./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:48,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:48,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:07:48,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:48,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:48,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:48,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:48,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:48,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:48,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:48,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:48,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:48,809 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:48,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:48,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:07:48,811 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:48,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:48,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:48,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:48,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:07:48,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:48,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:07:48,815 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:48,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:07:48,816 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:48,817 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:48,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:48,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:48,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:48,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:48,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:48,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:07:48,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:07:48,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:07:48,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:48,822 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:07:48,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:48,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:48,823 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:48,824 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_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 [2023-11-12 02:07:49,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:49,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:49,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:49,160 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:49,161 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:49,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2023-11-12 02:07:52,163 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:52,498 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:52,498 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2023-11-12 02:07:52,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/data/169e9bd98/6b8a541bfbc7411fa8f257ac02e19265/FLAG3d488eab3 [2023-11-12 02:07:52,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/data/169e9bd98/6b8a541bfbc7411fa8f257ac02e19265 [2023-11-12 02:07:52,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:52,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:52,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:52,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:52,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:52,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0825cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52, skipping insertion in model container [2023-11-12 02:07:52,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,575 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:52,765 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_18d9122f-088f-4f41-98e8-8acd8f88cf55/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2023-11-12 02:07:52,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:52,798 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:07:52,808 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_18d9122f-088f-4f41-98e8-8acd8f88cf55/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2023-11-12 02:07:52,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:52,832 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:07:52,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52 WrapperNode [2023-11-12 02:07:52,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:52,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:52,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:07:52,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:07:52,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,871 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2023-11-12 02:07:52,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:52,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:07:52,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:07:52,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:07:52,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,895 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:07:52,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:07:52,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:07:52,896 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:07:52,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:52,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:52,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:07:52,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:07:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:07:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:07:52,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:07:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:07:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:07:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:07:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 02:07:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 02:07:53,034 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:07:53,036 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:07:53,206 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:07:53,214 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:07:53,214 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:07:53,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:53 BoogieIcfgContainer [2023-11-12 02:07:53,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:07:53,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:07:53,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:07:53,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:07:53,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:52" (1/3) ... [2023-11-12 02:07:53,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62acb094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:53, skipping insertion in model container [2023-11-12 02:07:53,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52" (2/3) ... [2023-11-12 02:07:53,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62acb094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:53, skipping insertion in model container [2023-11-12 02:07:53,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:53" (3/3) ... [2023-11-12 02:07:53,227 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound20.c [2023-11-12 02:07:53,246 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:07:53,246 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:07:53,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:53,302 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b6921d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:53,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:07:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 02:07:53,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 02:07:53,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:53,317 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:53,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:53,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:53,323 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2023-11-12 02:07:53,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:53,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793455151] [2023-11-12 02:07:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:53,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:53,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:53,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926233758] [2023-11-12 02:07:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:53,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:53,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:53,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:53,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:07:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:53,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 02:07:53,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 02:07:53,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:53,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793455151] [2023-11-12 02:07:53,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:53,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926233758] [2023-11-12 02:07:53,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926233758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:53,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:53,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:07:53,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895862585] [2023-11-12 02:07:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:53,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:53,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:53,840 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 02:07:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:54,033 INFO L93 Difference]: Finished difference Result 77 states and 133 transitions. [2023-11-12 02:07:54,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:07:54,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-11-12 02:07:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:54,046 INFO L225 Difference]: With dead ends: 77 [2023-11-12 02:07:54,046 INFO L226 Difference]: Without dead ends: 42 [2023-11-12 02:07:54,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:07:54,055 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:54,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 166 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:54,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-12 02:07:54,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-11-12 02:07:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 02:07:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2023-11-12 02:07:54,124 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2023-11-12 02:07:54,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:54,125 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2023-11-12 02:07:54,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 02:07:54,125 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2023-11-12 02:07:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 02:07:54,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:54,128 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:54,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:54,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:07:54,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:54,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:54,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2023-11-12 02:07:54,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:54,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946437021] [2023-11-12 02:07:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:54,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:54,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:54,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235164370] [2023-11-12 02:07:54,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:54,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:54,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:54,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:54,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:07:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:54,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 02:07:54,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 02:07:54,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:54,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:54,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946437021] [2023-11-12 02:07:54,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:54,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235164370] [2023-11-12 02:07:54,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235164370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:54,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-12 02:07:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477038988] [2023-11-12 02:07:54,888 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:54,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:54,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:07:54,892 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:07:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:55,095 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2023-11-12 02:07:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:07:55,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2023-11-12 02:07:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:55,105 INFO L225 Difference]: With dead ends: 66 [2023-11-12 02:07:55,105 INFO L226 Difference]: Without dead ends: 64 [2023-11-12 02:07:55,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:07:55,109 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:55,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 128 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-12 02:07:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2023-11-12 02:07:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-12 02:07:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2023-11-12 02:07:55,157 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2023-11-12 02:07:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:55,159 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2023-11-12 02:07:55,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:07:55,161 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2023-11-12 02:07:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:07:55,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:55,164 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:55,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:55,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-12 02:07:55,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:55,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:55,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2023-11-12 02:07:55,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:55,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910034838] [2023-11-12 02:07:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:55,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:55,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:55,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516852075] [2023-11-12 02:07:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:55,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:55,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:55,399 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:55,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:07:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:55,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-12 02:07:55,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-12 02:07:55,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 02:07:55,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:55,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910034838] [2023-11-12 02:07:55,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:55,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516852075] [2023-11-12 02:07:55,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516852075] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:55,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:55,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-12 02:07:55,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044709679] [2023-11-12 02:07:55,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:55,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:55,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:55,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:55,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:07:55,922 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-12 02:07:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:55,999 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2023-11-12 02:07:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-11-12 02:07:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:56,002 INFO L225 Difference]: With dead ends: 64 [2023-11-12 02:07:56,003 INFO L226 Difference]: Without dead ends: 60 [2023-11-12 02:07:56,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:07:56,005 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:56,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:56,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-12 02:07:56,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-12 02:07:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:07:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2023-11-12 02:07:56,024 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2023-11-12 02:07:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:56,025 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2023-11-12 02:07:56,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-12 02:07:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2023-11-12 02:07:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-12 02:07:56,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:56,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:56,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 02:07:56,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-12 02:07:56,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:56,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2023-11-12 02:07:56,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:56,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177066926] [2023-11-12 02:07:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:56,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:56,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:56,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817835970] [2023-11-12 02:07:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:56,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:56,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:56,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:56,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:07:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:56,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:07:56,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-12 02:07:56,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:56,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:56,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177066926] [2023-11-12 02:07:56,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:56,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817835970] [2023-11-12 02:07:56,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817835970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:56,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:56,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:07:56,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516211] [2023-11-12 02:07:56,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:56,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:56,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:56,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:56,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:56,419 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:07:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:56,469 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2023-11-12 02:07:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:56,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2023-11-12 02:07:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:56,472 INFO L225 Difference]: With dead ends: 66 [2023-11-12 02:07:56,472 INFO L226 Difference]: Without dead ends: 64 [2023-11-12 02:07:56,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:56,474 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:56,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 131 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:56,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-12 02:07:56,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-12 02:07:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:07:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2023-11-12 02:07:56,496 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2023-11-12 02:07:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:56,498 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2023-11-12 02:07:56,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:07:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2023-11-12 02:07:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-12 02:07:56,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:56,503 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:56,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:56,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:56,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:56,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:56,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2023-11-12 02:07:56,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:56,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515737157] [2023-11-12 02:07:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:56,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:56,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:56,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554161257] [2023-11-12 02:07:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:56,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:56,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:56,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:56,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:07:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:56,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:07:56,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-12 02:07:56,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:57,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515737157] [2023-11-12 02:07:57,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554161257] [2023-11-12 02:07:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554161257] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:57,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:57,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-12 02:07:57,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72524109] [2023-11-12 02:07:57,193 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:57,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:07:57,201 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:07:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:57,382 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2023-11-12 02:07:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:07:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-11-12 02:07:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:57,385 INFO L225 Difference]: With dead ends: 80 [2023-11-12 02:07:57,385 INFO L226 Difference]: Without dead ends: 78 [2023-11-12 02:07:57,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:07:57,387 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:57,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 136 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-12 02:07:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2023-11-12 02:07:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-12 02:07:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2023-11-12 02:07:57,412 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2023-11-12 02:07:57,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:57,413 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2023-11-12 02:07:57,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:07:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2023-11-12 02:07:57,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-12 02:07:57,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:57,416 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:57,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:57,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:57,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:57,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2023-11-12 02:07:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:57,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207347477] [2023-11-12 02:07:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:57,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:57,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484639303] [2023-11-12 02:07:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:57,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:57,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:57,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:57,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:07:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:57,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:07:57,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-12 02:07:57,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-12 02:07:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207347477] [2023-11-12 02:07:57,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484639303] [2023-11-12 02:07:57,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484639303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:57,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:57,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-11-12 02:07:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309176149] [2023-11-12 02:07:57,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:57,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:07:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:07:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:07:57,995 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-12 02:07:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:58,125 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2023-11-12 02:07:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:07:58,126 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 50 [2023-11-12 02:07:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:58,128 INFO L225 Difference]: With dead ends: 84 [2023-11-12 02:07:58,128 INFO L226 Difference]: Without dead ends: 80 [2023-11-12 02:07:58,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:07:58,130 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 18 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:58,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 97 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:58,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-12 02:07:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-12 02:07:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-12 02:07:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2023-11-12 02:07:58,154 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2023-11-12 02:07:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:58,155 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2023-11-12 02:07:58,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-12 02:07:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2023-11-12 02:07:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 02:07:58,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:58,157 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:58,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:58,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:58,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:58,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:58,366 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 1 times [2023-11-12 02:07:58,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:58,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150523648] [2023-11-12 02:07:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:58,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:58,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:58,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478325977] [2023-11-12 02:07:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:58,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:58,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:58,388 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:58,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:07:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:58,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-12 02:07:58,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-12 02:07:58,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-12 02:07:58,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150523648] [2023-11-12 02:07:58,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478325977] [2023-11-12 02:07:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478325977] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:58,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:58,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-11-12 02:07:58,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565518304] [2023-11-12 02:07:58,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:58,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:07:58,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:58,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:07:58,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:07:58,952 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-12 02:07:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:59,549 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2023-11-12 02:07:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:07:59,550 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 52 [2023-11-12 02:07:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:59,552 INFO L225 Difference]: With dead ends: 106 [2023-11-12 02:07:59,552 INFO L226 Difference]: Without dead ends: 99 [2023-11-12 02:07:59,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:07:59,553 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:59,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 263 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:07:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-12 02:07:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2023-11-12 02:07:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:07:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2023-11-12 02:07:59,587 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 52 [2023-11-12 02:07:59,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:59,587 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2023-11-12 02:07:59,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-12 02:07:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2023-11-12 02:07:59,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:07:59,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:59,590 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:59,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:59,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:59,796 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:59,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:59,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2023-11-12 02:07:59,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:59,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058550963] [2023-11-12 02:07:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:59,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:59,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:59,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030443126] [2023-11-12 02:07:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:59,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:59,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:59,817 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:59,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:07:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:59,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-12 02:07:59,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-12 02:08:00,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-12 02:08:00,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:00,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058550963] [2023-11-12 02:08:00,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:00,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030443126] [2023-11-12 02:08:00,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030443126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:00,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:00,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-11-12 02:08:00,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041186170] [2023-11-12 02:08:00,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:00,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 02:08:00,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:00,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 02:08:00,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:08:00,455 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-12 02:08:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:00,900 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2023-11-12 02:08:00,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:08:00,901 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 65 [2023-11-12 02:08:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:00,901 INFO L225 Difference]: With dead ends: 99 [2023-11-12 02:08:00,901 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 02:08:00,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:08:00,903 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 34 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:00,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 328 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:08:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 02:08:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 02:08:00,905 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) [2023-11-12 02:08:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 02:08:00,905 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2023-11-12 02:08:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:00,905 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 02:08:00,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-12 02:08:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 02:08:00,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 02:08:00,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 02:08:00,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:01,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:01,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 02:08:37,220 WARN L293 SmtUtils]: Spent 35.85s on a formula simplification. DAG size of input: 69 DAG size of output: 42 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-12 02:08:45,265 WARN L293 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 65 DAG size of output: 42 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-12 02:08:51,709 WARN L293 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 69 DAG size of output: 42 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-12 02:08:52,474 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse8 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse9 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (<= 0 |ULTIMATE.start_main_~y~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 20)) (.cse7 (= (+ .cse8 .cse9) |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 (= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1| .cse2) (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (= |ULTIMATE.start_main_~r~0#1| 0) .cse3 .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse5) (and .cse0 (= (+ .cse6 .cse2) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse7 .cse5) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse1 (= (+ .cse8 |ULTIMATE.start_main_~b~0#1| .cse9) (+ |ULTIMATE.start_main_~a~0#1| .cse6 .cse2)) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3 .cse4 .cse7)))) [2023-11-12 02:08:52,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 02:08:52,475 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) [2023-11-12 02:08:52,475 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) [2023-11-12 02:08:52,475 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse8 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse9 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (<= 0 |ULTIMATE.start_main_~y~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 20)) (.cse7 (= (+ .cse8 .cse9) |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 (= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1| .cse2) (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (= |ULTIMATE.start_main_~r~0#1| 0) .cse3 .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse5) (and .cse0 (= (+ .cse6 .cse2) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse7 .cse5) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse1 (= (+ .cse8 |ULTIMATE.start_main_~b~0#1| .cse9) (+ |ULTIMATE.start_main_~a~0#1| .cse6 .cse2)) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3 .cse4 .cse7)))) [2023-11-12 02:08:52,475 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 02:08:52,475 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 18 59) no Hoare annotation was computed. [2023-11-12 02:08:52,476 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2023-11-12 02:08:52,476 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2023-11-12 02:08:52,476 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2023-11-12 02:08:52,476 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-12 02:08:52,476 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-12 02:08:52,477 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-11-12 02:08:52,477 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2023-11-12 02:08:52,477 INFO L902 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2023-11-12 02:08:52,477 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20)) [2023-11-12 02:08:52,478 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (<= 0 |ULTIMATE.start_main_~y~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 20))) (or (and .cse0 .cse1 (= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1| .cse2) (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (= |ULTIMATE.start_main_~r~0#1| 0) .cse3 .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse5) (and .cse0 (= (+ .cse6 .cse2) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse5) (let ((.cse7 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse1 (= (+ .cse7 |ULTIMATE.start_main_~b~0#1| .cse8) (+ |ULTIMATE.start_main_~a~0#1| .cse6 .cse2)) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3 .cse4 (= (+ .cse7 .cse8) |ULTIMATE.start_main_~a~0#1|))))) [2023-11-12 02:08:52,478 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2023-11-12 02:08:52,478 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-11-12 02:08:52,478 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2023-11-12 02:08:52,478 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2023-11-12 02:08:52,479 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 20) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2023-11-12 02:08:52,479 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-11-12 02:08:52,479 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-11-12 02:08:52,479 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-11-12 02:08:52,479 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-11-12 02:08:52,479 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-11-12 02:08:52,479 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-11-12 02:08:52,480 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-11-12 02:08:52,480 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-11-12 02:08:52,480 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-11-12 02:08:52,480 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-11-12 02:08:52,484 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:52,486 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:08:52,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:08:52 BoogieIcfgContainer [2023-11-12 02:08:52,500 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:08:52,501 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:08:52,501 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:08:52,501 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:08:52,501 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:53" (3/4) ... [2023-11-12 02:08:52,504 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:08:52,508 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-12 02:08:52,508 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-12 02:08:52,513 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-12 02:08:52,513 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:08:52,513 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:08:52,514 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:08:52,606 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:08:52,606 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:08:52,607 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:08:52,607 INFO L158 Benchmark]: Toolchain (without parser) took 60070.52ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 128.8MB in the beginning and 102.8MB in the end (delta: 26.0MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. [2023-11-12 02:08:52,608 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 68.7MB in the beginning and 68.6MB in the end (delta: 75.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:08:52,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.52ms. Allocated memory is still 157.3MB. Free memory was 128.6MB in the beginning and 117.5MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:08:52,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.49ms. Allocated memory is still 157.3MB. Free memory was 117.5MB in the beginning and 116.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:08:52,609 INFO L158 Benchmark]: Boogie Preprocessor took 22.80ms. Allocated memory is still 157.3MB. Free memory was 116.0MB in the beginning and 114.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:08:52,609 INFO L158 Benchmark]: RCFGBuilder took 321.12ms. Allocated memory is still 157.3MB. Free memory was 114.8MB in the beginning and 103.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:08:52,610 INFO L158 Benchmark]: TraceAbstraction took 59280.41ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 102.8MB in the beginning and 108.0MB in the end (delta: -5.2MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. [2023-11-12 02:08:52,610 INFO L158 Benchmark]: Witness Printer took 106.13ms. Allocated memory is still 190.8MB. Free memory was 108.0MB in the beginning and 102.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:08:52,613 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 68.7MB in the beginning and 68.6MB in the end (delta: 75.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.52ms. Allocated memory is still 157.3MB. Free memory was 128.6MB in the beginning and 117.5MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.49ms. Allocated memory is still 157.3MB. Free memory was 117.5MB in the beginning and 116.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.80ms. Allocated memory is still 157.3MB. Free memory was 116.0MB in the beginning and 114.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 321.12ms. Allocated memory is still 157.3MB. Free memory was 114.8MB in the beginning and 103.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 59280.41ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 102.8MB in the beginning and 108.0MB in the end (delta: -5.2MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. * Witness Printer took 106.13ms. Allocated memory is still 190.8MB. Free memory was 108.0MB in the beginning and 102.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.2s, OverallIterations: 8, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 51.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 1369 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1118 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 814 IncrementalHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 251 mSDtfsCounter, 814 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 498 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=7, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 61 PreInvPairs, 106 NumberOfFragments, 534 HoareAnnotationTreeSize, 61 FomulaSimplifications, 1217 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 14 FomulaSimplificationsInter, 1627 FormulaSimplificationTreeSizeReductionInter, 51.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 361 NumberOfCodeBlocks, 361 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 555 ConstructedInterpolants, 0 QuantifiedInterpolants, 1782 SizeOfPredicates, 32 NumberOfNonLiveVariables, 927 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 590/642 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: 35]: Loop Invariant Derived loop invariant: (((((((p * s) == ((q * r) + 1)) && (0 <= y)) && ((((r * y) + b) + (p * x)) == ((a + (s * y)) + (q * x)))) && (1 <= x)) && (y <= 20)) && (((r * y) + (p * x)) == a)) RESULT: Ultimate proved your program to be correct! [2023-11-12 02:08:52,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d9122f-088f-4f41-98e8-8acd8f88cf55/bin/uautomizer-verify-uTZkv6EMXl/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