./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:20:10,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:20:10,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:20:10,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:20:10,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:20:10,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:20:10,739 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:20:10,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:20:10,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:20:10,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:20:10,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:20:10,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:20:10,748 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:20:10,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:20:10,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:20:10,751 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:20:10,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:20:10,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:20:10,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:20:10,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:20:10,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:20:10,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:20:10,754 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:20:10,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:20:10,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:20:10,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:20:10,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:20:10,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:20:10,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:20:10,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:20:10,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:20:10,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:20:10,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:20:10,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:20:10,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:20:10,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:20:10,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:20:10,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:20:10,761 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:20:10,761 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_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d [2023-11-06 22:20:11,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:20:11,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:20:11,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:20:11,118 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:20:11,119 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:20:11,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2023-11-06 22:20:14,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:20:14,672 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:20:14,673 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2023-11-06 22:20:14,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/data/25b67c3e1/83ce85b72a724aebb5a851af44c4c267/FLAG80c1d746b [2023-11-06 22:20:14,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/data/25b67c3e1/83ce85b72a724aebb5a851af44c4c267 [2023-11-06 22:20:14,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:20:14,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:20:14,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:20:14,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:20:14,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:20:14,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:20:14" (1/1) ... [2023-11-06 22:20:14,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134ecb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:14, skipping insertion in model container [2023-11-06 22:20:14,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:20:14" (1/1) ... [2023-11-06 22:20:14,790 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:20:15,013 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_39495a08-6182-4d42-8f4b-43c5d3ae3038/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c[537,550] [2023-11-06 22:20:15,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:20:15,039 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:20:15,053 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_39495a08-6182-4d42-8f4b-43c5d3ae3038/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c[537,550] [2023-11-06 22:20:15,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:20:15,074 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:20:15,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15 WrapperNode [2023-11-06 22:20:15,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:20:15,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:20:15,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:20:15,077 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:20:15,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,112 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-11-06 22:20:15,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:20:15,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:20:15,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:20:15,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:20:15,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,132 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:20:15,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:20:15,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:20:15,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:20:15,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (1/1) ... [2023-11-06 22:20:15,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:20:15,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:15,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:20:15,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:20:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:20:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:20:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:20:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:20:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:20:15,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:20:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:20:15,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:20:15,279 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:20:15,281 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:20:15,436 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:20:15,443 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:20:15,444 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:20:15,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:15 BoogieIcfgContainer [2023-11-06 22:20:15,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:20:15,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:20:15,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:20:15,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:20:15,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:20:14" (1/3) ... [2023-11-06 22:20:15,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d5291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:15, skipping insertion in model container [2023-11-06 22:20:15,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:15" (2/3) ... [2023-11-06 22:20:15,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d5291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:15, skipping insertion in model container [2023-11-06 22:20:15,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:15" (3/3) ... [2023-11-06 22:20:15,467 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound2.c [2023-11-06 22:20:15,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:20:15,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:20:15,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:20:15,551 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=LoopsAndPotentialCycles, 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;@3b60212d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:20:15,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:20:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:20:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:20:15,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:15,566 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:15,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:15,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2023-11-06 22:20:15,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:15,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198135503] [2023-11-06 22:20:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:15,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198135503] [2023-11-06 22:20:15,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:20:15,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299393709] [2023-11-06 22:20:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:15,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:15,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:15,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:15,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:20:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:15,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:20:15,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:20:15,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:15,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299393709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:15,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:15,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565705905] [2023-11-06 22:20:15,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:15,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:20:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:20:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:20:15,975 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:20:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:16,002 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-11-06 22:20:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:20:16,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-11-06 22:20:16,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:16,011 INFO L225 Difference]: With dead ends: 51 [2023-11-06 22:20:16,011 INFO L226 Difference]: Without dead ends: 23 [2023-11-06 22:20:16,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:20:16,018 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:16,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:20:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-06 22:20:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-06 22:20:16,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:20:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-06 22:20:16,056 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2023-11-06 22:20:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:16,058 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-06 22:20:16,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:20:16,058 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-06 22:20:16,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:20:16,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:16,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:16,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:16,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:16,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:16,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2023-11-06 22:20:16,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:16,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929180418] [2023-11-06 22:20:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:16,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:16,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472203298] [2023-11-06 22:20:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:16,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:16,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:16,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:20:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:16,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:20:16,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:20:16,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:16,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:16,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929180418] [2023-11-06 22:20:16,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:16,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472203298] [2023-11-06 22:20:16,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472203298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:16,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:16,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:20:16,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038389531] [2023-11-06 22:20:16,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:20:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:20:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:20:16,577 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:20:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:16,710 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-11-06 22:20:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:20:16,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-06 22:20:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:16,712 INFO L225 Difference]: With dead ends: 39 [2023-11-06 22:20:16,712 INFO L226 Difference]: Without dead ends: 32 [2023-11-06 22:20:16,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:20:16,715 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:16,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 91 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-06 22:20:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-06 22:20:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:20:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-11-06 22:20:16,726 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2023-11-06 22:20:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:16,728 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-11-06 22:20:16,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:20:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-11-06 22:20:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:20:16,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:16,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:16,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:16,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:16,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:16,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2023-11-06 22:20:16,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:16,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407247288] [2023-11-06 22:20:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:16,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:16,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:16,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393299302] [2023-11-06 22:20:16,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:16,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:16,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:16,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:17,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:20:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:17,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:20:17,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:20:17,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:20:19,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407247288] [2023-11-06 22:20:19,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:19,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393299302] [2023-11-06 22:20:19,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393299302] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:19,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:19,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-06 22:20:19,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615036142] [2023-11-06 22:20:19,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:19,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:19,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:19,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:19,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:20:19,896 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:20:20,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:20,537 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2023-11-06 22:20:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:20:20,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-11-06 22:20:20,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:20,539 INFO L225 Difference]: With dead ends: 43 [2023-11-06 22:20:20,539 INFO L226 Difference]: Without dead ends: 41 [2023-11-06 22:20:20,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:20:20,542 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:20,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 87 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:20:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-06 22:20:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2023-11-06 22:20:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:20:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2023-11-06 22:20:20,555 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 33 [2023-11-06 22:20:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:20,556 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2023-11-06 22:20:20,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:20:20,557 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2023-11-06 22:20:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:20:20,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:20,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:20,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:20,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:20:20,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:20,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times [2023-11-06 22:20:20,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:20,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557577515] [2023-11-06 22:20:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:20,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:20,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233135128] [2023-11-06 22:20:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:20,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:20,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:20,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:20,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:20:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:20:20,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:20:21,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:20:22,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557577515] [2023-11-06 22:20:22,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:22,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233135128] [2023-11-06 22:20:22,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233135128] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:22,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:20:22,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2023-11-06 22:20:22,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28361098] [2023-11-06 22:20:22,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:22,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:20:22,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:20:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:20:22,459 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 17 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:20:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:23,954 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2023-11-06 22:20:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:20:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 17 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2023-11-06 22:20:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:23,958 INFO L225 Difference]: With dead ends: 64 [2023-11-06 22:20:23,958 INFO L226 Difference]: Without dead ends: 57 [2023-11-06 22:20:23,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:20:23,961 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:23,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 136 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:20:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-06 22:20:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-06 22:20:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-06 22:20:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-11-06 22:20:23,978 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 33 [2023-11-06 22:20:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:23,979 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-11-06 22:20:23,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 17 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:20:23,979 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-11-06 22:20:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 22:20:23,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:23,981 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:23,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:24,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:24,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:24,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times [2023-11-06 22:20:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173499705] [2023-11-06 22:20:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:24,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:24,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:24,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530562146] [2023-11-06 22:20:24,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:24,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:24,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:24,211 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:24,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:20:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:24,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:20:24,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:20:24,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:20:24,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:24,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173499705] [2023-11-06 22:20:24,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:24,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530562146] [2023-11-06 22:20:24,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530562146] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:24,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:20:24,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-11-06 22:20:24,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779678742] [2023-11-06 22:20:24,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:24,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:20:24,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:20:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:20:24,482 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:20:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:24,643 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2023-11-06 22:20:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:20:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-11-06 22:20:24,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:24,645 INFO L225 Difference]: With dead ends: 64 [2023-11-06 22:20:24,645 INFO L226 Difference]: Without dead ends: 57 [2023-11-06 22:20:24,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:20:24,647 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:24,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 143 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-06 22:20:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2023-11-06 22:20:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-06 22:20:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2023-11-06 22:20:24,662 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 39 [2023-11-06 22:20:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:24,662 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2023-11-06 22:20:24,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:20:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2023-11-06 22:20:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 22:20:24,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:24,665 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:24,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:24,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:24,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:24,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:24,877 INFO L85 PathProgramCache]: Analyzing trace with hash -662815268, now seen corresponding path program 1 times [2023-11-06 22:20:24,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:24,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687051899] [2023-11-06 22:20:24,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:24,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:24,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:24,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263569817] [2023-11-06 22:20:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:24,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:24,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:24,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:24,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:20:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:24,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:20:24,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:20:25,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:20:25,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:25,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687051899] [2023-11-06 22:20:25,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:25,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263569817] [2023-11-06 22:20:25,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263569817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:25,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:20:25,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-11-06 22:20:25,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955469437] [2023-11-06 22:20:25,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:25,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:20:25,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:25,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:20:25,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:20:25,490 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:20:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:25,684 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2023-11-06 22:20:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:20:25,685 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 42 [2023-11-06 22:20:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:25,686 INFO L225 Difference]: With dead ends: 86 [2023-11-06 22:20:25,686 INFO L226 Difference]: Without dead ends: 47 [2023-11-06 22:20:25,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:20:25,688 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:25,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 106 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-06 22:20:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-06 22:20:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 22:20:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2023-11-06 22:20:25,702 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 42 [2023-11-06 22:20:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:25,703 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2023-11-06 22:20:25,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:20:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2023-11-06 22:20:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 22:20:25,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:25,705 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:25,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:25,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:25,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:25,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:25,931 INFO L85 PathProgramCache]: Analyzing trace with hash 743390522, now seen corresponding path program 2 times [2023-11-06 22:20:25,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:25,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831114426] [2023-11-06 22:20:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:25,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:25,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:25,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326929518] [2023-11-06 22:20:25,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:20:25,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:25,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:25,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:25,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:20:26,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:20:26,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:20:26,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:20:26,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-06 22:20:26,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:26,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:26,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831114426] [2023-11-06 22:20:26,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:26,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326929518] [2023-11-06 22:20:26,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326929518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:26,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:26,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:20:26,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366095543] [2023-11-06 22:20:26,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:20:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:26,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:20:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:20:26,168 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:20:26,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:26,318 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2023-11-06 22:20:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:20:26,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 60 [2023-11-06 22:20:26,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:26,319 INFO L225 Difference]: With dead ends: 51 [2023-11-06 22:20:26,319 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 22:20:26,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:20:26,321 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:26,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 90 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 22:20:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 22:20:26,322 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) [2023-11-06 22:20:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:20:26,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2023-11-06 22:20:26,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:26,322 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:20:26,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:20:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:20:26,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 22:20:26,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:20:26,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:20:26,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:26,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 22:20:27,463 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 22:20:27,463 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-11-06 22:20:27,463 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2)) [2023-11-06 22:20:27,463 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-11-06 22:20:27,464 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-11-06 22:20:27,464 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-06 22:20:27,464 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 22:20:27,464 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 20 49) the Hoare annotation is: true [2023-11-06 22:20:27,464 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_main_~b~0#1| 2)) (.cse2 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| 0))) (or (let ((.cse0 (+ |ULTIMATE.start_main_~y~0#1| 1))) (and (<= 1 (mod .cse0 2)) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 0 .cse0))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) .cse3 (= 1 (div |ULTIMATE.start_main_~b~0#1| 2)) (not (= (mod |ULTIMATE.start_main_~b~0#1| 2) 1))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2023-11-06 22:20:27,464 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 22:20:27,465 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0) (= |ULTIMATE.start_main_~z~0#1| .cse0))) [2023-11-06 22:20:27,465 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 22:20:27,465 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-11-06 22:20:27,465 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2023-11-06 22:20:27,465 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2023-11-06 22:20:27,465 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_main_~b~0#1| 2)) (.cse2 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| 0))) (or (let ((.cse0 (+ |ULTIMATE.start_main_~y~0#1| 1))) (and (<= 1 (mod .cse0 2)) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 0 .cse0))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) .cse3 (= 1 (div |ULTIMATE.start_main_~b~0#1| 2)) (not (= (mod |ULTIMATE.start_main_~b~0#1| 2) 1))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2023-11-06 22:20:27,465 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2023-11-06 22:20:27,466 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2023-11-06 22:20:27,466 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 11) the Hoare annotation is: true [2023-11-06 22:20:27,466 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2023-11-06 22:20:27,466 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2023-11-06 22:20:27,466 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2023-11-06 22:20:27,466 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2023-11-06 22:20:27,466 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2023-11-06 22:20:27,466 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2023-11-06 22:20:27,467 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 18) the Hoare annotation is: true [2023-11-06 22:20:27,467 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-11-06 22:20:27,472 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-06 22:20:27,474 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:20:27,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:20:27 BoogieIcfgContainer [2023-11-06 22:20:27,496 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:20:27,497 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:20:27,497 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:20:27,497 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:20:27,498 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:15" (3/4) ... [2023-11-06 22:20:27,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:20:27,505 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-06 22:20:27,505 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-06 22:20:27,512 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-06 22:20:27,512 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:20:27,513 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:20:27,513 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:20:27,588 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:20:27,589 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:20:27,589 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:20:27,590 INFO L158 Benchmark]: Toolchain (without parser) took 12871.49ms. Allocated memory was 157.3MB in the beginning and 209.7MB in the end (delta: 52.4MB). Free memory was 117.4MB in the beginning and 129.5MB in the end (delta: -12.1MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2023-11-06 22:20:27,590 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:20:27,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.18ms. Allocated memory is still 157.3MB. Free memory was 117.0MB in the beginning and 120.3MB in the end (delta: -3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:20:27,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.23ms. Allocated memory is still 157.3MB. Free memory was 120.3MB in the beginning and 119.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:20:27,591 INFO L158 Benchmark]: Boogie Preprocessor took 23.53ms. Allocated memory is still 157.3MB. Free memory was 119.1MB in the beginning and 117.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:20:27,592 INFO L158 Benchmark]: RCFGBuilder took 309.59ms. Allocated memory is still 157.3MB. Free memory was 117.9MB in the beginning and 107.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:20:27,594 INFO L158 Benchmark]: TraceAbstraction took 12041.62ms. Allocated memory was 157.3MB in the beginning and 209.7MB in the end (delta: 52.4MB). Free memory was 106.6MB in the beginning and 132.6MB in the end (delta: -26.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2023-11-06 22:20:27,595 INFO L158 Benchmark]: Witness Printer took 92.67ms. Allocated memory is still 209.7MB. Free memory was 132.6MB in the beginning and 129.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:20:27,598 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.18ms. Allocated memory is still 157.3MB. Free memory was 117.0MB in the beginning and 120.3MB in the end (delta: -3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.23ms. Allocated memory is still 157.3MB. Free memory was 120.3MB in the beginning and 119.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.53ms. Allocated memory is still 157.3MB. Free memory was 119.1MB in the beginning and 117.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 309.59ms. Allocated memory is still 157.3MB. Free memory was 117.9MB in the beginning and 107.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12041.62ms. Allocated memory was 157.3MB in the beginning and 209.7MB in the end (delta: 52.4MB). Free memory was 106.6MB in the beginning and 132.6MB in the end (delta: -26.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * Witness Printer took 92.67ms. Allocated memory is still 209.7MB. Free memory was 132.6MB in the beginning and 129.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 15]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.9s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 684 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 546 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 567 IncrementalHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 138 mSDtfsCounter, 567 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 412 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=4, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 27 PreInvPairs, 37 NumberOfFragments, 172 HoareAnnotationTreeSize, 27 FomulaSimplifications, 89 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 121 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 391 ConstructedInterpolants, 2 QuantifiedInterpolants, 1638 SizeOfPredicates, 19 NumberOfNonLiveVariables, 660 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 255/274 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: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((1 <= ((y + 1) % 2)) && (b <= 2)) && (1 <= b)) && ((z + (x * y)) == (a * b))) && (y <= 1)) && (0 <= (y + 1))) || (((((y == 1) && (x == (2 * a))) && (z == 0)) && (1 == (b / 2))) && !(((b % 2) == 1)))) || (((((b == y) && (b <= 2)) && (1 <= b)) && (z == 0)) && (a == x))) RESULT: Ultimate proved your program to be correct! [2023-11-06 22:20:27,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39495a08-6182-4d42-8f4b-43c5d3ae3038/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE