./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu --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 0c05b3481ca1dc1c692f840aeed292bcc36fc4d3f2b591c1dabda29806aee6c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:47,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:48,034 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:36:48,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:48,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:48,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:48,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:48,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:48,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:48,078 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:48,079 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:48,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:48,080 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:48,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:48,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:48,082 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:48,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:48,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:48,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:48,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:48,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:48,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:48,085 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:48,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:48,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:48,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:48,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:48,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:48,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:48,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:48,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:48,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:48,089 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:48,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:48,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:48,090 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:48,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:48,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:48,091 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:48,091 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_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c05b3481ca1dc1c692f840aeed292bcc36fc4d3f2b591c1dabda29806aee6c8 [2023-11-19 07:36:48,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:48,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:48,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:48,406 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:48,407 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:48,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2023-11-19 07:36:51,719 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:52,004 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:52,005 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2023-11-19 07:36:52,024 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/data/e03cde498/d165cda543564089a57cf6bd020361ec/FLAGa604ee36a [2023-11-19 07:36:52,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/data/e03cde498/d165cda543564089a57cf6bd020361ec [2023-11-19 07:36:52,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:52,055 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:52,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:52,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:52,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:52,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3709b9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52, skipping insertion in model container [2023-11-19 07:36:52,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,136 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:52,294 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_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i[916,929] [2023-11-19 07:36:52,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:52,412 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:52,425 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_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i[916,929] [2023-11-19 07:36:52,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:52,543 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:52,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52 WrapperNode [2023-11-19 07:36:52,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:52,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:52,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:52,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:52,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,635 INFO L138 Inliner]: procedures = 26, calls = 82, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 397 [2023-11-19 07:36:52,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:52,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:52,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:52,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:52,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:52,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:52,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:52,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:52,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2023-11-19 07:36:52,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:52,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:52,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:52,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:52,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:52,859 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:36:52,859 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:36:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:53,044 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:53,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:53,950 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:53,967 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:53,968 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:36:53,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:53 BoogieIcfgContainer [2023-11-19 07:36:53,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:53,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:53,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:53,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:53,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:52" (1/3) ... [2023-11-19 07:36:53,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f510279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:53, skipping insertion in model container [2023-11-19 07:36:53,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (2/3) ... [2023-11-19 07:36:53,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f510279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:53, skipping insertion in model container [2023-11-19 07:36:53,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:53" (3/3) ... [2023-11-19 07:36:53,993 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2023-11-19 07:36:54,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:54,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:36:54,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:54,090 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;@4f8da5a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:54,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:36:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 107 states have internal predecessors, (155), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-19 07:36:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-11-19 07:36:54,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:54,129 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:54,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:54,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash -598112317, now seen corresponding path program 1 times [2023-11-19 07:36:54,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:54,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380947737] [2023-11-19 07:36:54,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:54,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:54,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380947737] [2023-11-19 07:36:54,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:36:54,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393130159] [2023-11-19 07:36:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:54,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:54,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:54,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:54,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:36:55,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2023-11-19 07:36:55,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:55,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393130159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:55,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:55,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:55,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676516920] [2023-11-19 07:36:55,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:55,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:36:55,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:55,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:36:55,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:55,173 INFO L87 Difference]: Start difference. First operand has 178 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 107 states have internal predecessors, (155), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-11-19 07:36:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:55,238 INFO L93 Difference]: Finished difference Result 349 states and 649 transitions. [2023-11-19 07:36:55,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:36:55,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) Word has length 421 [2023-11-19 07:36:55,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:55,260 INFO L225 Difference]: With dead ends: 349 [2023-11-19 07:36:55,260 INFO L226 Difference]: Without dead ends: 174 [2023-11-19 07:36:55,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:55,271 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:55,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-19 07:36:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-11-19 07:36:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 103 states have (on average 1.4174757281553398) internal successors, (146), 103 states have internal predecessors, (146), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-19 07:36:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 284 transitions. [2023-11-19 07:36:55,355 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 284 transitions. Word has length 421 [2023-11-19 07:36:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:55,356 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 284 transitions. [2023-11-19 07:36:55,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-11-19 07:36:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 284 transitions. [2023-11-19 07:36:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-11-19 07:36:55,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:55,371 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:55,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:55,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:55,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:55,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1945411457, now seen corresponding path program 1 times [2023-11-19 07:36:55,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:55,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405796714] [2023-11-19 07:36:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:55,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:55,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:55,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470235614] [2023-11-19 07:36:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:55,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:55,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:55,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:55,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:36:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:56,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:36:56,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-11-19 07:36:56,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:56,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:56,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405796714] [2023-11-19 07:36:56,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470235614] [2023-11-19 07:36:56,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470235614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:56,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:56,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:56,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430234650] [2023-11-19 07:36:56,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:56,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:56,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:56,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:56,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:56,249 INFO L87 Difference]: Start difference. First operand 174 states and 284 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-19 07:36:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:56,318 INFO L93 Difference]: Finished difference Result 345 states and 565 transitions. [2023-11-19 07:36:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:56,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2023-11-19 07:36:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:56,327 INFO L225 Difference]: With dead ends: 345 [2023-11-19 07:36:56,328 INFO L226 Difference]: Without dead ends: 174 [2023-11-19 07:36:56,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:56,330 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 31 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:56,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 529 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-19 07:36:56,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-11-19 07:36:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 103 states have internal predecessors, (145), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-19 07:36:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 283 transitions. [2023-11-19 07:36:56,376 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 283 transitions. Word has length 421 [2023-11-19 07:36:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:56,380 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 283 transitions. [2023-11-19 07:36:56,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-19 07:36:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 283 transitions. [2023-11-19 07:36:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-11-19 07:36:56,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:56,398 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:56,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:36:56,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:36:56,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:56,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash 256467715, now seen corresponding path program 1 times [2023-11-19 07:36:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:56,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111907059] [2023-11-19 07:36:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:56,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:56,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202329878] [2023-11-19 07:36:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:56,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:56,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:56,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:56,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:36:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:57,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:36:57,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4578 proven. 81 refuted. 0 times theorem prover too weak. 4725 trivial. 0 not checked. [2023-11-19 07:36:57,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 123 proven. 81 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-11-19 07:36:57,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111907059] [2023-11-19 07:36:57,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202329878] [2023-11-19 07:36:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202329878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:57,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:36:57,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:36:57,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573895475] [2023-11-19 07:36:57,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:57,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:57,910 INFO L87 Difference]: Start difference. First operand 174 states and 283 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-19 07:36:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:58,566 INFO L93 Difference]: Finished difference Result 353 states and 570 transitions. [2023-11-19 07:36:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:36:58,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 421 [2023-11-19 07:36:58,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:58,579 INFO L225 Difference]: With dead ends: 353 [2023-11-19 07:36:58,580 INFO L226 Difference]: Without dead ends: 182 [2023-11-19 07:36:58,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 834 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:36:58,585 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 390 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:58,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 483 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:36:58,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-19 07:36:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2023-11-19 07:36:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 106 states have internal predecessors, (146), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-19 07:36:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 284 transitions. [2023-11-19 07:36:58,666 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 284 transitions. Word has length 421 [2023-11-19 07:36:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:58,669 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 284 transitions. [2023-11-19 07:36:58,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-19 07:36:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 284 transitions. [2023-11-19 07:36:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-11-19 07:36:58,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:58,676 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:58,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:58,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:36:58,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:58,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2115271547, now seen corresponding path program 1 times [2023-11-19 07:36:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405488649] [2023-11-19 07:36:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:58,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:58,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176789694] [2023-11-19 07:36:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:58,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:58,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:59,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:36:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:59,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:36:59,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4454 proven. 75 refuted. 0 times theorem prover too weak. 4855 trivial. 0 not checked. [2023-11-19 07:37:00,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 129 proven. 75 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-11-19 07:37:01,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:01,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405488649] [2023-11-19 07:37:01,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:01,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176789694] [2023-11-19 07:37:01,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176789694] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:01,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:37:01,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-19 07:37:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232444391] [2023-11-19 07:37:01,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:01,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:37:01,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:37:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:37:01,174 INFO L87 Difference]: Start difference. First operand 178 states and 284 transitions. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 4 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2023-11-19 07:37:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:02,643 INFO L93 Difference]: Finished difference Result 769 states and 1216 transitions. [2023-11-19 07:37:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:37:02,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 4 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) Word has length 421 [2023-11-19 07:37:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:02,651 INFO L225 Difference]: With dead ends: 769 [2023-11-19 07:37:02,651 INFO L226 Difference]: Without dead ends: 594 [2023-11-19 07:37:02,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:37:02,653 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 660 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:02,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1242 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:37:02,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-11-19 07:37:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 466. [2023-11-19 07:37:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 277 states have (on average 1.3574007220216606) internal successors, (376), 278 states have internal predecessors, (376), 181 states have call successors, (181), 7 states have call predecessors, (181), 7 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) [2023-11-19 07:37:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 738 transitions. [2023-11-19 07:37:02,764 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 738 transitions. Word has length 421 [2023-11-19 07:37:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:02,765 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 738 transitions. [2023-11-19 07:37:02,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 4 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2023-11-19 07:37:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 738 transitions. [2023-11-19 07:37:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-11-19 07:37:02,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:02,773 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:02,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:02,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:02,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:02,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:02,984 INFO L85 PathProgramCache]: Analyzing trace with hash 374257415, now seen corresponding path program 1 times [2023-11-19 07:37:02,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:02,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293179060] [2023-11-19 07:37:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:02,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:03,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:03,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149526407] [2023-11-19 07:37:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:03,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:03,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:03,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:03,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:37:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:03,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:37:03,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-11-19 07:37:03,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:03,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:03,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293179060] [2023-11-19 07:37:03,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:03,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149526407] [2023-11-19 07:37:03,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149526407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:03,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:03,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:03,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809470053] [2023-11-19 07:37:03,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:03,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:03,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:03,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:03,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:03,497 INFO L87 Difference]: Start difference. First operand 466 states and 738 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-19 07:37:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:04,024 INFO L93 Difference]: Finished difference Result 1389 states and 2202 transitions. [2023-11-19 07:37:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:37:04,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2023-11-19 07:37:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:04,036 INFO L225 Difference]: With dead ends: 1389 [2023-11-19 07:37:04,036 INFO L226 Difference]: Without dead ends: 926 [2023-11-19 07:37:04,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:04,040 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 298 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:04,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 854 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:37:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-19 07:37:04,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 472. [2023-11-19 07:37:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 283 states have (on average 1.3498233215547704) internal successors, (382), 284 states have internal predecessors, (382), 181 states have call successors, (181), 7 states have call predecessors, (181), 7 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) [2023-11-19 07:37:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 744 transitions. [2023-11-19 07:37:04,254 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 744 transitions. Word has length 421 [2023-11-19 07:37:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:04,256 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 744 transitions. [2023-11-19 07:37:04,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-19 07:37:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 744 transitions. [2023-11-19 07:37:04,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-11-19 07:37:04,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:04,260 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:04,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:04,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:04,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:04,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:04,476 INFO L85 PathProgramCache]: Analyzing trace with hash -905606263, now seen corresponding path program 1 times [2023-11-19 07:37:04,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:04,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501115779] [2023-11-19 07:37:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:04,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:04,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:04,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461709533] [2023-11-19 07:37:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:04,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:04,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:04,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:04,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:37:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:04,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:37:04,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-11-19 07:37:05,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:05,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:05,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501115779] [2023-11-19 07:37:05,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:05,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461709533] [2023-11-19 07:37:05,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461709533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:05,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:05,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:05,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244860724] [2023-11-19 07:37:05,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:05,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:05,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:05,509 INFO L87 Difference]: Start difference. First operand 472 states and 744 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-19 07:37:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:06,124 INFO L93 Difference]: Finished difference Result 1395 states and 2205 transitions. [2023-11-19 07:37:06,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:37:06,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2023-11-19 07:37:06,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:06,134 INFO L225 Difference]: With dead ends: 1395 [2023-11-19 07:37:06,134 INFO L226 Difference]: Without dead ends: 926 [2023-11-19 07:37:06,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:06,137 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 216 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:06,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 789 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:37:06,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-19 07:37:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 535. [2023-11-19 07:37:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 346 states have (on average 1.3815028901734103) internal successors, (478), 347 states have internal predecessors, (478), 181 states have call successors, (181), 7 states have call predecessors, (181), 7 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) [2023-11-19 07:37:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 840 transitions. [2023-11-19 07:37:06,303 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 840 transitions. Word has length 421 [2023-11-19 07:37:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:06,304 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 840 transitions. [2023-11-19 07:37:06,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-19 07:37:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 840 transitions. [2023-11-19 07:37:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-11-19 07:37:06,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:06,309 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:06,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:06,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:06,522 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:06,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1214090487, now seen corresponding path program 1 times [2023-11-19 07:37:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:06,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112130118] [2023-11-19 07:37:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:06,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:06,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11340892] [2023-11-19 07:37:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:06,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:06,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:06,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:06,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:37:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:06,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:37:06,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-11-19 07:37:06,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:06,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112130118] [2023-11-19 07:37:06,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:06,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11340892] [2023-11-19 07:37:06,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11340892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:06,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:06,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:06,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683320379] [2023-11-19 07:37:06,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:06,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:06,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:06,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:06,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:06,981 INFO L87 Difference]: Start difference. First operand 535 states and 840 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-19 07:37:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:07,250 INFO L93 Difference]: Finished difference Result 1458 states and 2289 transitions. [2023-11-19 07:37:07,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:07,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 421 [2023-11-19 07:37:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:07,263 INFO L225 Difference]: With dead ends: 1458 [2023-11-19 07:37:07,263 INFO L226 Difference]: Without dead ends: 926 [2023-11-19 07:37:07,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:07,269 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 287 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:07,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 798 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:37:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-19 07:37:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 535. [2023-11-19 07:37:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 346 states have (on average 1.3728323699421965) internal successors, (475), 347 states have internal predecessors, (475), 181 states have call successors, (181), 7 states have call predecessors, (181), 7 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) [2023-11-19 07:37:07,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 837 transitions. [2023-11-19 07:37:07,480 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 837 transitions. Word has length 421 [2023-11-19 07:37:07,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:07,481 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 837 transitions. [2023-11-19 07:37:07,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-19 07:37:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 837 transitions. [2023-11-19 07:37:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-11-19 07:37:07,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:07,486 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:07,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:07,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:07,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:07,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:07,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1315907216, now seen corresponding path program 1 times [2023-11-19 07:37:07,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:07,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209703858] [2023-11-19 07:37:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:07,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:07,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:07,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846910708] [2023-11-19 07:37:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:07,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:07,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:07,768 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:07,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:37:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:08,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:37:08,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 3562 proven. 129 refuted. 0 times theorem prover too weak. 5693 trivial. 0 not checked. [2023-11-19 07:37:10,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:14,933 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse12 (mod c_~var_1_37~0 4294967296))) (let ((.cse2 (mod c_~var_1_53~0 4294967296)) (.cse11 (* (- 1) .cse12))) (let ((.cse3 (+ (* (div (+ .cse2 (- 4294967233) .cse11) 4294967296) 4294967296) 8589934592 .cse12)) (.cse4 (mod (+ c_~var_1_53~0 63 (* c_~var_1_37~0 4294967295)) 4294967296)) (.cse7 (+ (* (div (+ .cse2 (- 8589934529) .cse11) 4294967296) 4294967296) 12884901888 .cse12))) (and (forall ((v_y_6 Int) (v_z_7 Int) (v_y_7 Int)) (let ((.cse0 (+ (* v_y_6 4294967296) (* 4294967295 v_z_7) (* 18446744069414584320 v_y_7))) (.cse1 (* v_y_7 4294967296))) (or (< 127 .cse0) (< .cse0 63) (< 4294967295 (+ .cse1 .cse2 v_z_7)) (< .cse3 (+ .cse2 v_z_7)) (< (+ v_z_7 .cse4) 4294967296) (< (+ .cse1 v_z_7) 0)))) (forall ((v_y_6 Int) (v_y_15 Int) (v_z_15 Int) (v_y_11 Int)) (let ((.cse6 (* v_y_15 4294967296))) (let ((.cse8 (+ (* v_y_11 4294967296) v_z_15 .cse6)) (.cse5 (+ (* 18446744069414584320 v_y_15) (* v_y_6 4294967296) (* 18446744069414584320 v_y_11) (* v_z_15 4294967295)))) (or (< .cse5 63) (< (+ v_z_15 .cse4 .cse6) 4294967296) (< (+ v_z_15 .cse4) 4294967296) (< .cse7 (+ .cse2 v_z_15 .cse6)) (< .cse8 0) (< 4294967295 .cse8) (< .cse3 (+ .cse2 v_z_15)) (< 127 .cse5))))) (forall ((v_y_6 Int) (v_z_9 Int) (v_y_9 Int)) (let ((.cse10 (* v_y_9 4294967296)) (.cse9 (+ (* v_y_6 4294967296) (* 18446744069414584320 v_y_9) (* 4294967295 v_z_9)))) (or (< .cse9 63) (< (+ .cse2 v_z_9 .cse10) 4294967296) (< 4294967295 (+ v_z_9 .cse10)) (< (+ v_z_9 .cse4) 4294967296) (< .cse7 (+ .cse2 v_z_9)) (< 127 .cse9)))))))) is different from false [2023-11-19 07:37:15,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209703858] [2023-11-19 07:37:15,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846910708] [2023-11-19 07:37:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846910708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:15,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:15,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-19 07:37:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208067104] [2023-11-19 07:37:15,612 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:15,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:37:15,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:37:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=499, Unknown=1, NotChecked=50, Total=756 [2023-11-19 07:37:15,615 INFO L87 Difference]: Start difference. First operand 535 states and 837 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 15 states have internal predecessors, (102), 7 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (69), 5 states have call predecessors, (69), 7 states have call successors, (69) [2023-11-19 07:37:16,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:16,946 INFO L93 Difference]: Finished difference Result 1655 states and 2551 transitions. [2023-11-19 07:37:16,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 07:37:16,947 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 15 states have internal predecessors, (102), 7 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (69), 5 states have call predecessors, (69), 7 states have call successors, (69) Word has length 423 [2023-11-19 07:37:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:16,959 INFO L225 Difference]: With dead ends: 1655 [2023-11-19 07:37:16,959 INFO L226 Difference]: Without dead ends: 1123 [2023-11-19 07:37:16,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=405, Invalid=858, Unknown=1, NotChecked=68, Total=1332 [2023-11-19 07:37:16,964 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 431 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:16,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1140 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:37:16,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2023-11-19 07:37:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1105. [2023-11-19 07:37:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 718 states have (on average 1.3565459610027855) internal successors, (974), 720 states have internal predecessors, (974), 362 states have call successors, (362), 24 states have call predecessors, (362), 24 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2023-11-19 07:37:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1698 transitions. [2023-11-19 07:37:17,286 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1698 transitions. Word has length 423 [2023-11-19 07:37:17,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:17,287 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1698 transitions. [2023-11-19 07:37:17,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 15 states have internal predecessors, (102), 7 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (69), 5 states have call predecessors, (69), 7 states have call successors, (69) [2023-11-19 07:37:17,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1698 transitions. [2023-11-19 07:37:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-11-19 07:37:17,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:17,294 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:17,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:17,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:37:17,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:17,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:17,517 INFO L85 PathProgramCache]: Analyzing trace with hash 806434126, now seen corresponding path program 1 times [2023-11-19 07:37:17,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:17,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827183125] [2023-11-19 07:37:17,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:17,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:17,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:17,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362103148] [2023-11-19 07:37:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:17,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:17,593 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:17,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9eb866-c3e5-4fdb-8d01-595a3fdeb579/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:37:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:17,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:37:17,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 3570 proven. 153 refuted. 0 times theorem prover too weak. 5661 trivial. 0 not checked. [2023-11-19 07:37:21,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 51 proven. 153 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-11-19 07:37:33,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:33,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827183125] [2023-11-19 07:37:33,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:33,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362103148] [2023-11-19 07:37:33,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362103148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:33,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:37:33,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 07:37:33,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455518136] [2023-11-19 07:37:33,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:33,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:37:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:33,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:37:33,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=132, Unknown=5, NotChecked=0, Total=182 [2023-11-19 07:37:33,193 INFO L87 Difference]: Start difference. First operand 1105 states and 1698 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 12 states have internal predecessors, (148), 3 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 5 states have call predecessors, (121), 3 states have call successors, (121) [2023-11-19 07:37:35,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:37:38,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]