./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 33f84b4755dee68719d11e9cb73eec944c511a29b8d761889703c1d9d3eed548 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:57,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:57,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:17:57,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:57,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:57,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:57,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:57,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:57,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:57,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:57,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:57,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:57,169 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:57,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:57,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:57,171 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:57,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:57,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:57,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:57,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:57,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:57,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:57,175 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:57,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:57,177 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:57,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:57,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:57,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:57,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:57,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:57,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:57,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:57,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:57,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:57,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:57,183 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:57,184 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:57,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:57,185 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:57,185 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_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33f84b4755dee68719d11e9cb73eec944c511a29b8d761889703c1d9d3eed548 [2023-11-06 22:17:57,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:57,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:57,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:57,497 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:57,497 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:57,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i [2023-11-06 22:18:00,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:01,097 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:01,098 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i [2023-11-06 22:18:01,111 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/data/945fcd5e8/a544fa0b4e324cb682f6374542c03578/FLAGda78cf6a5 [2023-11-06 22:18:01,129 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/data/945fcd5e8/a544fa0b4e324cb682f6374542c03578 [2023-11-06 22:18:01,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:01,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:01,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:01,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:01,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:01,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1000aa7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01, skipping insertion in model container [2023-11-06 22:18:01,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,187 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:01,379 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_79b20b69-7578-4d2c-a07a-2437e582729c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i[919,932] [2023-11-06 22:18:01,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:01,503 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:01,515 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_79b20b69-7578-4d2c-a07a-2437e582729c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i[919,932] [2023-11-06 22:18:01,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:01,603 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:01,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01 WrapperNode [2023-11-06 22:18:01,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:01,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:01,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:01,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:01,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,720 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 223 [2023-11-06 22:18:01,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:01,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:01,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:01,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:01,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,781 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:01,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:01,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:01,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:01,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (1/1) ... [2023-11-06 22:18:01,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:01,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:01,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:01,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:18:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:18:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:18:01,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:02,073 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:02,076 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:02,847 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:02,863 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:02,863 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:18:02,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:02 BoogieIcfgContainer [2023-11-06 22:18:02,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:02,875 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:02,875 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:02,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:02,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:01" (1/3) ... [2023-11-06 22:18:02,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b53a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:02, skipping insertion in model container [2023-11-06 22:18:02,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:01" (2/3) ... [2023-11-06 22:18:02,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b53a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:02, skipping insertion in model container [2023-11-06 22:18:02,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:02" (3/3) ... [2023-11-06 22:18:02,886 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i [2023-11-06 22:18:02,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:02,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:18:02,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:03,008 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33353b18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:03,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:18:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 60 states have (on average 1.4) internal successors, (84), 61 states have internal predecessors, (84), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-06 22:18:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-06 22:18:03,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:03,050 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:03,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:03,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:03,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1324236271, now seen corresponding path program 1 times [2023-11-06 22:18:03,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:03,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92106958] [2023-11-06 22:18:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:03,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:03,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92106958] [2023-11-06 22:18:03,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:18:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646991898] [2023-11-06 22:18:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:03,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:03,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:03,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:03,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:18:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:03,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:18:03,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-11-06 22:18:03,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:03,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646991898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:03,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:03,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:03,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541099300] [2023-11-06 22:18:03,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:03,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:18:03,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:18:04,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:04,047 INFO L87 Difference]: Start difference. First operand has 97 states, 60 states have (on average 1.4) internal successors, (84), 61 states have internal predecessors, (84), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:18:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:04,094 INFO L93 Difference]: Finished difference Result 187 states and 332 transitions. [2023-11-06 22:18:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:18:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 216 [2023-11-06 22:18:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:04,108 INFO L225 Difference]: With dead ends: 187 [2023-11-06 22:18:04,108 INFO L226 Difference]: Without dead ends: 93 [2023-11-06 22:18:04,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:04,118 INFO L413 NwaCegarLoop]: 145 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, 145 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:04,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:18:04,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-06 22:18:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-06 22:18:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 57 states have internal predecessors, (77), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-06 22:18:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 145 transitions. [2023-11-06 22:18:04,195 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 145 transitions. Word has length 216 [2023-11-06 22:18:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:04,196 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 145 transitions. [2023-11-06 22:18:04,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:18:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 145 transitions. [2023-11-06 22:18:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-06 22:18:04,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:04,202 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:04,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:04,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:04,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:04,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash -301353383, now seen corresponding path program 1 times [2023-11-06 22:18:04,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:04,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379994368] [2023-11-06 22:18:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:04,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:04,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205001607] [2023-11-06 22:18:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:04,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:04,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:04,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:04,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:18:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:04,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:18:04,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-11-06 22:18:05,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:05,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:05,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379994368] [2023-11-06 22:18:05,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205001607] [2023-11-06 22:18:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205001607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:05,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:05,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:18:05,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179173143] [2023-11-06 22:18:05,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:05,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:18:05,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:18:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:05,205 INFO L87 Difference]: Start difference. First operand 93 states and 145 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:18:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:05,489 INFO L93 Difference]: Finished difference Result 286 states and 436 transitions. [2023-11-06 22:18:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:18:05,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 216 [2023-11-06 22:18:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:05,497 INFO L225 Difference]: With dead ends: 286 [2023-11-06 22:18:05,497 INFO L226 Difference]: Without dead ends: 196 [2023-11-06 22:18:05,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:18:05,501 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 246 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:05,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 565 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:18:05,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-06 22:18:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 137. [2023-11-06 22:18:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 97 states have internal predecessors, (136), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:18:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 212 transitions. [2023-11-06 22:18:05,540 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 212 transitions. Word has length 216 [2023-11-06 22:18:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:05,542 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 212 transitions. [2023-11-06 22:18:05,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:18:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 212 transitions. [2023-11-06 22:18:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-06 22:18:05,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:05,548 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:05,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:05,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:05,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:05,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:05,758 INFO L85 PathProgramCache]: Analyzing trace with hash -43187945, now seen corresponding path program 1 times [2023-11-06 22:18:05,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:05,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831687915] [2023-11-06 22:18:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:05,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:05,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:05,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540998572] [2023-11-06 22:18:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:05,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:05,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:05,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:05,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:18:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:06,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:06,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 505 proven. 87 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2023-11-06 22:18:06,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-11-06 22:18:06,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:06,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831687915] [2023-11-06 22:18:06,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:06,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540998572] [2023-11-06 22:18:06,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540998572] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:06,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:18:06,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:18:06,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150534843] [2023-11-06 22:18:06,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:06,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:18:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:18:06,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:06,962 INFO L87 Difference]: Start difference. First operand 137 states and 212 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-11-06 22:18:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:07,243 INFO L93 Difference]: Finished difference Result 279 states and 428 transitions. [2023-11-06 22:18:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:18:07,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 216 [2023-11-06 22:18:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:07,255 INFO L225 Difference]: With dead ends: 279 [2023-11-06 22:18:07,255 INFO L226 Difference]: Without dead ends: 140 [2023-11-06 22:18:07,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 424 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:18:07,258 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 142 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:07,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 246 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:07,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-06 22:18:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2023-11-06 22:18:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 94 states have (on average 1.372340425531915) internal successors, (129), 95 states have internal predecessors, (129), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:18:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 205 transitions. [2023-11-06 22:18:07,291 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 205 transitions. Word has length 216 [2023-11-06 22:18:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:07,292 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 205 transitions. [2023-11-06 22:18:07,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-11-06 22:18:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 205 transitions. [2023-11-06 22:18:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-06 22:18:07,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:07,297 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:07,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:07,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:07,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:07,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:07,506 INFO L85 PathProgramCache]: Analyzing trace with hash -82498665, now seen corresponding path program 1 times [2023-11-06 22:18:07,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:07,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051022128] [2023-11-06 22:18:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:07,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:07,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:07,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556360765] [2023-11-06 22:18:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:07,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:07,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:07,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:07,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:18:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:07,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:18:07,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-11-06 22:18:08,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:08,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:08,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051022128] [2023-11-06 22:18:08,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:08,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556360765] [2023-11-06 22:18:08,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556360765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:08,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:08,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:08,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394887434] [2023-11-06 22:18:08,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:08,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:08,127 INFO L87 Difference]: Start difference. First operand 136 states and 205 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:18:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:08,173 INFO L93 Difference]: Finished difference Result 374 states and 565 transitions. [2023-11-06 22:18:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:08,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 216 [2023-11-06 22:18:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:08,177 INFO L225 Difference]: With dead ends: 374 [2023-11-06 22:18:08,177 INFO L226 Difference]: Without dead ends: 241 [2023-11-06 22:18:08,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:08,185 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 41 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:08,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 321 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:18:08,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-06 22:18:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2023-11-06 22:18:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 156 states have (on average 1.3333333333333333) internal successors, (208), 158 states have internal predecessors, (208), 76 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-06 22:18:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 360 transitions. [2023-11-06 22:18:08,274 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 360 transitions. Word has length 216 [2023-11-06 22:18:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:08,278 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 360 transitions. [2023-11-06 22:18:08,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:18:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 360 transitions. [2023-11-06 22:18:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-11-06 22:18:08,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:08,283 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:08,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:08,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:08,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:08,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1983669679, now seen corresponding path program 1 times [2023-11-06 22:18:08,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:08,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580080437] [2023-11-06 22:18:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:08,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:08,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12835851] [2023-11-06 22:18:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:08,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:08,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:08,573 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:08,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:18:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:08,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:18:08,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1187 proven. 168 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2023-11-06 22:18:10,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:11,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:11,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580080437] [2023-11-06 22:18:11,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:11,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12835851] [2023-11-06 22:18:11,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12835851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:11,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:18:11,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-06 22:18:11,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266599373] [2023-11-06 22:18:11,933 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:11,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:18:11,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:18:11,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:18:11,936 INFO L87 Difference]: Start difference. First operand 239 states and 360 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 14 states have internal predecessors, (65), 4 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-11-06 22:18:15,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:15,954 INFO L93 Difference]: Finished difference Result 768 states and 1123 transitions. [2023-11-06 22:18:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-06 22:18:15,955 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 14 states have internal predecessors, (65), 4 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 217 [2023-11-06 22:18:15,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:15,962 INFO L225 Difference]: With dead ends: 768 [2023-11-06 22:18:15,962 INFO L226 Difference]: Without dead ends: 543 [2023-11-06 22:18:15,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=559, Invalid=1891, Unknown=0, NotChecked=0, Total=2450 [2023-11-06 22:18:15,965 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 306 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:15,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 986 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 22:18:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-11-06 22:18:16,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 472. [2023-11-06 22:18:16,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 305 states have (on average 1.2852459016393443) internal successors, (392), 308 states have internal predecessors, (392), 144 states have call successors, (144), 22 states have call predecessors, (144), 22 states have return successors, (144), 141 states have call predecessors, (144), 144 states have call successors, (144) [2023-11-06 22:18:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 680 transitions. [2023-11-06 22:18:16,071 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 680 transitions. Word has length 217 [2023-11-06 22:18:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:16,072 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 680 transitions. [2023-11-06 22:18:16,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 14 states have internal predecessors, (65), 4 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2023-11-06 22:18:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 680 transitions. [2023-11-06 22:18:16,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-11-06 22:18:16,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:16,077 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:16,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:16,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:16,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:16,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1985516721, now seen corresponding path program 1 times [2023-11-06 22:18:16,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:16,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700359754] [2023-11-06 22:18:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:16,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:16,340 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:16,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020067737] [2023-11-06 22:18:16,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:16,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:16,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:16,342 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:16,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79b20b69-7578-4d2c-a07a-2437e582729c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:18:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:16,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-06 22:18:16,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1102 proven. 426 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2023-11-06 22:18:21,535 INFO L327 TraceCheckSpWp]: Computing backward predicates...