./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/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_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/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_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/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 bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:36:20,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:36:20,744 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:36:20,748 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:36:20,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:36:20,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:36:20,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:36:20,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:36:20,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:36:20,774 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:36:20,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:36:20,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:36:20,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:36:20,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:36:20,777 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:36:20,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:36:20,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:36:20,778 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:36:20,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:36:20,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:36:20,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:36:20,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:36:20,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:36:20,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:36:20,781 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:36:20,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:36:20,782 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:36:20,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:36:20,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:36:20,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:36:20,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:36:20,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:36:20,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:36:20,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:36:20,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:36:20,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:36:20,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:36:20,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:36:20,787 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:36:20,787 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:36:20,787 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:36:20,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:36:20,787 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_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2023-11-28 23:36:21,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:36:21,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:36:21,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:36:21,044 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:36:21,045 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:36:21,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-11-28 23:36:23,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:36:23,958 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:36:23,959 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-11-28 23:36:23,966 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/data/7369f7b8c/b472db3371df4fba9761bcc1b3ea6415/FLAG94e0a7998 [2023-11-28 23:36:23,978 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/data/7369f7b8c/b472db3371df4fba9761bcc1b3ea6415 [2023-11-28 23:36:23,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:36:23,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:36:23,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:36:23,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:36:23,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:36:23,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:36:23" (1/1) ... [2023-11-28 23:36:23,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa6d0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:23, skipping insertion in model container [2023-11-28 23:36:23,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:36:23" (1/1) ... [2023-11-28 23:36:24,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:36:24,177 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_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2023-11-28 23:36:24,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:36:24,204 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:36:24,214 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_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2023-11-28 23:36:24,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:36:24,236 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:36:24,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24 WrapperNode [2023-11-28 23:36:24,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:36:24,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:36:24,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:36:24,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:36:24,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,265 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2023-11-28 23:36:24,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:36:24,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:36:24,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:36:24,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:36:24,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,277 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,290 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]. [2023-11-28 23:36:24,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:36:24,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:36:24,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:36:24,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:36:24,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (1/1) ... [2023-11-28 23:36:24,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:36:24,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:24,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:36:24,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:36:24,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:36:24,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-28 23:36:24,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-28 23:36:24,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:36:24,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:36:24,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:36:24,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-28 23:36:24,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-28 23:36:24,425 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:36:24,427 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:36:24,572 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:36:24,594 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:36:24,594 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-28 23:36:24,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:36:24 BoogieIcfgContainer [2023-11-28 23:36:24,595 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:36:24,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:36:24,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:36:24,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:36:24,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:36:23" (1/3) ... [2023-11-28 23:36:24,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5229685b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:36:24, skipping insertion in model container [2023-11-28 23:36:24,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:36:24" (2/3) ... [2023-11-28 23:36:24,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5229685b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:36:24, skipping insertion in model container [2023-11-28 23:36:24,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:36:24" (3/3) ... [2023-11-28 23:36:24,603 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2023-11-28 23:36:24,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:36:24,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:36:24,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:36:24,663 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;@535edb8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:36:24,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 23:36:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-28 23:36:24,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-28 23:36:24,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:24,673 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:24,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:24,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash 67099435, now seen corresponding path program 1 times [2023-11-28 23:36:24,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:24,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186868439] [2023-11-28 23:36:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:24,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:24,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:24,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186868439] [2023-11-28 23:36:24,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 23:36:24,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921298701] [2023-11-28 23:36:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:24,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:24,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:24,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:24,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:36:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:24,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 23:36:24,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:36:24,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:36:24,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921298701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:36:24,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:36:24,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:36:24,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826402032] [2023-11-28 23:36:24,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:36:24,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:36:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:36:24,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:36:24,936 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:36:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:24,963 INFO L93 Difference]: Finished difference Result 62 states and 104 transitions. [2023-11-28 23:36:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:36:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-11-28 23:36:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:24,971 INFO L225 Difference]: With dead ends: 62 [2023-11-28 23:36:24,971 INFO L226 Difference]: Without dead ends: 30 [2023-11-28 23:36:24,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:36:24,978 INFO L413 NwaCegarLoop]: 39 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, 39 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 [2023-11-28 23:36:24,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:36:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-28 23:36:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-28 23:36:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:36:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2023-11-28 23:36:25,015 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 28 [2023-11-28 23:36:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:25,016 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2023-11-28 23:36:25,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:36:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-11-28 23:36:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-28 23:36:25,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:25,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:25,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:36:25,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 23:36:25,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:25,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:25,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1772608446, now seen corresponding path program 1 times [2023-11-28 23:36:25,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:25,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827876669] [2023-11-28 23:36:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:25,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:25,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:25,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988476715] [2023-11-28 23:36:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:25,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:25,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:25,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:25,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:36:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:25,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:36:25,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:36:25,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:36:25,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:25,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827876669] [2023-11-28 23:36:25,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988476715] [2023-11-28 23:36:25,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988476715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:36:25,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:36:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:36:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707339396] [2023-11-28 23:36:25,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:36:25,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:36:25,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:25,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:36:25,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:36:25,406 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 23:36:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:25,524 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2023-11-28 23:36:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:36:25,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-11-28 23:36:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:25,527 INFO L225 Difference]: With dead ends: 49 [2023-11-28 23:36:25,527 INFO L226 Difference]: Without dead ends: 42 [2023-11-28 23:36:25,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:36:25,529 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:25,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 115 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:36:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-28 23:36:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2023-11-28 23:36:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:36:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-11-28 23:36:25,541 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 29 [2023-11-28 23:36:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:25,541 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-11-28 23:36:25,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 23:36:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-11-28 23:36:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-28 23:36:25,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:25,543 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:25,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:36:25,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-28 23:36:25,744 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:25,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1072684582, now seen corresponding path program 1 times [2023-11-28 23:36:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:25,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301796262] [2023-11-28 23:36:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:25,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:25,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:25,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437646425] [2023-11-28 23:36:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:25,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:25,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:25,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:25,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:36:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:25,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-28 23:36:25,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:36:26,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:36:26,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:26,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301796262] [2023-11-28 23:36:26,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:26,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437646425] [2023-11-28 23:36:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437646425] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:26,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:36:26,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-28 23:36:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041568055] [2023-11-28 23:36:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:36:26,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:36:26,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:36:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:36:26,349 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 23:36:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:26,442 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2023-11-28 23:36:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:36:26,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2023-11-28 23:36:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:26,444 INFO L225 Difference]: With dead ends: 48 [2023-11-28 23:36:26,445 INFO L226 Difference]: Without dead ends: 46 [2023-11-28 23:36:26,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:36:26,446 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:26,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 180 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:36:26,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-28 23:36:26,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2023-11-28 23:36:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-28 23:36:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2023-11-28 23:36:26,461 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 32 [2023-11-28 23:36:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:26,462 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2023-11-28 23:36:26,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 23:36:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2023-11-28 23:36:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-28 23:36:26,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:26,464 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:26,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:36:26,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:26,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:26,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash 581538888, now seen corresponding path program 1 times [2023-11-28 23:36:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:26,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533674107] [2023-11-28 23:36:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:26,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291354247] [2023-11-28 23:36:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:26,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:26,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:26,687 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:26,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:36:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:26,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:36:26,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:36:26,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:36:26,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:26,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533674107] [2023-11-28 23:36:26,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:26,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291354247] [2023-11-28 23:36:26,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291354247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:26,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:36:26,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-11-28 23:36:26,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985073818] [2023-11-28 23:36:26,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:26,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:36:26,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:26,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:36:26,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:36:26,908 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:36:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:27,110 INFO L93 Difference]: Finished difference Result 98 states and 138 transitions. [2023-11-28 23:36:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:36:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-11-28 23:36:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:27,113 INFO L225 Difference]: With dead ends: 98 [2023-11-28 23:36:27,113 INFO L226 Difference]: Without dead ends: 91 [2023-11-28 23:36:27,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:36:27,114 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 62 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:27,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 191 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:36:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-28 23:36:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2023-11-28 23:36:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 46 states have internal predecessors, (57), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-28 23:36:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2023-11-28 23:36:27,136 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 34 [2023-11-28 23:36:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:27,136 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2023-11-28 23:36:27,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:36:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2023-11-28 23:36:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-28 23:36:27,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:27,138 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:27,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:36:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:27,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:27,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1534715754, now seen corresponding path program 1 times [2023-11-28 23:36:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:27,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543092133] [2023-11-28 23:36:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:27,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:27,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164376276] [2023-11-28 23:36:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:27,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:27,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:27,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:27,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:36:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:27,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-28 23:36:27,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:36:27,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:28,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:28,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543092133] [2023-11-28 23:36:28,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:28,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164376276] [2023-11-28 23:36:28,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164376276] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:28,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:36:28,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-28 23:36:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72413451] [2023-11-28 23:36:28,679 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:28,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:36:28,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:36:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:36:28,681 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-28 23:36:29,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:29,093 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2023-11-28 23:36:29,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:36:29,093 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 37 [2023-11-28 23:36:29,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:29,095 INFO L225 Difference]: With dead ends: 81 [2023-11-28 23:36:29,095 INFO L226 Difference]: Without dead ends: 79 [2023-11-28 23:36:29,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-11-28 23:36:29,096 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:29,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 164 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:36:29,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-28 23:36:29,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2023-11-28 23:36:29,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.25) internal successors, (60), 49 states have internal predecessors, (60), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-28 23:36:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2023-11-28 23:36:29,116 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 37 [2023-11-28 23:36:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:29,117 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2023-11-28 23:36:29,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-28 23:36:29,117 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2023-11-28 23:36:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-28 23:36:29,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:29,118 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:29,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:36:29,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:29,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:29,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1190433772, now seen corresponding path program 1 times [2023-11-28 23:36:29,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:29,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617135162] [2023-11-28 23:36:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:29,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:29,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:29,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291105670] [2023-11-28 23:36:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:29,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:29,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:29,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:29,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:36:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:29,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-28 23:36:29,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:36:29,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:36:29,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:29,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617135162] [2023-11-28 23:36:29,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291105670] [2023-11-28 23:36:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291105670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:29,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:36:29,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2023-11-28 23:36:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407554269] [2023-11-28 23:36:29,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:29,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:36:29,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:29,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:36:29,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:36:29,712 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-28 23:36:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:31,401 INFO L93 Difference]: Finished difference Result 113 states and 154 transitions. [2023-11-28 23:36:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:36:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2023-11-28 23:36:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:31,404 INFO L225 Difference]: With dead ends: 113 [2023-11-28 23:36:31,404 INFO L226 Difference]: Without dead ends: 111 [2023-11-28 23:36:31,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:36:31,405 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 65 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:31,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 284 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-28 23:36:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-28 23:36:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2023-11-28 23:36:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 70 states have internal predecessors, (87), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-28 23:36:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2023-11-28 23:36:31,424 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 37 [2023-11-28 23:36:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:31,424 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2023-11-28 23:36:31,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-28 23:36:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2023-11-28 23:36:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-28 23:36:31,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:31,426 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:31,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:36:31,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:31,626 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:31,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:31,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1246105370, now seen corresponding path program 1 times [2023-11-28 23:36:31,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:31,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172438055] [2023-11-28 23:36:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:31,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:31,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:31,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738171738] [2023-11-28 23:36:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:31,640 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:31,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:36:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:31,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:36:31,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:36:31,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-28 23:36:33,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:33,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172438055] [2023-11-28 23:36:33,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:33,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738171738] [2023-11-28 23:36:33,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738171738] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:33,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:36:33,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-11-28 23:36:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491479996] [2023-11-28 23:36:33,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:36:33,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:36:33,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:36:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:36:33,688 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-28 23:36:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:33,759 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2023-11-28 23:36:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:36:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-11-28 23:36:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:33,762 INFO L225 Difference]: With dead ends: 146 [2023-11-28 23:36:33,763 INFO L226 Difference]: Without dead ends: 144 [2023-11-28 23:36:33,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:36:33,764 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:33,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:36:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-28 23:36:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2023-11-28 23:36:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 87 states have internal predecessors, (111), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-28 23:36:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 200 transitions. [2023-11-28 23:36:33,799 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 200 transitions. Word has length 42 [2023-11-28 23:36:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:33,800 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 200 transitions. [2023-11-28 23:36:33,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-28 23:36:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 200 transitions. [2023-11-28 23:36:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-28 23:36:33,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:33,801 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:33,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:36:34,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:34,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:34,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1174265188, now seen corresponding path program 1 times [2023-11-28 23:36:34,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:34,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214765407] [2023-11-28 23:36:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:34,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:34,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385175411] [2023-11-28 23:36:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:34,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:34,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:34,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:34,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:36:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:34,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-28 23:36:34,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:36:34,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:36:34,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:34,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214765407] [2023-11-28 23:36:34,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:34,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385175411] [2023-11-28 23:36:34,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385175411] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:34,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:36:34,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 20 [2023-11-28 23:36:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836459723] [2023-11-28 23:36:34,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:34,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 23:36:34,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 23:36:34,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:36:34,768 INFO L87 Difference]: Start difference. First operand 138 states and 200 transitions. Second operand has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 16 states have internal predecessors, (41), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-28 23:36:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:37,330 INFO L93 Difference]: Finished difference Result 185 states and 260 transitions. [2023-11-28 23:36:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-28 23:36:37,331 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 16 states have internal predecessors, (41), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 42 [2023-11-28 23:36:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:37,334 INFO L225 Difference]: With dead ends: 185 [2023-11-28 23:36:37,334 INFO L226 Difference]: Without dead ends: 183 [2023-11-28 23:36:37,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=296, Invalid=1186, Unknown=0, NotChecked=0, Total=1482 [2023-11-28 23:36:37,335 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 197 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:37,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 252 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 23:36:37,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-28 23:36:37,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 174. [2023-11-28 23:36:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 116 states have internal predecessors, (140), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (53), 49 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-28 23:36:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 247 transitions. [2023-11-28 23:36:37,393 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 247 transitions. Word has length 42 [2023-11-28 23:36:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:37,394 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 247 transitions. [2023-11-28 23:36:37,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 16 states have internal predecessors, (41), 5 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-28 23:36:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 247 transitions. [2023-11-28 23:36:37,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-28 23:36:37,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:37,395 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:37,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:36:37,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:37,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:37,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash -829983206, now seen corresponding path program 2 times [2023-11-28 23:36:37,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:37,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723013143] [2023-11-28 23:36:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:37,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:37,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734532989] [2023-11-28 23:36:37,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:36:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:37,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:37,610 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:37,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:36:37,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:36:37,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:36:37,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:36:37,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:36:37,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:36:37,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:37,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723013143] [2023-11-28 23:36:37,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:37,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734532989] [2023-11-28 23:36:37,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734532989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:36:37,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:36:37,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:36:37,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116063549] [2023-11-28 23:36:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:36:37,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:36:37,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:37,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:36:37,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:36:37,689 INFO L87 Difference]: Start difference. First operand 174 states and 247 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 23:36:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:37,795 INFO L93 Difference]: Finished difference Result 220 states and 307 transitions. [2023-11-28 23:36:37,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:36:37,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2023-11-28 23:36:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:37,797 INFO L225 Difference]: With dead ends: 220 [2023-11-28 23:36:37,797 INFO L226 Difference]: Without dead ends: 139 [2023-11-28 23:36:37,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:36:37,799 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 19 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:37,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 155 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:36:37,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-28 23:36:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2023-11-28 23:36:37,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 75 states have internal predecessors, (84), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-28 23:36:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2023-11-28 23:36:37,832 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 42 [2023-11-28 23:36:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:37,833 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2023-11-28 23:36:37,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 23:36:37,833 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2023-11-28 23:36:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-28 23:36:37,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:37,834 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:37,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:36:38,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-28 23:36:38,035 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:38,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash 225223382, now seen corresponding path program 1 times [2023-11-28 23:36:38,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:38,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882306868] [2023-11-28 23:36:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:38,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:38,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:38,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413638152] [2023-11-28 23:36:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:38,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:38,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:38,045 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:38,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:36:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:38,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:36:38,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-28 23:36:38,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:36:38,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:38,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882306868] [2023-11-28 23:36:38,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:38,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413638152] [2023-11-28 23:36:38,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413638152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:36:38,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:36:38,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:36:38,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533665871] [2023-11-28 23:36:38,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:36:38,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:36:38,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:36:38,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:36:38,141 INFO L87 Difference]: Start difference. First operand 116 states and 155 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 23:36:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:38,270 INFO L93 Difference]: Finished difference Result 154 states and 217 transitions. [2023-11-28 23:36:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:36:38,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-11-28 23:36:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:38,273 INFO L225 Difference]: With dead ends: 154 [2023-11-28 23:36:38,273 INFO L226 Difference]: Without dead ends: 152 [2023-11-28 23:36:38,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:36:38,274 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:38,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 152 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:36:38,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-28 23:36:38,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2023-11-28 23:36:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 86 states have internal predecessors, (91), 55 states have call successors, (55), 9 states have call predecessors, (55), 9 states have return successors, (54), 47 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-28 23:36:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 200 transitions. [2023-11-28 23:36:38,337 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 200 transitions. Word has length 47 [2023-11-28 23:36:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:38,338 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 200 transitions. [2023-11-28 23:36:38,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 23:36:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 200 transitions. [2023-11-28 23:36:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-28 23:36:38,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:38,339 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:38,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:36:38,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:36:38,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:38,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:38,540 INFO L85 PathProgramCache]: Analyzing trace with hash 371933676, now seen corresponding path program 1 times [2023-11-28 23:36:38,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:38,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696826925] [2023-11-28 23:36:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:38,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:38,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:38,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961831923] [2023-11-28 23:36:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:38,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:38,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:38,553 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:38,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:36:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:38,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-28 23:36:38,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-28 23:36:39,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-28 23:36:40,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696826925] [2023-11-28 23:36:40,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961831923] [2023-11-28 23:36:40,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961831923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:40,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:36:40,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2023-11-28 23:36:40,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904445588] [2023-11-28 23:36:40,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:40,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-28 23:36:40,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:40,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-28 23:36:40,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-11-28 23:36:40,141 INFO L87 Difference]: Start difference. First operand 143 states and 200 transitions. Second operand has 26 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-28 23:36:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:51,358 INFO L93 Difference]: Finished difference Result 379 states and 546 transitions. [2023-11-28 23:36:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-28 23:36:51,359 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 59 [2023-11-28 23:36:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:51,362 INFO L225 Difference]: With dead ends: 379 [2023-11-28 23:36:51,362 INFO L226 Difference]: Without dead ends: 272 [2023-11-28 23:36:51,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=474, Invalid=2282, Unknown=0, NotChecked=0, Total=2756 [2023-11-28 23:36:51,364 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 164 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:51,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 357 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-28 23:36:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-28 23:36:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 227. [2023-11-28 23:36:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 138 states have (on average 1.181159420289855) internal successors, (163), 145 states have internal predecessors, (163), 75 states have call successors, (75), 13 states have call predecessors, (75), 13 states have return successors, (74), 68 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-28 23:36:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 312 transitions. [2023-11-28 23:36:51,498 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 312 transitions. Word has length 59 [2023-11-28 23:36:51,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:51,499 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 312 transitions. [2023-11-28 23:36:51,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-28 23:36:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 312 transitions. [2023-11-28 23:36:51,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-28 23:36:51,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:51,501 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:51,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:36:51,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-28 23:36:51,701 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:51,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:51,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1835197705, now seen corresponding path program 1 times [2023-11-28 23:36:51,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:51,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077500761] [2023-11-28 23:36:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:51,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:51,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:51,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273438110] [2023-11-28 23:36:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:51,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:51,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:51,710 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:51,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:36:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:51,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-28 23:36:51,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-28 23:36:51,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-28 23:36:52,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:52,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077500761] [2023-11-28 23:36:52,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:52,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273438110] [2023-11-28 23:36:52,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273438110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:52,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:36:52,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 19 [2023-11-28 23:36:52,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576828135] [2023-11-28 23:36:52,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:52,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:36:52,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:36:52,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:36:52,111 INFO L87 Difference]: Start difference. First operand 227 states and 312 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 8 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-28 23:36:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:52,564 INFO L93 Difference]: Finished difference Result 361 states and 497 transitions. [2023-11-28 23:36:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:36:52,565 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 8 states have call predecessors, (22), 5 states have call successors, (22) Word has length 69 [2023-11-28 23:36:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:52,566 INFO L225 Difference]: With dead ends: 361 [2023-11-28 23:36:52,566 INFO L226 Difference]: Without dead ends: 233 [2023-11-28 23:36:52,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2023-11-28 23:36:52,568 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 78 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:52,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 259 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:36:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-28 23:36:52,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2023-11-28 23:36:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 148 states have internal predecessors, (166), 75 states have call successors, (75), 14 states have call predecessors, (75), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-28 23:36:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 315 transitions. [2023-11-28 23:36:52,750 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 315 transitions. Word has length 69 [2023-11-28 23:36:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:52,751 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 315 transitions. [2023-11-28 23:36:52,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 8 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-28 23:36:52,751 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 315 transitions. [2023-11-28 23:36:52,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-28 23:36:52,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:52,752 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:52,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:36:52,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:52,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:52,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash 791958698, now seen corresponding path program 1 times [2023-11-28 23:36:52,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:52,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466507027] [2023-11-28 23:36:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:52,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:52,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:52,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536351530] [2023-11-28 23:36:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:52,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:52,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:52,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:52,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:36:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:53,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:36:53,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-28 23:36:53,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-28 23:36:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466507027] [2023-11-28 23:36:53,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536351530] [2023-11-28 23:36:53,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536351530] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:53,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:36:53,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-28 23:36:53,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650016365] [2023-11-28 23:36:53,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:53,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:36:53,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:36:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:36:53,246 INFO L87 Difference]: Start difference. First operand 232 states and 315 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-28 23:36:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:53,604 INFO L93 Difference]: Finished difference Result 340 states and 462 transitions. [2023-11-28 23:36:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:36:53,605 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 67 [2023-11-28 23:36:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:53,607 INFO L225 Difference]: With dead ends: 340 [2023-11-28 23:36:53,607 INFO L226 Difference]: Without dead ends: 221 [2023-11-28 23:36:53,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:36:53,608 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:53,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 250 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:36:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-28 23:36:53,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2023-11-28 23:36:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 121 states have (on average 1.140495867768595) internal successors, (138), 126 states have internal predecessors, (138), 71 states have call successors, (71), 14 states have call predecessors, (71), 14 states have return successors, (70), 66 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-28 23:36:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 279 transitions. [2023-11-28 23:36:53,754 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 279 transitions. Word has length 67 [2023-11-28 23:36:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:53,754 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 279 transitions. [2023-11-28 23:36:53,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-28 23:36:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 279 transitions. [2023-11-28 23:36:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-28 23:36:53,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:53,756 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:53,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:36:53,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:53,956 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:36:53,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash 807741843, now seen corresponding path program 1 times [2023-11-28 23:36:53,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:53,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323500334] [2023-11-28 23:36:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:53,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:53,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:53,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256251082] [2023-11-28 23:36:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:53,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:53,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:53,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:53,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:36:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:54,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-28 23:36:54,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-28 23:36:55,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:37:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-28 23:37:01,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:37:01,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323500334] [2023-11-28 23:37:01,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:37:01,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256251082] [2023-11-28 23:37:01,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256251082] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:37:01,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:37:01,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 33 [2023-11-28 23:37:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60420950] [2023-11-28 23:37:01,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:37:01,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-28 23:37:01,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:37:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-28 23:37:01,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2023-11-28 23:37:01,891 INFO L87 Difference]: Start difference. First operand 207 states and 279 transitions. Second operand has 33 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 10 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2023-11-28 23:37:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:37:16,660 INFO L93 Difference]: Finished difference Result 349 states and 467 transitions. [2023-11-28 23:37:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-28 23:37:16,661 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 10 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) Word has length 86 [2023-11-28 23:37:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:37:16,663 INFO L225 Difference]: With dead ends: 349 [2023-11-28 23:37:16,663 INFO L226 Difference]: Without dead ends: 222 [2023-11-28 23:37:16,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=927, Invalid=3495, Unknown=0, NotChecked=0, Total=4422 [2023-11-28 23:37:16,665 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 217 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:37:16,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 506 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-28 23:37:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-28 23:37:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2023-11-28 23:37:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 128 states have (on average 1.15625) internal successors, (148), 132 states have internal predecessors, (148), 77 states have call successors, (77), 14 states have call predecessors, (77), 14 states have return successors, (76), 73 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-28 23:37:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 301 transitions. [2023-11-28 23:37:16,846 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 301 transitions. Word has length 86 [2023-11-28 23:37:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:37:16,847 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 301 transitions. [2023-11-28 23:37:16,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 10 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2023-11-28 23:37:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 301 transitions. [2023-11-28 23:37:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-28 23:37:16,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:37:16,848 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:37:16,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:37:17,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:37:17,049 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:37:17,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:37:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash -945949089, now seen corresponding path program 1 times [2023-11-28 23:37:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:37:17,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153322234] [2023-11-28 23:37:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:37:17,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:37:17,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937558752] [2023-11-28 23:37:17,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:17,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:37:17,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:37:17,059 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:37:17,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:37:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:37:17,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:37:17,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:37:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-28 23:37:17,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:37:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-28 23:37:17,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:37:17,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153322234] [2023-11-28 23:37:17,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:37:17,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937558752] [2023-11-28 23:37:17,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937558752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:37:17,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:37:17,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-11-28 23:37:17,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565690721] [2023-11-28 23:37:17,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:37:17,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 23:37:17,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:37:17,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 23:37:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:37:17,410 INFO L87 Difference]: Start difference. First operand 220 states and 301 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2023-11-28 23:37:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:37:17,967 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2023-11-28 23:37:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:37:17,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 89 [2023-11-28 23:37:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:37:17,970 INFO L225 Difference]: With dead ends: 360 [2023-11-28 23:37:17,970 INFO L226 Difference]: Without dead ends: 214 [2023-11-28 23:37:17,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2023-11-28 23:37:17,971 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 43 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:37:17,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 375 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:37:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-28 23:37:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 208. [2023-11-28 23:37:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 124 states have (on average 1.153225806451613) internal successors, (143), 125 states have internal predecessors, (143), 69 states have call successors, (69), 14 states have call predecessors, (69), 14 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-28 23:37:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 280 transitions. [2023-11-28 23:37:18,147 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 280 transitions. Word has length 89 [2023-11-28 23:37:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:37:18,147 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 280 transitions. [2023-11-28 23:37:18,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2023-11-28 23:37:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 280 transitions. [2023-11-28 23:37:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-28 23:37:18,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:37:18,148 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:37:18,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:37:18,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 23:37:18,349 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:37:18,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:37:18,349 INFO L85 PathProgramCache]: Analyzing trace with hash 928647649, now seen corresponding path program 1 times [2023-11-28 23:37:18,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:37:18,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152500396] [2023-11-28 23:37:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:18,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:37:18,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:37:18,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865046270] [2023-11-28 23:37:18,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:18,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:37:18,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:37:18,361 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:37:18,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:37:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:37:18,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:37:18,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:37:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 58 proven. 19 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-28 23:37:18,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:37:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-28 23:37:19,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:37:19,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152500396] [2023-11-28 23:37:19,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:37:19,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865046270] [2023-11-28 23:37:19,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865046270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:37:19,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:37:19,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-11-28 23:37:19,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723414183] [2023-11-28 23:37:19,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:37:19,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:37:19,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:37:19,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:37:19,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:37:19,177 INFO L87 Difference]: Start difference. First operand 208 states and 280 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-28 23:37:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:37:19,838 INFO L93 Difference]: Finished difference Result 212 states and 283 transitions. [2023-11-28 23:37:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:37:19,838 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) Word has length 89 [2023-11-28 23:37:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:37:19,839 INFO L225 Difference]: With dead ends: 212 [2023-11-28 23:37:19,839 INFO L226 Difference]: Without dead ends: 0 [2023-11-28 23:37:19,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2023-11-28 23:37:19,840 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 52 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:37:19,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 363 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:37:19,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-28 23:37:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-28 23:37:19,841 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) [2023-11-28 23:37:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-28 23:37:19,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 89 [2023-11-28 23:37:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:37:19,841 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-28 23:37:19,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-28 23:37:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-28 23:37:19,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-28 23:37:19,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-28 23:37:19,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 23:37:20,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:37:20,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-28 23:37:23,558 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (let ((.cse3 (mod |ULTIMATE.start_main_~b~0#1| 2))) (let ((.cse2 (* 2 (div (+ |ULTIMATE.start_main_~b~0#1| .cse3) 2)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) .cse0 .cse1 (<= |ULTIMATE.start_main_~a~0#1| 2) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) (<= (+ (* 2 |ULTIMATE.start_main_~b~0#1|) .cse2) .cse3) .cse4 .cse5 .cse6 (<= .cse3 .cse2)))) (and (= |ULTIMATE.start_main_~b~0#1| 1) .cse0 .cse1 (= 2 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) .cse5) (and (<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~y~0#1|) .cse7 (<= |ULTIMATE.start_main_~y~0#1| 2) .cse8 .cse4 (= (+ 2 |ULTIMATE.start_main_~q~0#1|) 0) .cse9 (= |ULTIMATE.start_main_~y~0#1| (+ (* 2 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~b~0#1|)) .cse10) (and .cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse8 (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 .cse9 .cse6 .cse10))) [2023-11-28 23:37:23,558 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (and (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) (or (= |ULTIMATE.start_main_~b~0#1| 0) (= .cse0 |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2))) [2023-11-28 23:37:23,559 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-11-28 23:37:23,559 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2023-11-28 23:37:23,559 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-11-28 23:37:23,559 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-11-28 23:37:23,559 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2023-11-28 23:37:23,559 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-11-28 23:37:23,559 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2023-11-28 23:37:23,559 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-11-28 23:37:23,559 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-28 23:37:23,559 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-11-28 23:37:23,560 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-11-28 23:37:23,560 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-11-28 23:37:23,560 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-28 23:37:23,560 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (+ |ULTIMATE.start_main_~c~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse15 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse17 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse12 (* 2 |ULTIMATE.start_main_~b~0#1|))) (or (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse2 .cse3 .cse4 .cse7 (<= .cse10 |ULTIMATE.start_main_~b~0#1|) .cse8 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse9 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (let ((.cse13 (mod |ULTIMATE.start_main_~c~0#1| 2))) (let ((.cse11 (* (div (+ |ULTIMATE.start_main_~c~0#1| .cse13) 2) 2))) (and (= (+ |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse0 .cse2 .cse3 .cse4 (<= (+ .cse11 .cse12) (+ 2 .cse13)) (<= .cse10 .cse12) .cse6 (<= .cse13 .cse11) .cse7 .cse8 .cse9))) (and (= |ULTIMATE.start_main_~b~0#1| 1) .cse14 .cse1 (= 2 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1) .cse15 .cse5 .cse16 .cse17 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (and .cse14 (<= |ULTIMATE.start_main_~y~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse15 .cse16 .cse6 .cse17 (= (+ .cse12 |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~y~0#1|) (= 2 |ULTIMATE.start_main_~k~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|)))) [2023-11-28 23:37:23,560 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2023-11-28 23:37:23,560 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-11-28 23:37:23,560 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2023-11-28 23:37:23,560 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-11-28 23:37:23,561 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~d~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse14 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (.cse17 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0 (= 2 |ULTIMATE.start_main_~v~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) .cse3 (= 2 |ULTIMATE.start_main_~a~0#1|) (= 2 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse3 .cse13 .cse14 .cse15 .cse16 .cse17) (let ((.cse18 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse6 .cse0 (or (= (* 3 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse11 (let ((.cse19 (mod (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|) 2))) (< .cse19 (+ (* 2 (div (+ .cse19 (* (- 1) |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) 2)) 1))) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse14 (<= |ULTIMATE.start_main_~c~0#1| 2) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (or (= (* 2 |ULTIMATE.start_main_~y~0#1|) .cse18) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) .cse5)) (and .cse7 .cse8 .cse9 .cse10 .cse12 .cse3 .cse13 .cse14 .cse15 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse16 .cse4 .cse17))) [2023-11-28 23:37:23,561 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2023-11-28 23:37:23,561 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-11-28 23:37:23,561 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-11-28 23:37:23,561 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-11-28 23:37:23,561 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-11-28 23:37:23,561 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-11-28 23:37:23,561 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-11-28 23:37:23,561 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-11-28 23:37:23,561 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-11-28 23:37:23,561 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-11-28 23:37:23,561 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-11-28 23:37:23,564 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:37:23,565 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:37:23,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:37:23 BoogieIcfgContainer [2023-11-28 23:37:23,587 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:37:23,587 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:37:23,588 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:37:23,588 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:37:23,588 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:36:24" (3/4) ... [2023-11-28 23:37:23,590 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 23:37:23,594 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-28 23:37:23,594 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-28 23:37:23,598 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-28 23:37:23,598 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-28 23:37:23,598 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 23:37:23,599 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-28 23:37:23,693 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 23:37:23,694 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 23:37:23,694 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:37:23,695 INFO L158 Benchmark]: Toolchain (without parser) took 59713.42ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 114.4MB in the beginning and 100.3MB in the end (delta: 14.1MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2023-11-28 23:37:23,695 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 146.8MB. Free memory was 116.6MB in the beginning and 116.4MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:37:23,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.03ms. Allocated memory is still 146.8MB. Free memory was 114.2MB in the beginning and 115.8MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-28 23:37:23,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.39ms. Allocated memory is still 146.8MB. Free memory was 115.8MB in the beginning and 114.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:37:23,696 INFO L158 Benchmark]: Boogie Preprocessor took 36.20ms. Allocated memory is still 146.8MB. Free memory was 114.0MB in the beginning and 112.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:37:23,697 INFO L158 Benchmark]: RCFGBuilder took 291.20ms. Allocated memory is still 146.8MB. Free memory was 112.3MB in the beginning and 99.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-28 23:37:23,697 INFO L158 Benchmark]: TraceAbstraction took 58989.53ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 99.4MB in the beginning and 105.5MB in the end (delta: -6.2MB). Peak memory consumption was 88.8MB. Max. memory is 16.1GB. [2023-11-28 23:37:23,697 INFO L158 Benchmark]: Witness Printer took 106.77ms. Allocated memory is still 176.2MB. Free memory was 105.5MB in the beginning and 100.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-28 23:37:23,699 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 146.8MB. Free memory was 116.6MB in the beginning and 116.4MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.03ms. Allocated memory is still 146.8MB. Free memory was 114.2MB in the beginning and 115.8MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.39ms. Allocated memory is still 146.8MB. Free memory was 115.8MB in the beginning and 114.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.20ms. Allocated memory is still 146.8MB. Free memory was 114.0MB in the beginning and 112.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.20ms. Allocated memory is still 146.8MB. Free memory was 112.3MB in the beginning and 99.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 58989.53ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 99.4MB in the beginning and 105.5MB in the end (delta: -6.2MB). Peak memory consumption was 88.8MB. Max. memory is 16.1GB. * Witness Printer took 106.77ms. Allocated memory is still 176.2MB. Free memory was 105.5MB in the beginning and 100.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 13]: 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 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.9s, OverallIterations: 16, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 33.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1125 SdHoareTripleChecker+Valid, 14.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1080 mSDsluCounter, 3756 SdHoareTripleChecker+Invalid, 14.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3237 mSDsCounter, 733 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3553 IncrementalHoareTripleChecker+Invalid, 4286 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 733 mSolverCounterUnsat, 519 mSDtfsCounter, 3553 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1598 GetRequests, 1240 SyntacticMatches, 8 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2604 ImplicationChecksByTransitivity, 26.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=12, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 171 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 329 PreInvPairs, 366 NumberOfFragments, 1505 HoareAnnotationTreeSize, 329 FomulaSimplifications, 13061 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 14 FomulaSimplificationsInter, 1637 FormulaSimplificationTreeSizeReductionInter, 3.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 857 NumberOfCodeBlocks, 857 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1448 ConstructedInterpolants, 2 QuantifiedInterpolants, 8658 SizeOfPredicates, 89 NumberOfNonLiveVariables, 2213 ConjunctsInSsa, 410 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 1942/2195 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: 42]: Loop Invariant Derived loop invariant: ((((((((((((((((p == 1) && (a == c)) && (b == y)) && (b <= 2)) && (1 <= b)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (a == x)) && (x <= 2)) && (s == 1)) || (((((((((((k == 1) && (p == 1)) && (b == y)) && (r == 0)) && (q == 0)) && (a == x)) && ((c + 1) <= b)) && (x <= 2)) && (b <= x)) && (s == 1)) && ((b + c) == x))) || (((((((((((((y + (k * y)) == (b + x)) && (p == 1)) && (b == y)) && (r == 0)) && (q == 0)) && (((((c + (c % 2)) / 2) * 2) + (2 * b)) <= (2 + (c % 2)))) && ((c + 1) <= (2 * b))) && (1 <= x)) && ((c % 2) <= (((c + (c % 2)) / 2) * 2))) && (a == x)) && (x <= 2)) && (s == 1))) || ((((((((((b == 1) && (p == 0)) && (a == c)) && (2 == y)) && (x == 1)) && (q == 1)) && (k == 0)) && (s == 0)) && (r == 1)) && (c == y))) || (((((((((((p == 0) && (y <= 2)) && (a == y)) && (b == x)) && (q == 1)) && (s == 0)) && (1 <= x)) && (r == 1)) && (((2 * b) + c) == y)) && (2 == k)) && ((b + 1) <= y))) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((((b == 1) && (2 == x)) && (p == 1)) && (2 == v)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (2 == a)) && (2 == c)) && (2 == d)) && (s == 1)) || (((((((((((((d == 1) && (p == 0)) && (y <= 2)) && (a == c)) && (b == x)) && (b == v)) && (q == 1)) && (k == 0)) && (s == 0)) && (1 <= x)) && (r == 1)) && (c == y)) && ((b + 1) <= y))) || (((((((((((((((d == 1) && (p == 1)) && (((3 * y) == (b + x)) || !(((2 * v) == c)))) && (b == v)) && (((c + v) % 2) < ((2 * (((((c + v) % 2) + (-1 * v)) + c) / 2)) + 1))) && (1 <= b)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (c <= 2)) && (a == x)) && (x <= 2)) && (((2 * y) == (b + x)) || !((c == v)))) && (s == 1))) || (((((((((((((p == 0) && (y <= 2)) && (a == c)) && (b == x)) && (q == 1)) && (k == 0)) && (s == 0)) && (1 <= x)) && (r == 1)) && ((2 * b) == v)) && (c == y)) && (2 == d)) && ((b + 1) <= y))) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((y == ((a + (s * y)) + (q * x))) && (p == 0)) && (a == y)) && (a <= 2)) && ((b + 1) <= a)) && (((2 * b) + (2 * ((b + (b % 2)) / 2))) <= (b % 2))) && (1 <= x)) && (r == 1)) && (x <= 2)) && ((b % 2) <= (2 * ((b + (b % 2)) / 2)))) || ((((((((b == 1) && (p == 0)) && (a == y)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1))) || ((((((((((x + 1) <= y) && (p == 1)) && (y <= 2)) && (r == 0)) && (1 <= x)) && ((2 + q) == 0)) && (a == x)) && (y == ((2 * x) + b))) && (s == 1))) || ((((((((((p == 1) && (b == y)) && (b <= 2)) && (1 <= b)) && (r == 0)) && (q == 0)) && (1 <= x)) && (a == x)) && (x <= 2)) && (s == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-28 23:37:23,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1089e9-c77e-43b2-bb40-fd235d9f2b57/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