./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-23.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-23.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9291c86eddf223a83acb3473de72b486bd461078d4f9b3e4a26d27444f97320c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:31:40,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:31:40,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:31:40,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:31:40,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:31:40,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:31:40,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:31:40,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:31:40,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:31:40,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:31:40,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:31:40,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:31:40,728 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:31:40,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:31:40,730 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:31:40,731 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:31:40,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:31:40,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:31:40,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:31:40,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:31:40,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:31:40,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:31:40,734 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:31:40,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:31:40,735 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:31:40,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:31:40,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:31:40,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:31:40,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:31:40,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:31:40,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:31:40,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:31:40,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:31:40,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:31:40,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:31:40,741 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:31:40,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:31:40,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:31:40,742 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:31:40,742 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_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9291c86eddf223a83acb3473de72b486bd461078d4f9b3e4a26d27444f97320c [2023-11-12 02:31:41,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:31:41,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:31:41,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:31:41,077 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:31:41,077 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:31:41,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-23.i [2023-11-12 02:31:44,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:31:44,583 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:31:44,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-23.i [2023-11-12 02:31:44,608 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/data/03e1e048c/4f1d3cfcd41843b4ab5741f888ac5ad7/FLAGa845485a8 [2023-11-12 02:31:44,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/data/03e1e048c/4f1d3cfcd41843b4ab5741f888ac5ad7 [2023-11-12 02:31:44,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:31:44,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:31:44,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:44,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:31:44,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:31:44,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:44" (1/1) ... [2023-11-12 02:31:44,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:44, skipping insertion in model container [2023-11-12 02:31:44,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:44" (1/1) ... [2023-11-12 02:31:44,706 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:31:44,871 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_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-23.i[916,929] [2023-11-12 02:31:45,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:45,111 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:31:45,122 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_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-23.i[916,929] [2023-11-12 02:31:45,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:45,260 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:31:45,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45 WrapperNode [2023-11-12 02:31:45,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:45,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:45,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:31:45,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:31:45,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,416 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 432 [2023-11-12 02:31:45,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:45,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:31:45,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:31:45,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:31:45,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:31:45,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:31:45,506 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:31:45,506 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:31:45,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (1/1) ... [2023-11-12 02:31:45,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:31:45,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:45,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:31:45,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:31:45,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:31:45,598 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:31:45,598 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:31:45,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:31:45,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:31:45,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:31:45,762 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:31:45,764 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:31:46,697 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:31:46,718 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:31:46,719 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:31:46,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:46 BoogieIcfgContainer [2023-11-12 02:31:46,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:31:46,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:31:46,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:31:46,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:31:46,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:31:44" (1/3) ... [2023-11-12 02:31:46,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454add6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:46, skipping insertion in model container [2023-11-12 02:31:46,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:45" (2/3) ... [2023-11-12 02:31:46,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454add6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:46, skipping insertion in model container [2023-11-12 02:31:46,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:46" (3/3) ... [2023-11-12 02:31:46,734 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-23.i [2023-11-12 02:31:46,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:31:46,759 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:31:46,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:31:46,899 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;@768fc06b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:31:46,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:31:46,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 130 states have internal predecessors, (192), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-12 02:31:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-11-12 02:31:46,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:46,962 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:46,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:46,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:46,971 INFO L85 PathProgramCache]: Analyzing trace with hash 889312721, now seen corresponding path program 1 times [2023-11-12 02:31:46,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:46,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765448922] [2023-11-12 02:31:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:46,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:47,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:47,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765448922] [2023-11-12 02:31:47,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:31:47,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282242654] [2023-11-12 02:31:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:47,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:47,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:47,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:47,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:31:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:47,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:31:47,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2023-11-12 02:31:47,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:31:47,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282242654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:47,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:47,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:31:47,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577429332] [2023-11-12 02:31:47,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:47,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:31:47,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:48,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:31:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:31:48,030 INFO L87 Difference]: Start difference. First operand has 189 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 130 states have internal predecessors, (192), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-12 02:31:48,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:48,084 INFO L93 Difference]: Finished difference Result 371 states and 663 transitions. [2023-11-12 02:31:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:31:48,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) Word has length 373 [2023-11-12 02:31:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:48,097 INFO L225 Difference]: With dead ends: 371 [2023-11-12 02:31:48,098 INFO L226 Difference]: Without dead ends: 185 [2023-11-12 02:31:48,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:31:48,108 INFO L413 NwaCegarLoop]: 299 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, 299 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 [2023-11-12 02:31:48,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-12 02:31:48,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-11-12 02:31:48,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 126 states have (on average 1.4682539682539681) internal successors, (185), 126 states have internal predecessors, (185), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-12 02:31:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 299 transitions. [2023-11-12 02:31:48,180 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 299 transitions. Word has length 373 [2023-11-12 02:31:48,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:48,180 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 299 transitions. [2023-11-12 02:31:48,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-12 02:31:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 299 transitions. [2023-11-12 02:31:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-11-12 02:31:48,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:48,190 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:48,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:31:48,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:31:48,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:48,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1938310551, now seen corresponding path program 1 times [2023-11-12 02:31:48,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:48,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488668965] [2023-11-12 02:31:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:48,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:48,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:48,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427067548] [2023-11-12 02:31:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:48,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:48,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:48,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:48,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:31:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:48,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:31:48,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-11-12 02:31:49,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:31:49,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488668965] [2023-11-12 02:31:49,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:49,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427067548] [2023-11-12 02:31:49,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427067548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:49,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:49,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:31:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581317091] [2023-11-12 02:31:49,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:49,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:31:49,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:49,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:31:49,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:31:49,916 INFO L87 Difference]: Start difference. First operand 185 states and 299 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-12 02:31:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:50,854 INFO L93 Difference]: Finished difference Result 685 states and 1107 transitions. [2023-11-12 02:31:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:31:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 373 [2023-11-12 02:31:50,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:50,863 INFO L225 Difference]: With dead ends: 685 [2023-11-12 02:31:50,864 INFO L226 Difference]: Without dead ends: 503 [2023-11-12 02:31:50,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:31:50,867 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 902 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:50,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1380 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 02:31:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-12 02:31:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 382. [2023-11-12 02:31:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 260 states have (on average 1.4615384615384615) internal successors, (380), 261 states have internal predecessors, (380), 118 states have call successors, (118), 3 states have call predecessors, (118), 3 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-12 02:31:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 616 transitions. [2023-11-12 02:31:50,964 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 616 transitions. Word has length 373 [2023-11-12 02:31:50,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:50,967 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 616 transitions. [2023-11-12 02:31:50,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-12 02:31:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 616 transitions. [2023-11-12 02:31:50,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-11-12 02:31:50,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:50,976 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:50,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:51,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:51,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:51,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1475280527, now seen corresponding path program 1 times [2023-11-12 02:31:51,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:51,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140824337] [2023-11-12 02:31:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:51,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:51,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:51,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152868002] [2023-11-12 02:31:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:51,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:51,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:51,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:51,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:31:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:51,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:31:51,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-11-12 02:31:51,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:31:51,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140824337] [2023-11-12 02:31:51,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152868002] [2023-11-12 02:31:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152868002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:51,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:51,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562108007] [2023-11-12 02:31:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:51,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:51,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:51,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:51,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:51,701 INFO L87 Difference]: Start difference. First operand 382 states and 616 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-12 02:31:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:51,739 INFO L93 Difference]: Finished difference Result 750 states and 1215 transitions. [2023-11-12 02:31:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:51,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 373 [2023-11-12 02:31:51,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:51,747 INFO L225 Difference]: With dead ends: 750 [2023-11-12 02:31:51,747 INFO L226 Difference]: Without dead ends: 382 [2023-11-12 02:31:51,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:51,751 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 87 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:51,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 505 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-12 02:31:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2023-11-12 02:31:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 260 states have (on average 1.4538461538461538) internal successors, (378), 261 states have internal predecessors, (378), 118 states have call successors, (118), 3 states have call predecessors, (118), 3 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-12 02:31:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 614 transitions. [2023-11-12 02:31:51,852 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 614 transitions. Word has length 373 [2023-11-12 02:31:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:51,854 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 614 transitions. [2023-11-12 02:31:51,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-12 02:31:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 614 transitions. [2023-11-12 02:31:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-12 02:31:51,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:51,863 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:51,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 02:31:52,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:52,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:52,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1459950151, now seen corresponding path program 1 times [2023-11-12 02:31:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:52,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866208115] [2023-11-12 02:31:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:52,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:52,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:52,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821527901] [2023-11-12 02:31:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:52,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:52,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:52,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:52,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:31:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:52,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:31:52,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 1086 proven. 153 refuted. 0 times theorem prover too weak. 5145 trivial. 0 not checked. [2023-11-12 02:31:54,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:31:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 15 proven. 153 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-11-12 02:31:54,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866208115] [2023-11-12 02:31:54,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821527901] [2023-11-12 02:31:54,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821527901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:31:54,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:31:54,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-12 02:31:54,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091289418] [2023-11-12 02:31:54,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:31:54,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:31:54,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:54,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:31:54,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:31:54,533 INFO L87 Difference]: Start difference. First operand 382 states and 614 transitions. Second operand has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-11-12 02:31:56,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:56,244 INFO L93 Difference]: Finished difference Result 1188 states and 1921 transitions. [2023-11-12 02:31:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 02:31:56,246 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) Word has length 374 [2023-11-12 02:31:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:56,256 INFO L225 Difference]: With dead ends: 1188 [2023-11-12 02:31:56,257 INFO L226 Difference]: Without dead ends: 999 [2023-11-12 02:31:56,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2023-11-12 02:31:56,260 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1935 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:56,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 1349 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 02:31:56,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2023-11-12 02:31:56,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 747. [2023-11-12 02:31:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 507 states have (on average 1.4516765285996056) internal successors, (736), 508 states have internal predecessors, (736), 232 states have call successors, (232), 7 states have call predecessors, (232), 7 states have return successors, (232), 231 states have call predecessors, (232), 232 states have call successors, (232) [2023-11-12 02:31:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1200 transitions. [2023-11-12 02:31:56,452 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1200 transitions. Word has length 374 [2023-11-12 02:31:56,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:56,454 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1200 transitions. [2023-11-12 02:31:56,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-11-12 02:31:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1200 transitions. [2023-11-12 02:31:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-12 02:31:56,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:56,462 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:56,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:56,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:56,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:56,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1078974673, now seen corresponding path program 1 times [2023-11-12 02:31:56,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:56,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079959163] [2023-11-12 02:31:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:56,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:56,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:56,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591621019] [2023-11-12 02:31:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:56,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:56,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:56,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:56,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:31:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:57,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:31:57,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 896 proven. 156 refuted. 0 times theorem prover too weak. 5332 trivial. 0 not checked. [2023-11-12 02:31:58,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:31:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 12 proven. 156 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-11-12 02:31:58,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:58,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079959163] [2023-11-12 02:31:58,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591621019] [2023-11-12 02:31:58,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591621019] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:31:58,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:31:58,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-12 02:31:58,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576028132] [2023-11-12 02:31:58,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:31:58,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:31:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:58,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:31:58,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:31:58,972 INFO L87 Difference]: Start difference. First operand 747 states and 1200 transitions. Second operand has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-11-12 02:32:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:00,570 INFO L93 Difference]: Finished difference Result 1450 states and 2335 transitions. [2023-11-12 02:32:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:32:00,572 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) Word has length 374 [2023-11-12 02:32:00,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:00,578 INFO L225 Difference]: With dead ends: 1450 [2023-11-12 02:32:00,579 INFO L226 Difference]: Without dead ends: 717 [2023-11-12 02:32:00,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2023-11-12 02:32:00,583 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 801 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:00,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1704 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:32:00,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-11-12 02:32:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 509. [2023-11-12 02:32:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 330 states have (on average 1.403030303030303) internal successors, (463), 330 states have internal predecessors, (463), 171 states have call successors, (171), 7 states have call predecessors, (171), 7 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2023-11-12 02:32:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 805 transitions. [2023-11-12 02:32:00,699 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 805 transitions. Word has length 374 [2023-11-12 02:32:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:00,700 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 805 transitions. [2023-11-12 02:32:00,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-11-12 02:32:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 805 transitions. [2023-11-12 02:32:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-12 02:32:00,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:00,710 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:00,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:00,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:00,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:00,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash 615944649, now seen corresponding path program 1 times [2023-11-12 02:32:00,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887917975] [2023-11-12 02:32:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:01,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:01,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598274888] [2023-11-12 02:32:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:01,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:01,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:01,016 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:01,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844b3998-cf94-49cb-8ae9-7d2bc8c2ecaa/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:32:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:01,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-12 02:32:01,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 4709 proven. 858 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2023-11-12 02:32:12,894 INFO L327 TraceCheckSpWp]: Computing backward predicates...