51,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:51,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:27:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:51,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:27:51,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 01:27:51,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 01:27:51,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414935023] [2023-11-29 01:27:51,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480827274] [2023-11-29 01:27:51,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480827274] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:27:51,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:27:51,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-11-29 01:27:51,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635512701] [2023-11-29 01:27:51,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:51,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:27:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:51,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:27:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:27:51,687 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 01:27:57,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:27:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:57,320 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2023-11-29 01:27:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:27:57,321 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 45 [2023-11-29 01:27:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:57,323 INFO L225 Difference]: With dead ends: 81 [2023-11-29 01:27:57,323 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 01:27:57,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:27:57,324 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:57,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 130 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 162 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-11-29 01:27:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 01:27:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2023-11-29 01:27:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 44 states have internal predecessors, (44), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 01:27:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2023-11-29 01:27:57,348 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 45 [2023-11-29 01:27:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:57,348 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2023-11-29 01:27:57,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 01:27:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2023-11-29 01:27:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:27:57,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:57,351 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:57,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:27:57,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:27:57,552 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:57,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:57,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1958076911, now seen corresponding path program 2 times [2023-11-29 01:27:57,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:57,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382895940] [2023-11-29 01:27:57,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:57,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:57,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:57,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425860972] [2023-11-29 01:27:57,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:27:57,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:57,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:57,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:57,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:27:57,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:27:57,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:27:57,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:27:57,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-29 01:27:57,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 01:27:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:58,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382895940] [2023-11-29 01:27:58,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:58,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425860972] [2023-11-29 01:27:58,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425860972] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:27:58,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:27:58,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-29 01:27:58,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735286372] [2023-11-29 01:27:58,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:58,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:27:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:27:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:27:58,195 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 01:27:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:58,507 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2023-11-29 01:27:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:27:58,508 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 55 [2023-11-29 01:27:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:58,510 INFO L225 Difference]: With dead ends: 85 [2023-11-29 01:27:58,510 INFO L226 Difference]: Without dead ends: 80 [2023-11-29 01:27:58,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:27:58,511 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:58,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 96 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:27:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-29 01:27:58,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-29 01:27:58,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 47 states have internal predecessors, (47), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 01:27:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2023-11-29 01:27:58,533 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 55 [2023-11-29 01:27:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:58,534 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2023-11-29 01:27:58,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 01:27:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2023-11-29 01:27:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:27:58,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:58,537 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:58,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:27:58,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 01:27:58,742 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:58,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash 811423347, now seen corresponding path program 1 times [2023-11-29 01:27:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288739347] [2023-11-29 01:27:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:58,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:58,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:58,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846076591] [2023-11-29 01:27:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:58,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:58,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:58,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:58,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:27:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:58,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:27:58,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-29 01:27:59,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-29 01:27:59,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:59,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288739347] [2023-11-29 01:27:59,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:59,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846076591] [2023-11-29 01:27:59,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846076591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:27:59,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:27:59,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-11-29 01:27:59,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19049854] [2023-11-29 01:27:59,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:59,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:27:59,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:27:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:27:59,345 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-29 01:27:59,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:59,764 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2023-11-29 01:27:59,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:27:59,765 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 66 [2023-11-29 01:27:59,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:59,766 INFO L225 Difference]: With dead ends: 94 [2023-11-29 01:27:59,767 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 01:27:59,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:27:59,769 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:59,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 156 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:27:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 01:27:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2023-11-29 01:27:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 51 states have internal predecessors, (52), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 01:27:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2023-11-29 01:27:59,809 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 66 [2023-11-29 01:27:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:59,810 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2023-11-29 01:27:59,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-29 01:27:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2023-11-29 01:27:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 01:27:59,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:59,812 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:59,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:28:00,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:00,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:00,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:00,017 INFO L85 PathProgramCache]: Analyzing trace with hash 462308408, now seen corresponding path program 1 times [2023-11-29 01:28:00,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:00,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241562720] [2023-11-29 01:28:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:00,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:00,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415859538] [2023-11-29 01:28:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:00,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:00,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:00,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:00,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:28:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:00,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:28:00,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 01:28:00,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 01:28:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241562720] [2023-11-29 01:28:00,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415859538] [2023-11-29 01:28:00,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415859538] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:00,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-11-29 01:28:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369489151] [2023-11-29 01:28:00,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:00,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:28:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:00,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:28:00,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:28:00,646 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-29 01:28:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:01,149 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2023-11-29 01:28:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:28:01,150 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 71 [2023-11-29 01:28:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:01,151 INFO L225 Difference]: With dead ends: 123 [2023-11-29 01:28:01,151 INFO L226 Difference]: Without dead ends: 114 [2023-11-29 01:28:01,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:28:01,152 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:01,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 201 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:28:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-29 01:28:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2023-11-29 01:28:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 62 states have (on average 1.064516129032258) internal successors, (66), 65 states have internal predecessors, (66), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 01:28:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2023-11-29 01:28:01,196 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 71 [2023-11-29 01:28:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:01,196 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2023-11-29 01:28:01,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-29 01:28:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2023-11-29 01:28:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:28:01,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:01,198 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 01:28:01,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:28:01,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:01,399 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:01,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash 978023919, now seen corresponding path program 3 times [2023-11-29 01:28:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970739144] [2023-11-29 01:28:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:01,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:01,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265935177] [2023-11-29 01:28:01,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:28:01,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:01,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:01,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:01,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:28:01,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:28:01,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:01,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 01:28:01,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-29 01:28:01,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-29 01:28:02,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:02,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970739144] [2023-11-29 01:28:02,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:02,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265935177] [2023-11-29 01:28:02,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265935177] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:02,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:02,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-11-29 01:28:02,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406020689] [2023-11-29 01:28:02,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:02,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:28:02,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:02,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:28:02,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:28:02,965 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-29 01:28:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:05,302 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2023-11-29 01:28:05,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:28:05,303 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 77 [2023-11-29 01:28:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:05,304 INFO L225 Difference]: With dead ends: 133 [2023-11-29 01:28:05,304 INFO L226 Difference]: Without dead ends: 123 [2023-11-29 01:28:05,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:28:05,305 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:05,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 189 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:28:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-29 01:28:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-29 01:28:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 73 states have internal predecessors, (74), 32 states have call successors, (32), 19 states have call predecessors, (32), 19 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-29 01:28:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2023-11-29 01:28:05,336 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 77 [2023-11-29 01:28:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:05,336 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2023-11-29 01:28:05,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-29 01:28:05,336 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2023-11-29 01:28:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 01:28:05,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:05,338 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:05,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:28:05,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:28:05,539 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:05,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:05,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1954081427, now seen corresponding path program 2 times [2023-11-29 01:28:05,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:05,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571332173] [2023-11-29 01:28:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:05,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:05,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:05,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999904052] [2023-11-29 01:28:05,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:28:05,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:05,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:05,550 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:05,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:28:05,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:28:05,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:05,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 01:28:05,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 101 proven. 43 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-11-29 01:28:05,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2023-11-29 01:28:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571332173] [2023-11-29 01:28:07,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999904052] [2023-11-29 01:28:07,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999904052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:07,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:07,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2023-11-29 01:28:07,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685698199] [2023-11-29 01:28:07,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:07,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:28:07,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:28:07,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:28:07,735 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand has 17 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-29 01:28:08,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:08,808 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2023-11-29 01:28:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:28:08,808 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 120 [2023-11-29 01:28:08,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:08,810 INFO L225 Difference]: With dead ends: 142 [2023-11-29 01:28:08,810 INFO L226 Difference]: Without dead ends: 140 [2023-11-29 01:28:08,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:28:08,812 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 13 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:08,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 209 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:28:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-29 01:28:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2023-11-29 01:28:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 83 states have (on average 1.036144578313253) internal successors, (86), 85 states have internal predecessors, (86), 32 states have call successors, (32), 23 states have call predecessors, (32), 23 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-29 01:28:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2023-11-29 01:28:08,853 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 120 [2023-11-29 01:28:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:08,853 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2023-11-29 01:28:08,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-29 01:28:08,854 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2023-11-29 01:28:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 01:28:08,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:08,855 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:08,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:28:09,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:09,056 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:09,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1568288115, now seen corresponding path program 1 times [2023-11-29 01:28:09,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:09,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58158184] [2023-11-29 01:28:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:09,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:09,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:09,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026287765] [2023-11-29 01:28:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:09,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:09,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:09,069 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:09,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:28:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:09,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 01:28:09,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 95 proven. 119 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-11-29 01:28:09,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:20,031 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) (.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~z~0#1|))) (or (= (+ (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 2) (* 2 .cse0) (* 5 .cse1) 38) (+ (* |c_ULTIMATE.start_main_~y~0#1| 94) (* (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) 3) (* 23 |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| 54))) (not (= (+ 18 (* .cse1 2) .cse0) (+ (* |c_ULTIMATE.start_main_~y~0#1| 36) (* |c_ULTIMATE.start_main_~x~0#1| 18) (* |c_ULTIMATE.start_main_~z~0#1| 10)))))) is different from true [2023-11-29 01:28:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 97 proven. 96 refuted. 0 times theorem prover too weak. 886 trivial. 21 not checked. [2023-11-29 01:28:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58158184] [2023-11-29 01:28:21,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026287765] [2023-11-29 01:28:21,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026287765] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:21,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-29 01:28:21,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298727895] [2023-11-29 01:28:21,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:21,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:28:21,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:28:21,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=239, Unknown=1, NotChecked=32, Total=342 [2023-11-29 01:28:21,578 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 9 states have call predecessors, (46), 11 states have call successors, (46) [2023-11-29 01:28:25,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:28:32,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:28:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:35,210 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2023-11-29 01:28:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:28:35,211 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 9 states have call predecessors, (46), 11 states have call successors, (46) Word has length 130 [2023-11-29 01:28:35,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:35,213 INFO L225 Difference]: With dead ends: 159 [2023-11-29 01:28:35,213 INFO L226 Difference]: Without dead ends: 142 [2023-11-29 01:28:35,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 241 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=132, Invalid=423, Unknown=1, NotChecked=44, Total=600 [2023-11-29 01:28:35,214 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:35,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 218 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 331 Invalid, 1 Unknown, 62 Unchecked, 6.4s Time] [2023-11-29 01:28:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-29 01:28:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2023-11-29 01:28:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 28 states have call successors, (28), 24 states have call predecessors, (28), 23 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 01:28:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2023-11-29 01:28:35,248 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 130 [2023-11-29 01:28:35,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:35,248 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2023-11-29 01:28:35,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 9 states have call predecessors, (46), 11 states have call successors, (46) [2023-11-29 01:28:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2023-11-29 01:28:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-29 01:28:35,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:35,250 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:35,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:28:35,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:28:35,451 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:35,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1567024997, now seen corresponding path program 2 times [2023-11-29 01:28:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:35,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244258776] [2023-11-29 01:28:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:35,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:35,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:35,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576069496] [2023-11-29 01:28:35,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:28:35,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:35,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:35,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:35,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:28:35,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:28:35,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:35,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 01:28:35,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 128 proven. 74 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-11-29 01:28:35,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 128 proven. 32 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2023-11-29 01:28:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244258776] [2023-11-29 01:28:36,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576069496] [2023-11-29 01:28:36,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576069496] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:36,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2023-11-29 01:28:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784553026] [2023-11-29 01:28:36,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:36,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:28:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:36,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:28:36,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:28:36,559 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 19 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 11 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 11 states have call successors, (39) [2023-11-29 01:28:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:37,170 INFO L93 Difference]: Finished difference Result 163 states and 171 transitions. [2023-11-29 01:28:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:28:37,170 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 11 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 11 states have call successors, (39) Word has length 152 [2023-11-29 01:28:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:37,171 INFO L225 Difference]: With dead ends: 163 [2023-11-29 01:28:37,171 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 01:28:37,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 283 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:28:37,173 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:37,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 357 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:28:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 01:28:37,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 01:28:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 01:28:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 01:28:37,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2023-11-29 01:28:37,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:37,174 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 01:28:37,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 11 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 11 states have call successors, (39) [2023-11-29 01:28:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 01:28:37,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 01:28:37,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 01:28:37,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:37,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:28:37,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 01:29:22,687 WARN L293 SmtUtils]: Spent 43.21s on a formula simplification. DAG size of input: 181 DAG size of output: 48 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 01:29:32,818 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 151 DAG size of output: 43 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 01:29:44,515 WARN L293 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 134 DAG size of output: 46 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 01:29:53,205 WARN L293 SmtUtils]: Spent 8.62s on a formula simplification. DAG size of input: 134 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 01:30:24,734 WARN L293 SmtUtils]: Spent 31.53s on a formula simplification. DAG size of input: 134 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 01:30:39,098 WARN L293 SmtUtils]: Spent 14.36s on a formula simplification. DAG size of input: 181 DAG size of output: 48 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 01:30:39,101 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 01:30:39,101 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1))) (<= 0 |ULTIMATE.start_main_~a~0#1|))) [2023-11-29 01:30:39,102 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-11-29 01:30:39,102 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) (* |ULTIMATE.start_main_~x~0#1| 18))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2023-11-29 01:30:39,102 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse2 (<= |ULTIMATE.start_main_~a~0#1| 5)) (.cse3 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) .cse2 (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) .cse3 (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and (= 2 |ULTIMATE.start_main_~n~0#1|) .cse2 (= |ULTIMATE.start_main_~x~0#1| 8) .cse3 (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 1)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2023-11-29 01:30:39,103 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-11-29 01:30:39,103 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-11-29 01:30:39,103 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 01:30:39,103 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2023-11-29 01:30:39,103 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-29 01:30:39,104 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1))) (<= 0 |ULTIMATE.start_main_~a~0#1|))) [2023-11-29 01:30:39,104 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1))) (<= 0 |ULTIMATE.start_main_~a~0#1|))) [2023-11-29 01:30:39,104 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-11-29 01:30:39,104 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-29 01:30:39,104 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-11-29 01:30:39,104 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-29 01:30:39,104 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1))) (<= 0 |ULTIMATE.start_main_~a~0#1|))) [2023-11-29 01:30:39,105 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-29 01:30:39,105 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-11-29 01:30:39,105 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-11-29 01:30:39,105 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-11-29 01:30:39,105 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-11-29 01:30:39,105 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-11-29 01:30:39,105 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-11-29 01:30:39,108 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:30:39,109 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:30:39,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:30:39 BoogieIcfgContainer [2023-11-29 01:30:39,120 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:30:39,120 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:30:39,120 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:30:39,120 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:30:39,121 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:27:47" (3/4) ... [2023-11-29 01:30:39,123 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:30:39,126 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 01:30:39,130 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-29 01:30:39,130 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 01:30:39,130 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 01:30:39,130 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 01:30:39,215 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:30:39,216 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:30:39,216 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:30:39,217 INFO L158 Benchmark]: Toolchain (without parser) took 172775.27ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 100.2MB in the beginning and 60.6MB in the end (delta: 39.7MB). Peak memory consumption was 74.2MB. Max. memory is 16.1GB. [2023-11-29 01:30:39,217 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:30:39,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.57ms. Allocated memory is still 138.4MB. Free memory was 99.8MB in the beginning and 88.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 01:30:39,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.89ms. Allocated memory is still 138.4MB. Free memory was 88.9MB in the beginning and 87.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:30:39,219 INFO L158 Benchmark]: Boogie Preprocessor took 38.95ms. Allocated memory is still 138.4MB. Free memory was 87.2MB in the beginning and 85.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:30:39,219 INFO L158 Benchmark]: RCFGBuilder took 281.87ms. Allocated memory is still 138.4MB. Free memory was 85.7MB in the beginning and 73.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 01:30:39,220 INFO L158 Benchmark]: TraceAbstraction took 172074.42ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 73.1MB in the beginning and 65.8MB in the end (delta: 7.3MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2023-11-29 01:30:39,220 INFO L158 Benchmark]: Witness Printer took 96.20ms. Allocated memory is still 172.0MB. Free memory was 65.8MB in the beginning and 60.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:30:39,222 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.57ms. Allocated memory is still 138.4MB. Free memory was 99.8MB in the beginning and 88.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.89ms. Allocated memory is still 138.4MB. Free memory was 88.9MB in the beginning and 87.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.95ms. Allocated memory is still 138.4MB. Free memory was 87.2MB in the beginning and 85.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 281.87ms. Allocated memory is still 138.4MB. Free memory was 85.7MB in the beginning and 73.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 172074.42ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 73.1MB in the beginning and 65.8MB in the end (delta: 7.3MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * Witness Printer took 96.20ms. Allocated memory is still 172.0MB. Free memory was 65.8MB in the beginning and 60.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 172.0s, OverallIterations: 13, TraceHistogramMax: 28, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 121.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 311 SdHoareTripleChecker+Valid, 16.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 1931 SdHoareTripleChecker+Invalid, 15.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 62 IncrementalHoareTripleChecker+Unchecked, 1606 mSDsCounter, 384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2455 IncrementalHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 384 mSolverCounterUnsat, 325 mSDtfsCounter, 2455 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1578 GetRequests, 1381 SyntacticMatches, 5 SemanticMatches, 192 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=11, InterpolantAutomatonStates: 136, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 14 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 81 PreInvPairs, 145 NumberOfFragments, 867 HoareAnnotationTreeSize, 81 FomulaSimplifications, 11882 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 13 FomulaSimplificationsInter, 3604 FormulaSimplificationTreeSizeReductionInter, 121.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 20.6s InterpolantComputationTime, 786 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1532 ConstructedInterpolants, 0 QuantifiedInterpolants, 8182 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1760 ConjunctsInSsa, 321 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 8910/9498 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((((y * z) + (2 * z)) == ((6 + (y * 12)) + (x * 18))) && (a <= 5)) && ((((y * z) + 6) + (z * z)) == (((z * 4) + (x * 18)) + (y * 24)))) && (z == (6 + (6 * n)))) && ((n < (a + 1)) || ((((2 * y) + (6 * a)) + 10) == ((a * z) + (2 * z))))) && (0 <= a)) RESULT: Ultimate proved your program to be correct! [2023-11-29 01:30:39,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c32bc0f9-8a29-4e31-b6f2-4da9e9a69eed/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE