./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array10_pattern.c --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_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/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_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array10_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/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_9e6dacfc-7622-495b-a22c-09762d66b1d6/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 0942a0394519a722254bfe5a1820a904a71ba1b47e3e66c2c8dc2abe6585692f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:07:50,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:07:50,186 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:07:50,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:07:50,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:07:50,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:07:50,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:07:50,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:07:50,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:07:50,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:07:50,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:07:50,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:07:50,234 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:07:50,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:07:50,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:07:50,237 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:07:50,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:07:50,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:07:50,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:07:50,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:07:50,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:07:50,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:07:50,240 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:07:50,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:07:50,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:07:50,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:07:50,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:07:50,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:07:50,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:50,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:07:50,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:07:50,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:07:50,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:07:50,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:07:50,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:07:50,244 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:07:50,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:07:50,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:07:50,245 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:07:50,245 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_9e6dacfc-7622-495b-a22c-09762d66b1d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0942a0394519a722254bfe5a1820a904a71ba1b47e3e66c2c8dc2abe6585692f [2023-11-06 22:07:50,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:07:50,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:07:50,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:07:50,623 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:07:50,624 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:07:50,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/array-patterns/array10_pattern.c [2023-11-06 22:07:53,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:07:54,082 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:07:54,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/sv-benchmarks/c/array-patterns/array10_pattern.c [2023-11-06 22:07:54,091 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/data/a8bccdb2c/68f747ba74b74a3a9496edefb7466b4c/FLAG5d8c7017f [2023-11-06 22:07:54,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/data/a8bccdb2c/68f747ba74b74a3a9496edefb7466b4c [2023-11-06 22:07:54,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:07:54,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:07:54,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:54,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:07:54,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:07:54,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230933b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54, skipping insertion in model container [2023-11-06 22:07:54,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,145 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:07:54,316 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_9e6dacfc-7622-495b-a22c-09762d66b1d6/sv-benchmarks/c/array-patterns/array10_pattern.c[1326,1339] [2023-11-06 22:07:54,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:54,376 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:07:54,392 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_9e6dacfc-7622-495b-a22c-09762d66b1d6/sv-benchmarks/c/array-patterns/array10_pattern.c[1326,1339] [2023-11-06 22:07:54,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:54,428 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:07:54,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54 WrapperNode [2023-11-06 22:07:54,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:54,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:54,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:07:54,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:07:54,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,471 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-11-06 22:07:54,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:54,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:07:54,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:07:54,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:07:54,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,493 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:07:54,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:07:54,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:07:54,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:07:54,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (1/1) ... [2023-11-06 22:07:54,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:54,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:54,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:54,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:07:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:07:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:07:54,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:07:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:07:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:07:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:07:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:07:54,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:07:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:07:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:07:54,651 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:07:54,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:07:54,876 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:07:54,883 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:07:54,884 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:07:54,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:54 BoogieIcfgContainer [2023-11-06 22:07:54,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:07:54,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:07:54,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:07:54,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:07:54,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:07:54" (1/3) ... [2023-11-06 22:07:54,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697e6385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:54, skipping insertion in model container [2023-11-06 22:07:54,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:54" (2/3) ... [2023-11-06 22:07:54,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697e6385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:54, skipping insertion in model container [2023-11-06 22:07:54,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:54" (3/3) ... [2023-11-06 22:07:54,896 INFO L112 eAbstractionObserver]: Analyzing ICFG array10_pattern.c [2023-11-06 22:07:54,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:07:54,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:07:54,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:07:54,972 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;@6469cf86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:07:54,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:07:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:07:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:07:54,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:54,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:54,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:54,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1199380475, now seen corresponding path program 1 times [2023-11-06 22:07:55,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:55,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154849387] [2023-11-06 22:07:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:55,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:55,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:55,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154849387] [2023-11-06 22:07:55,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:07:55,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936135478] [2023-11-06 22:07:55,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:55,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:55,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:55,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:55,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:07:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:55,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:07:55,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:55,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:55,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936135478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:55,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:07:55,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161034342] [2023-11-06 22:07:55,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:55,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:07:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:55,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:07:55,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:07:55,333 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:07:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:55,353 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2023-11-06 22:07:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:07:55,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-06 22:07:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:55,363 INFO L225 Difference]: With dead ends: 51 [2023-11-06 22:07:55,364 INFO L226 Difference]: Without dead ends: 23 [2023-11-06 22:07:55,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 22:07:55,371 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:55,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:07:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-06 22:07:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-06 22:07:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:07:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-06 22:07:55,423 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2023-11-06 22:07:55,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:55,424 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-06 22:07:55,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:07:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-06 22:07:55,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:07:55,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:55,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:55,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:55,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:55,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:55,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash 966180883, now seen corresponding path program 1 times [2023-11-06 22:07:55,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:55,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230112683] [2023-11-06 22:07:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:55,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:55,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:55,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611783953] [2023-11-06 22:07:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:55,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:55,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:55,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:55,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:07:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:55,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:07:55,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:55,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:55,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:55,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230112683] [2023-11-06 22:07:55,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611783953] [2023-11-06 22:07:55,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611783953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:55,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:55,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:07:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056527892] [2023-11-06 22:07:55,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:55,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:07:55,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:07:55,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:07:55,971 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:07:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:56,067 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2023-11-06 22:07:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:07:56,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-11-06 22:07:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:56,068 INFO L225 Difference]: With dead ends: 48 [2023-11-06 22:07:56,069 INFO L226 Difference]: Without dead ends: 31 [2023-11-06 22:07:56,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:07:56,071 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:56,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 55 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:07:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-06 22:07:56,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-11-06 22:07:56,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:07:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-06 22:07:56,079 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2023-11-06 22:07:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:56,080 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-06 22:07:56,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:07:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-06 22:07:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:07:56,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:56,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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 22:07:56,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:56,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:56,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:56,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash -760544265, now seen corresponding path program 1 times [2023-11-06 22:07:56,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:56,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168257270] [2023-11-06 22:07:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:56,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:56,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:56,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427101802] [2023-11-06 22:07:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:56,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:56,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:56,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:56,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:07:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:56,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 22:07:56,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:56,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:07:56,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-06 22:07:57,194 INFO L322 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2023-11-06 22:07:57,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2023-11-06 22:07:57,444 INFO L322 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2023-11-06 22:07:57,444 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2023-11-06 22:07:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:57,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:46,526 WARN L293 SmtUtils]: Spent 19.74s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:10:00,235 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse4 (* |c_ULTIMATE.start_main_~sum~0#1| 4)) (.cse9 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0))) (and (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_53 (Array Int Int)) (v_z_7 Int) (v_y_7 Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_53)) (.cse12 (* v_z_7 4))) (let ((.cse11 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse12)) (.cse6 (select .cse5 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse7 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse12))) (let ((.cse0 (mod (* v_z_7 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296)) (.cse8 (mod (select .cse6 .cse7) 4294967296)) (.cse2 (* v_y_7 4294967296)) (.cse1 (select v_ArrVal_53 .cse11))) (or (< 2147483647 .cse0) (not (= .cse0 .cse1)) (< c_~ARR_SIZE~0 (+ .cse2 v_z_7 1)) (< v_z_7 2147483648) (< (let ((.cse3 (store .cse6 .cse7 .cse8))) (+ (* (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4) .cse4 (* (select (select (store .cse5 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse3) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4))) .cse9) (< 4294967295 v_z_7) (< 2147483647 .cse8) (< (+ .cse2 v_z_7) 0) (not (= (store .cse10 .cse11 .cse1) v_ArrVal_53))))))) (forall ((v_z_20 Int) (v_y_20 Int)) (let ((.cse13 (* v_y_20 4294967296))) (or (< c_~ARR_SIZE~0 (+ v_z_20 .cse13 1)) (< (+ v_z_20 .cse13) 0) (< 2147483647 v_z_20) (< v_z_20 0) (forall ((|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse21 (mod (* v_z_20 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (forall ((v_ArrVal_53 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_53)) (.cse22 (* v_z_20 4))) (let ((.cse19 (+ .cse22 |c_ULTIMATE.start_main_~#array1~0#1.offset|)) (.cse16 (select .cse14 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse17 (+ .cse22 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (let ((.cse18 (mod (select .cse16 .cse17) 4294967296)) (.cse20 (select v_ArrVal_53 .cse19))) (or (< (let ((.cse15 (store .cse16 .cse17 .cse18))) (+ (* (select (select (store .cse14 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse15) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4) (* (select .cse15 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4) .cse4)) .cse9) (not (= v_ArrVal_53 (store .cse10 .cse19 .cse20))) (< 2147483647 .cse18) (not (= (+ .cse20 4294967296) .cse21))))))) (< .cse21 2147483648))))))) (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_53 (Array Int Int)) (v_z_11 Int) (v_y_11 Int)) (let ((.cse29 (* v_z_11 4))) (let ((.cse30 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse29))) (let ((.cse23 (* v_y_11 4294967296)) (.cse24 (mod (* v_z_11 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296)) (.cse31 (select v_ArrVal_53 .cse30))) (or (< c_~ARR_SIZE~0 (+ .cse23 v_z_11 1)) (< .cse24 2147483648) (< (+ .cse23 v_z_11) 0) (< (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_53))) (let ((.cse25 (let ((.cse27 (select .cse26 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse28 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse29))) (store .cse27 .cse28 (+ (mod (select .cse27 .cse28) 4294967296) (- 4294967296)))))) (+ (* 4 (select .cse25 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse4 (* (select (select (store .cse26 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse25) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4)))) .cse9) (not (= (store .cse10 .cse30 .cse31) v_ArrVal_53)) (not (= .cse24 (+ .cse31 4294967296))) (< v_z_11 2147483648) (< 4294967295 v_z_11)))))) (forall ((v_z_20 Int) (v_y_20 Int)) (let ((.cse32 (* v_y_20 4294967296))) (or (< c_~ARR_SIZE~0 (+ v_z_20 .cse32 1)) (< (+ v_z_20 .cse32) 0) (< 2147483647 v_z_20) (forall ((|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse35 (mod (* v_z_20 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (forall ((v_ArrVal_53 (Array Int Int))) (let ((.cse40 (* v_z_20 4))) (let ((.cse33 (+ .cse40 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (let ((.cse34 (select v_ArrVal_53 .cse33))) (or (not (= v_ArrVal_53 (store .cse10 .cse33 .cse34))) (not (= (+ .cse34 4294967296) .cse35)) (< (let ((.cse36 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_53))) (let ((.cse37 (let ((.cse38 (select .cse36 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse39 (+ .cse40 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store .cse38 .cse39 (+ (mod (select .cse38 .cse39) 4294967296) (- 4294967296)))))) (+ (* (select (select (store .cse36 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse37) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4) .cse4 (* (select .cse37 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4)))) .cse9)))))) (< .cse35 2147483648)))) (< v_z_20 0)))) (forall ((v_z_20 Int) (v_y_20 Int)) (let ((.cse41 (* v_y_20 4294967296))) (or (< c_~ARR_SIZE~0 (+ v_z_20 .cse41 1)) (forall ((|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse42 (mod (* v_z_20 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (< 2147483647 .cse42) (forall ((v_ArrVal_53 (Array Int Int))) (let ((.cse43 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_53)) (.cse50 (* v_z_20 4))) (let ((.cse48 (+ .cse50 |c_ULTIMATE.start_main_~#array1~0#1.offset|)) (.cse45 (select .cse43 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse46 (+ .cse50 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (let ((.cse47 (mod (select .cse45 .cse46) 4294967296)) (.cse49 (select v_ArrVal_53 .cse48))) (or (< (let ((.cse44 (store .cse45 .cse46 .cse47))) (+ (* (select (select (store .cse43 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse44) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4) (* (select .cse44 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4) .cse4)) .cse9) (not (= v_ArrVal_53 (store .cse10 .cse48 .cse49))) (< 2147483647 .cse47) (not (= .cse49 .cse42)))))))))) (< (+ v_z_20 .cse41) 0) (< 2147483647 v_z_20) (< v_z_20 0)))) (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_z_5 Int) (v_y_5 Int) (v_ArrVal_53 (Array Int Int))) (let ((.cse59 (* v_z_5 4))) (let ((.cse54 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse59))) (let ((.cse51 (select v_ArrVal_53 .cse54)) (.cse53 (* v_y_5 4294967296)) (.cse52 (mod (* v_z_5 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (< 4294967295 v_z_5) (not (= .cse51 .cse52)) (< c_~ARR_SIZE~0 (+ v_z_5 .cse53 1)) (not (= v_ArrVal_53 (store .cse10 .cse54 .cse51))) (< (+ v_z_5 .cse53) 0) (< v_z_5 2147483648) (< 2147483647 .cse52) (< (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_53))) (let ((.cse56 (let ((.cse57 (select .cse55 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse58 (+ (- 17179869184) .cse59 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store .cse57 .cse58 (+ (mod (select .cse57 .cse58) 4294967296) (- 4294967296)))))) (+ (* (select (select (store .cse55 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse56) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4) .cse4 (* 4 (select .cse56 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) .cse9)))))) (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_z_16 Int) (v_y_16 Int) (v_ArrVal_53 (Array Int Int))) (let ((.cse69 (* v_z_16 4)) (.cse65 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_53))) (let ((.cse67 (select .cse65 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse68 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse69)) (.cse62 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse69))) (let ((.cse60 (mod (* v_z_16 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296)) (.cse63 (select v_ArrVal_53 .cse62)) (.cse61 (mod (select .cse67 .cse68) 4294967296)) (.cse64 (* v_y_16 4294967296))) (or (< 4294967295 v_z_16) (< .cse60 2147483648) (< v_z_16 2147483648) (< 2147483647 .cse61) (not (= (store .cse10 .cse62 .cse63) v_ArrVal_53)) (< (+ v_z_16 .cse64) 0) (not (= .cse60 (+ .cse63 4294967296))) (< (let ((.cse66 (store .cse67 .cse68 .cse61))) (+ (* (select (select (store .cse65 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse66) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4) (* (select .cse66 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4) .cse4)) .cse9) (< c_~ARR_SIZE~0 (+ v_z_16 .cse64 1))))))) (forall ((v_z_20 Int) (v_y_20 Int)) (let ((.cse70 (* v_y_20 4294967296))) (or (< c_~ARR_SIZE~0 (+ v_z_20 .cse70 1)) (< (+ v_z_20 .cse70) 0) (forall ((|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse71 (mod (* v_z_20 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (< 2147483647 .cse71) (forall ((v_ArrVal_53 (Array Int Int))) (let ((.cse78 (* v_z_20 4))) (let ((.cse72 (+ .cse78 |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (let ((.cse73 (select v_ArrVal_53 .cse72))) (or (not (= v_ArrVal_53 (store .cse10 .cse72 .cse73))) (not (= .cse73 .cse71)) (< (let ((.cse74 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_53))) (let ((.cse75 (let ((.cse76 (select .cse74 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse77 (+ .cse78 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store .cse76 .cse77 (+ (mod (select .cse76 .cse77) 4294967296) (- 4294967296)))))) (+ (* (select (select (store .cse74 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse75) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4) .cse4 (* (select .cse75 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4)))) .cse9))))))))) (< 2147483647 v_z_20) (< v_z_20 0)))))) is different from true [2023-11-06 22:10:00,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:00,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168257270] [2023-11-06 22:10:00,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:10:00,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427101802] [2023-11-06 22:10:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427101802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:00,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:00,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-06 22:10:00,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798305323] [2023-11-06 22:10:00,243 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:10:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:10:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=434, Unknown=17, NotChecked=44, Total=600 [2023-11-06 22:10:00,246 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 17 states, 17 states have (on average 1.411764705882353) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:10:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:10:06,207 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2023-11-06 22:10:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:10:06,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.411764705882353) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2023-11-06 22:10:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:10:06,209 INFO L225 Difference]: With dead ends: 73 [2023-11-06 22:10:06,209 INFO L226 Difference]: Without dead ends: 53 [2023-11-06 22:10:06,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 58.3s TimeCoverageRelationStatistics Valid=206, Invalid=835, Unknown=19, NotChecked=62, Total=1122 [2023-11-06 22:10:06,212 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:10:06,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 111 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:10:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-06 22:10:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2023-11-06 22:10:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:10:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-06 22:10:06,226 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 28 [2023-11-06 22:10:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:10:06,226 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-06 22:10:06,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.411764705882353) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:10:06,227 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-06 22:10:06,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:10:06,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:10:06,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:06,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:10:06,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:06,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:10:06,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash -685364711, now seen corresponding path program 2 times [2023-11-06 22:10:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751458418] [2023-11-06 22:10:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:06,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:06,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:10:06,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133752029] [2023-11-06 22:10:06,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:06,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:06,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:06,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:06,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:10:06,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:10:06,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:06,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:06,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:06,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:10:06,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:06,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751458418] [2023-11-06 22:10:06,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:10:06,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133752029] [2023-11-06 22:10:06,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133752029] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:06,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:10:06,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-06 22:10:06,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125079627] [2023-11-06 22:10:06,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:06,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:10:06,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:06,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:10:06,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:10:06,692 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:10:06,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:10:06,853 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2023-11-06 22:10:06,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:10:06,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-06 22:10:06,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:10:06,856 INFO L225 Difference]: With dead ends: 59 [2023-11-06 22:10:06,856 INFO L226 Difference]: Without dead ends: 39 [2023-11-06 22:10:06,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:10:06,858 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:10:06,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 103 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:10:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-06 22:10:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2023-11-06 22:10:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:10:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-11-06 22:10:06,865 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 30 [2023-11-06 22:10:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:10:06,865 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-11-06 22:10:06,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:10:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-11-06 22:10:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:10:06,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:10:06,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:06,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:07,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:07,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:10:07,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1406627783, now seen corresponding path program 3 times [2023-11-06 22:10:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:07,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051018878] [2023-11-06 22:10:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:07,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:10:07,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001149596] [2023-11-06 22:10:07,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:10:07,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:07,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:07,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:10:07,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 22:10:07,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:07,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:07,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:07,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:10:07,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:07,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051018878] [2023-11-06 22:10:07,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:10:07,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001149596] [2023-11-06 22:10:07,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001149596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:07,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:10:07,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-06 22:10:07,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005501997] [2023-11-06 22:10:07,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:07,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:10:07,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:10:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:10:07,450 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:10:07,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:10:07,579 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-11-06 22:10:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:10:07,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-06 22:10:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:10:07,581 INFO L225 Difference]: With dead ends: 38 [2023-11-06 22:10:07,581 INFO L226 Difference]: Without dead ends: 34 [2023-11-06 22:10:07,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:10:07,582 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:10:07,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 76 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:10:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-06 22:10:07,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-11-06 22:10:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:10:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-11-06 22:10:07,591 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 30 [2023-11-06 22:10:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:10:07,591 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-11-06 22:10:07,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:10:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-11-06 22:10:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:10:07,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:10:07,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:07,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:07,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:07,800 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:10:07,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1198632411, now seen corresponding path program 4 times [2023-11-06 22:10:07,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:07,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205303885] [2023-11-06 22:10:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:07,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:07,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:10:07,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324286563] [2023-11-06 22:10:07,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:10:07,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:07,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:07,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:07,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e6dacfc-7622-495b-a22c-09762d66b1d6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:10:08,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:10:08,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:08,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-06 22:10:08,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:08,183 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:10:08,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:08,230 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-11-06 22:10:08,234 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:10:08,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 20 [2023-11-06 22:10:09,145 INFO L322 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2023-11-06 22:10:09,145 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 120 [2023-11-06 22:10:09,552 INFO L322 Elim1Store]: treesize reduction 75, result has 34.2 percent of original size [2023-11-06 22:10:09,552 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 137 [2023-11-06 22:10:09,696 INFO L322 Elim1Store]: treesize reduction 128, result has 19.0 percent of original size [2023-11-06 22:10:09,696 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 78 treesize of output 51 [2023-11-06 22:10:09,782 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:10:09,841 INFO L322 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2023-11-06 22:10:09,841 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 96 [2023-11-06 22:10:09,920 INFO L322 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-11-06 22:10:09,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 20 [2023-11-06 22:10:10,147 INFO L322 Elim1Store]: treesize reduction 119, result has 37.4 percent of original size [2023-11-06 22:10:10,147 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 62 treesize of output 172 [2023-11-06 22:10:10,398 INFO L322 Elim1Store]: treesize reduction 216, result has 20.0 percent of original size [2023-11-06 22:10:10,398 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 127 treesize of output 118 [2023-11-06 22:10:16,419 INFO L322 Elim1Store]: treesize reduction 912, result has 6.3 percent of original size [2023-11-06 22:10:16,420 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 102 case distinctions, treesize of input 779 treesize of output 704 [2023-11-06 22:10:16,464 INFO L322 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-11-06 22:10:16,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 170 treesize of output 382 [2023-11-06 22:11:29,862 WARN L293 SmtUtils]: Spent 47.35s on a formula simplification that was a NOOP. DAG size: 389 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-06 22:11:29,863 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:11:29,864 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 90 case distinctions, treesize of input 1461 treesize of output 1953