./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-30.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_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/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_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/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_f3292e96-6b7a-440a-80fb-62ec5a19547e/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 6b58d24144d549c81ae478cdbe56bd6625ad814c6ede850dce7ec3284e5d3039 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:41,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:41,175 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:07:41,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:41,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:41,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:41,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:41,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:41,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:41,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:41,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:41,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:41,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:41,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:41,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:07:41,254 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:41,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:41,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:41,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:41,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:07:41,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:41,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:07:41,259 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:41,259 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:07:41,260 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:41,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:41,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:41,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:41,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:41,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:41,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:41,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:07:41,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:07:41,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:07:41,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:41,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:07:41,267 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:41,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:41,267 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:41,268 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_f3292e96-6b7a-440a-80fb-62ec5a19547e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b58d24144d549c81ae478cdbe56bd6625ad814c6ede850dce7ec3284e5d3039 [2023-11-12 02:07:41,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:41,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:41,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:41,622 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:41,622 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:41,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-30.i [2023-11-12 02:07:45,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:45,445 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:45,446 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-30.i [2023-11-12 02:07:45,498 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/data/9da5ff4d7/b5fb7c40252742d4bab13e64a9548476/FLAG16cebb79f [2023-11-12 02:07:45,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/data/9da5ff4d7/b5fb7c40252742d4bab13e64a9548476 [2023-11-12 02:07:45,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:45,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:45,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:45,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:45,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:45,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:45,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9691acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45, skipping insertion in model container [2023-11-12 02:07:45,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:45,592 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:45,772 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_f3292e96-6b7a-440a-80fb-62ec5a19547e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-30.i[916,929] [2023-11-12 02:07:45,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:45,876 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:07:45,888 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_f3292e96-6b7a-440a-80fb-62ec5a19547e/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-30.i[916,929] [2023-11-12 02:07:45,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:45,969 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:07:45,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45 WrapperNode [2023-11-12 02:07:45,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:45,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:45,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:07:45,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:07:45,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,074 INFO L138 Inliner]: procedures = 29, calls = 172, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 461 [2023-11-12 02:07:46,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:46,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:07:46,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:07:46,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:07:46,088 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:07:46,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:07:46,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:07:46,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:07:46,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (1/1) ... [2023-11-12 02:07:46,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:46,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:46,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:07:46,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:07:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:07:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-12 02:07:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:07:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-12 02:07:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:07:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-12 02:07:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:07:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:07:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:07:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:07:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:07:46,478 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:07:46,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:07:47,361 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:07:47,372 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:07:47,372 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:07:47,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:47 BoogieIcfgContainer [2023-11-12 02:07:47,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:07:47,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:07:47,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:07:47,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:07:47,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:45" (1/3) ... [2023-11-12 02:07:47,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dd0362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:47, skipping insertion in model container [2023-11-12 02:07:47,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:45" (2/3) ... [2023-11-12 02:07:47,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dd0362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:47, skipping insertion in model container [2023-11-12 02:07:47,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:47" (3/3) ... [2023-11-12 02:07:47,387 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-30.i [2023-11-12 02:07:47,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:07:47,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:07:47,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:47,488 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;@bc595d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:47,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:07:47,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 98 states have (on average 1.4183673469387754) internal successors, (139), 99 states have internal predecessors, (139), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:07:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-12 02:07:47,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:47,516 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:47,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:47,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash -931553331, now seen corresponding path program 1 times [2023-11-12 02:07:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:47,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778047395] [2023-11-12 02:07:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:47,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:47,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778047395] [2023-11-12 02:07:47,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:07:47,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534735405] [2023-11-12 02:07:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:47,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:47,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:47,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:47,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:07:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:48,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:07:48,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-11-12 02:07:48,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534735405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:48,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:48,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:48,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770649220] [2023-11-12 02:07:48,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:48,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:07:48,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:48,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:07:48,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:07:48,394 INFO L87 Difference]: Start difference. First operand has 118 states, 98 states have (on average 1.4183673469387754) internal successors, (139), 99 states have internal predecessors, (139), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 02:07:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:48,443 INFO L93 Difference]: Finished difference Result 229 states and 357 transitions. [2023-11-12 02:07:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:07:48,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2023-11-12 02:07:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:48,458 INFO L225 Difference]: With dead ends: 229 [2023-11-12 02:07:48,458 INFO L226 Difference]: Without dead ends: 114 [2023-11-12 02:07:48,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 137 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 02:07:48,468 INFO L413 NwaCegarLoop]: 166 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, 166 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 02:07:48,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-12 02:07:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-12 02:07:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 95 states have (on average 1.3894736842105264) internal successors, (132), 95 states have internal predecessors, (132), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:07:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 166 transitions. [2023-11-12 02:07:48,539 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 166 transitions. Word has length 138 [2023-11-12 02:07:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:48,540 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 166 transitions. [2023-11-12 02:07:48,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 02:07:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 166 transitions. [2023-11-12 02:07:48,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-12 02:07:48,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:48,546 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:48,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:48,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:48,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:48,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1765490505, now seen corresponding path program 1 times [2023-11-12 02:07:48,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971885740] [2023-11-12 02:07:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:48,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:48,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:48,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571678982] [2023-11-12 02:07:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:48,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:48,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:48,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:48,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:07:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:49,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:07:49,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:07:49,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971885740] [2023-11-12 02:07:49,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:49,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571678982] [2023-11-12 02:07:49,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571678982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:49,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:49,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:49,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121940688] [2023-11-12 02:07:49,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:49,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:49,319 INFO L87 Difference]: Start difference. First operand 114 states and 166 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:49,408 INFO L93 Difference]: Finished difference Result 229 states and 334 transitions. [2023-11-12 02:07:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:49,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-11-12 02:07:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:49,412 INFO L225 Difference]: With dead ends: 229 [2023-11-12 02:07:49,413 INFO L226 Difference]: Without dead ends: 118 [2023-11-12 02:07:49,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:49,416 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 3 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:49,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 481 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-12 02:07:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-11-12 02:07:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 97 states have (on average 1.3814432989690721) internal successors, (134), 97 states have internal predecessors, (134), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:07:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 168 transitions. [2023-11-12 02:07:49,438 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 168 transitions. Word has length 138 [2023-11-12 02:07:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:49,441 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 168 transitions. [2023-11-12 02:07:49,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 168 transitions. [2023-11-12 02:07:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-12 02:07:49,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:49,450 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:49,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:49,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:49,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:49,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1763643463, now seen corresponding path program 1 times [2023-11-12 02:07:49,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:49,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013069417] [2023-11-12 02:07:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:49,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:49,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334652397] [2023-11-12 02:07:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:49,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:49,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:49,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:49,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:07:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:50,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:07:50,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:50,815 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 17 treesize of output 17 [2023-11-12 02:07:50,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:50,870 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:07:50,871 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2023-11-12 02:07:51,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:51,100 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:07:51,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 15 [2023-11-12 02:07:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:07:51,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:51,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:51,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013069417] [2023-11-12 02:07:51,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:51,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334652397] [2023-11-12 02:07:51,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334652397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:51,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:51,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:07:51,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561451251] [2023-11-12 02:07:51,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:51,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:51,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:51,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:51,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:51,127 INFO L87 Difference]: Start difference. First operand 116 states and 168 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:52,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:52,721 INFO L93 Difference]: Finished difference Result 247 states and 361 transitions. [2023-11-12 02:07:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:07:52,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-11-12 02:07:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:52,740 INFO L225 Difference]: With dead ends: 247 [2023-11-12 02:07:52,740 INFO L226 Difference]: Without dead ends: 134 [2023-11-12 02:07:52,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:07:52,743 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 128 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:52,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 397 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 02:07:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-12 02:07:52,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 124. [2023-11-12 02:07:52,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 105 states have (on average 1.3904761904761904) internal successors, (146), 105 states have internal predecessors, (146), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:07:52,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 180 transitions. [2023-11-12 02:07:52,764 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 180 transitions. Word has length 138 [2023-11-12 02:07:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:52,765 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 180 transitions. [2023-11-12 02:07:52,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 180 transitions. [2023-11-12 02:07:52,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-12 02:07:52,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:52,769 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:52,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:52,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:52,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:52,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1007383518, now seen corresponding path program 1 times [2023-11-12 02:07:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:52,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357569621] [2023-11-12 02:07:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:52,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:53,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:53,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565994848] [2023-11-12 02:07:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:53,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:53,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:53,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:53,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:07:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:53,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:07:53,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:54,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:54,333 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 19 treesize of output 14 [2023-11-12 02:07:54,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:54,410 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 19 treesize of output 14 [2023-11-12 02:07:54,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:54,431 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 19 treesize of output 14 [2023-11-12 02:07:54,459 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 10 [2023-11-12 02:07:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:07:54,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:54,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357569621] [2023-11-12 02:07:54,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565994848] [2023-11-12 02:07:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565994848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:54,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:54,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:07:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394874163] [2023-11-12 02:07:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:54,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:07:54,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:07:54,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:54,484 INFO L87 Difference]: Start difference. First operand 124 states and 180 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:55,357 INFO L93 Difference]: Finished difference Result 318 states and 462 transitions. [2023-11-12 02:07:55,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:07:55,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-11-12 02:07:55,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:55,361 INFO L225 Difference]: With dead ends: 318 [2023-11-12 02:07:55,362 INFO L226 Difference]: Without dead ends: 197 [2023-11-12 02:07:55,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:07:55,365 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 240 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:55,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 444 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:07:55,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-12 02:07:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 138. [2023-11-12 02:07:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 119 states have (on average 1.403361344537815) internal successors, (167), 119 states have internal predecessors, (167), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:07:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 201 transitions. [2023-11-12 02:07:55,386 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 201 transitions. Word has length 139 [2023-11-12 02:07:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:55,388 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 201 transitions. [2023-11-12 02:07:55,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 201 transitions. [2023-11-12 02:07:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-12 02:07:55,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:55,392 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:55,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:55,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:55,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:55,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:55,601 INFO L85 PathProgramCache]: Analyzing trace with hash -241162576, now seen corresponding path program 1 times [2023-11-12 02:07:55,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:55,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925695372] [2023-11-12 02:07:55,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:55,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:55,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:55,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059951144] [2023-11-12 02:07:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:55,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:55,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:55,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:55,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:07:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:55,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-12 02:07:55,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:56,787 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 17 treesize of output 17 [2023-11-12 02:07:56,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:56,840 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 22 treesize of output 15 [2023-11-12 02:07:56,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:56,912 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 22 treesize of output 15 [2023-11-12 02:07:56,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:56,929 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 22 treesize of output 15 [2023-11-12 02:07:56,961 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:07:56,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-11-12 02:07:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-12 02:07:56,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:57,117 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_519 (Array Int Int)) (v_ArrVal_521 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_519) |c_~#float_Array_0~0.base| v_ArrVal_521) |c_~#unsigned_char_Array_0~0.base|))) (= (mod (select .cse0 |c_~#unsigned_char_Array_0~0.offset|) 256) (mod (select .cse0 (+ |c_~#unsigned_char_Array_0~0.offset| 3)) 256)))) is different from false [2023-11-12 02:07:57,137 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:07:57,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 48 [2023-11-12 02:07:57,146 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:07:57,147 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 80 [2023-11-12 02:07:57,154 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-11-12 02:07:57,160 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:07:57,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2023-11-12 02:07:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:07:57,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:57,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925695372] [2023-11-12 02:07:57,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:57,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059951144] [2023-11-12 02:07:57,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059951144] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:57,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:57,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-12 02:07:57,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767172448] [2023-11-12 02:07:57,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:07:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:07:57,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=140, Unknown=3, NotChecked=24, Total=210 [2023-11-12 02:07:57,460 INFO L87 Difference]: Start difference. First operand 138 states and 201 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:58,258 INFO L93 Difference]: Finished difference Result 342 states and 497 transitions. [2023-11-12 02:07:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:07:58,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-11-12 02:07:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:58,263 INFO L225 Difference]: With dead ends: 342 [2023-11-12 02:07:58,263 INFO L226 Difference]: Without dead ends: 207 [2023-11-12 02:07:58,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=264, Unknown=3, NotChecked=34, Total=380 [2023-11-12 02:07:58,265 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 369 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:58,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 448 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 517 Invalid, 0 Unknown, 264 Unchecked, 0.6s Time] [2023-11-12 02:07:58,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-12 02:07:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 150. [2023-11-12 02:07:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 1.4045801526717556) internal successors, (184), 131 states have internal predecessors, (184), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:07:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 218 transitions. [2023-11-12 02:07:58,312 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 218 transitions. Word has length 139 [2023-11-12 02:07:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:58,313 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 218 transitions. [2023-11-12 02:07:58,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 218 transitions. [2023-11-12 02:07:58,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-12 02:07:58,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:58,316 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:58,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-12 02:07:58,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:58,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:58,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1362183814, now seen corresponding path program 1 times [2023-11-12 02:07:58,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:58,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272661966] [2023-11-12 02:07:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:58,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:58,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:58,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557035912] [2023-11-12 02:07:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:58,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:58,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:58,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:58,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:07:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:58,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:07:58,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:07:58,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:58,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:58,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272661966] [2023-11-12 02:07:58,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:58,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557035912] [2023-11-12 02:07:58,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557035912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:58,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:58,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:07:58,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051650573] [2023-11-12 02:07:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:58,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:58,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:58,857 INFO L87 Difference]: Start difference. First operand 150 states and 218 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:58,914 INFO L93 Difference]: Finished difference Result 320 states and 466 transitions. [2023-11-12 02:07:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:58,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-11-12 02:07:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:58,916 INFO L225 Difference]: With dead ends: 320 [2023-11-12 02:07:58,917 INFO L226 Difference]: Without dead ends: 173 [2023-11-12 02:07:58,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:58,918 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 65 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:58,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 677 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-12 02:07:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 151. [2023-11-12 02:07:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 132 states have (on average 1.4015151515151516) internal successors, (185), 132 states have internal predecessors, (185), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:07:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2023-11-12 02:07:58,933 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 141 [2023-11-12 02:07:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:58,934 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2023-11-12 02:07:58,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:07:58,935 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2023-11-12 02:07:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-12 02:07:58,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:58,937 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:58,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:59,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:59,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:59,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash -873670949, now seen corresponding path program 1 times [2023-11-12 02:07:59,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:59,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029636053] [2023-11-12 02:07:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:59,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:59,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769976222] [2023-11-12 02:07:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:59,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:59,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:59,196 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:59,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:07:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:59,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-12 02:07:59,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:00,394 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 17 treesize of output 17 [2023-11-12 02:08:00,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:00,456 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:08:00,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2023-11-12 02:08:00,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:00,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:00,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:00,630 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-11-12 02:08:00,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:00,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:00,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:00,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-11-12 02:08:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-12 02:08:00,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:00,985 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#signed_long_int_Array_0~0.offset| Int) (v_ArrVal_725 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (store (select |c_#memory_int| |c_~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset| (mod (select (select |c_#memory_int| |c_~#unsigned_char_Array_0~0.base|) |c_~#unsigned_char_Array_0~0.offset|) 256))) |c_~#float_Array_0~0.base| v_ArrVal_725))) (= (mod (select (select .cse0 |c_~#unsigned_char_Array_0~0.base|) |c_~#unsigned_char_Array_0~0.offset|) 256) (select (select .cse0 |c_~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset|)))) is different from false [2023-11-12 02:08:01,087 INFO L322 Elim1Store]: treesize reduction 38, result has 57.3 percent of original size [2023-11-12 02:08:01,087 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 70 [2023-11-12 02:08:01,135 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:08:01,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 118 [2023-11-12 02:08:01,165 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:08:01,165 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 62 [2023-11-12 02:08:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:08:01,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029636053] [2023-11-12 02:08:01,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769976222] [2023-11-12 02:08:01,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769976222] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:01,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:08:01,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2023-11-12 02:08:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465945001] [2023-11-12 02:08:01,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:01,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:08:01,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:01,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:08:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=164, Unknown=6, NotChecked=26, Total=240 [2023-11-12 02:08:01,667 INFO L87 Difference]: Start difference. First operand 151 states and 219 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:02,663 INFO L93 Difference]: Finished difference Result 381 states and 549 transitions. [2023-11-12 02:08:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:08:02,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-11-12 02:08:02,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:02,667 INFO L225 Difference]: With dead ends: 381 [2023-11-12 02:08:02,667 INFO L226 Difference]: Without dead ends: 233 [2023-11-12 02:08:02,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=362, Unknown=6, NotChecked=40, Total=506 [2023-11-12 02:08:02,669 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 381 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:02,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 519 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 540 Invalid, 0 Unknown, 246 Unchecked, 0.7s Time] [2023-11-12 02:08:02,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-12 02:08:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 197. [2023-11-12 02:08:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 178 states have (on average 1.398876404494382) internal successors, (249), 178 states have internal predecessors, (249), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:08:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 283 transitions. [2023-11-12 02:08:02,694 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 283 transitions. Word has length 141 [2023-11-12 02:08:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:02,696 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 283 transitions. [2023-11-12 02:08:02,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 283 transitions. [2023-11-12 02:08:02,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-12 02:08:02,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:02,702 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:02,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:02,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:08:02,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:02,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:02,913 INFO L85 PathProgramCache]: Analyzing trace with hash -945216337, now seen corresponding path program 1 times [2023-11-12 02:08:02,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:02,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407312357] [2023-11-12 02:08:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:02,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:02,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:02,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657904251] [2023-11-12 02:08:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:02,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:02,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:02,979 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:02,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:08:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:03,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 02:08:03,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:04,203 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 17 treesize of output 17 [2023-11-12 02:08:04,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:04,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:04,349 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 02:08:04,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 35 [2023-11-12 02:08:04,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:04,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:04,457 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 02:08:04,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 35 [2023-11-12 02:08:04,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:04,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:04,485 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 02:08:04,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 35 [2023-11-12 02:08:04,574 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:08:04,574 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 48 [2023-11-12 02:08:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:08:04,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:04,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:04,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407312357] [2023-11-12 02:08:04,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:04,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657904251] [2023-11-12 02:08:04,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657904251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:04,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:04,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:08:04,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505941055] [2023-11-12 02:08:04,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:04,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:08:04,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:04,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:08:04,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:08:04,618 INFO L87 Difference]: Start difference. First operand 197 states and 283 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:05,779 INFO L93 Difference]: Finished difference Result 488 states and 694 transitions. [2023-11-12 02:08:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:05,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-11-12 02:08:05,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:05,783 INFO L225 Difference]: With dead ends: 488 [2023-11-12 02:08:05,783 INFO L226 Difference]: Without dead ends: 294 [2023-11-12 02:08:05,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:08:05,785 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 258 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:05,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 604 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:08:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-12 02:08:05,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 211. [2023-11-12 02:08:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 192 states have (on average 1.3958333333333333) internal successors, (268), 192 states have internal predecessors, (268), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:08:05,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 302 transitions. [2023-11-12 02:08:05,802 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 302 transitions. Word has length 141 [2023-11-12 02:08:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:05,803 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 302 transitions. [2023-11-12 02:08:05,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:05,803 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 302 transitions. [2023-11-12 02:08:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-12 02:08:05,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:05,806 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:05,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:06,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:08:06,013 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:06,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:06,014 INFO L85 PathProgramCache]: Analyzing trace with hash -665293679, now seen corresponding path program 1 times [2023-11-12 02:08:06,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:06,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758890880] [2023-11-12 02:08:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:06,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:06,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:06,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769638458] [2023-11-12 02:08:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:06,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:06,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:06,052 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:06,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:08:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:06,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:08:06,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:07,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:07,546 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 19 treesize of output 14 [2023-11-12 02:08:07,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:07,600 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 19 treesize of output 14 [2023-11-12 02:08:07,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:07,684 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 19 treesize of output 14 [2023-11-12 02:08:07,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:07,699 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 19 treesize of output 14 [2023-11-12 02:08:07,727 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 10 [2023-11-12 02:08:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:08:07,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:07,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:07,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758890880] [2023-11-12 02:08:07,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:07,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769638458] [2023-11-12 02:08:07,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769638458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:07,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:07,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:08:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827456335] [2023-11-12 02:08:07,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:07,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:08:07,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:07,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:08:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:08:07,756 INFO L87 Difference]: Start difference. First operand 211 states and 302 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:08,795 INFO L93 Difference]: Finished difference Result 490 states and 695 transitions. [2023-11-12 02:08:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:08,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-11-12 02:08:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:08,800 INFO L225 Difference]: With dead ends: 490 [2023-11-12 02:08:08,801 INFO L226 Difference]: Without dead ends: 282 [2023-11-12 02:08:08,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:08:08,802 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 331 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:08,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 481 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:08:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-12 02:08:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 187. [2023-11-12 02:08:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 168 states have (on average 1.375) internal successors, (231), 168 states have internal predecessors, (231), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:08:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 265 transitions. [2023-11-12 02:08:08,821 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 265 transitions. Word has length 143 [2023-11-12 02:08:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:08,822 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 265 transitions. [2023-11-12 02:08:08,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 265 transitions. [2023-11-12 02:08:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-12 02:08:08,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:08,825 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:08,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:09,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:09,033 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:09,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash -984559895, now seen corresponding path program 1 times [2023-11-12 02:08:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:09,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981559930] [2023-11-12 02:08:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:09,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:09,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783765230] [2023-11-12 02:08:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:09,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:09,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:09,088 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:09,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:08:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:09,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 02:08:09,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:10,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 17 treesize of output 17 [2023-11-12 02:08:10,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:10,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:10,675 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 02:08:10,675 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 33 [2023-11-12 02:08:10,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:10,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:10,810 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 02:08:10,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 33 [2023-11-12 02:08:10,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:10,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:10,839 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 02:08:10,839 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 33 [2023-11-12 02:08:10,934 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:08:10,934 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 46 [2023-11-12 02:08:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:08:10,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:10,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:10,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981559930] [2023-11-12 02:08:10,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:10,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783765230] [2023-11-12 02:08:10,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783765230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:10,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:10,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:10,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841983181] [2023-11-12 02:08:10,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:10,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:08:10,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:10,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:08:10,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:10,969 INFO L87 Difference]: Start difference. First operand 187 states and 265 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:11,846 INFO L93 Difference]: Finished difference Result 445 states and 626 transitions. [2023-11-12 02:08:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:11,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-11-12 02:08:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:11,850 INFO L225 Difference]: With dead ends: 445 [2023-11-12 02:08:11,850 INFO L226 Difference]: Without dead ends: 261 [2023-11-12 02:08:11,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:08:11,851 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 331 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:11,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 447 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:08:11,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-12 02:08:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 201. [2023-11-12 02:08:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 182 states have (on average 1.3736263736263736) internal successors, (250), 182 states have internal predecessors, (250), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:08:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 284 transitions. [2023-11-12 02:08:11,869 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 284 transitions. Word has length 143 [2023-11-12 02:08:11,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:11,870 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 284 transitions. [2023-11-12 02:08:11,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:11,870 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 284 transitions. [2023-11-12 02:08:11,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-12 02:08:11,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:11,873 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:11,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:12,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:08:12,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:12,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1020201027, now seen corresponding path program 1 times [2023-11-12 02:08:12,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:12,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127827453] [2023-11-12 02:08:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:12,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:12,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:12,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826854589] [2023-11-12 02:08:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:12,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:12,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:12,122 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:12,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:08:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:12,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-12 02:08:12,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:13,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:13,227 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 19 treesize of output 19 [2023-11-12 02:08:13,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:13,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:13,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:13,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-11-12 02:08:13,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:13,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:13,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:13,381 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-11-12 02:08:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-12 02:08:13,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:13,610 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1156 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_~#float_Array_0~0.base| v_ArrVal_1156))) (= (mod (select (select .cse0 |c_~#unsigned_char_Array_0~0.base|) (+ |c_~#unsigned_char_Array_0~0.offset| 2)) 256) (select (select .cse0 |c_~#signed_long_int_Array_0~0.base|) |c_~#signed_long_int_Array_0~0.offset|)))) is different from false [2023-11-12 02:08:13,679 INFO L322 Elim1Store]: treesize reduction 21, result has 61.1 percent of original size [2023-11-12 02:08:13,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 54 [2023-11-12 02:08:13,703 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:08:13,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 101 [2023-11-12 02:08:13,726 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:08:13,727 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 60 [2023-11-12 02:08:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:08:14,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:14,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127827453] [2023-11-12 02:08:14,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:14,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826854589] [2023-11-12 02:08:14,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826854589] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:14,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:08:14,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2023-11-12 02:08:14,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836006814] [2023-11-12 02:08:14,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:14,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:08:14,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:14,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:08:14,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=172, Unknown=1, NotChecked=26, Total=240 [2023-11-12 02:08:14,185 INFO L87 Difference]: Start difference. First operand 201 states and 284 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:15,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:15,126 INFO L93 Difference]: Finished difference Result 487 states and 687 transitions. [2023-11-12 02:08:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:08:15,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-11-12 02:08:15,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:15,138 INFO L225 Difference]: With dead ends: 487 [2023-11-12 02:08:15,139 INFO L226 Difference]: Without dead ends: 289 [2023-11-12 02:08:15,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=406, Unknown=1, NotChecked=42, Total=552 [2023-11-12 02:08:15,144 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 277 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:15,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 595 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 619 Invalid, 0 Unknown, 243 Unchecked, 0.7s Time] [2023-11-12 02:08:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-12 02:08:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 251. [2023-11-12 02:08:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 232 states have (on average 1.3836206896551724) internal successors, (321), 232 states have internal predecessors, (321), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:08:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 355 transitions. [2023-11-12 02:08:15,167 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 355 transitions. Word has length 143 [2023-11-12 02:08:15,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:15,168 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 355 transitions. [2023-11-12 02:08:15,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:15,169 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 355 transitions. [2023-11-12 02:08:15,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-12 02:08:15,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:15,172 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:15,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:15,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:08:15,381 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:15,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:15,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1504699082, now seen corresponding path program 1 times [2023-11-12 02:08:15,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:15,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939345177] [2023-11-12 02:08:15,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:15,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:15,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:15,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562367292] [2023-11-12 02:08:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:15,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:15,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:15,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:15,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:08:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:15,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:08:15,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:15,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 10 [2023-11-12 02:08:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:08:15,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939345177] [2023-11-12 02:08:15,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562367292] [2023-11-12 02:08:15,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562367292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:15,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:15,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:15,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264505635] [2023-11-12 02:08:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:15,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:15,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:15,910 INFO L87 Difference]: Start difference. First operand 251 states and 355 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:16,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:16,168 INFO L93 Difference]: Finished difference Result 511 states and 726 transitions. [2023-11-12 02:08:16,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:08:16,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 144 [2023-11-12 02:08:16,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:16,172 INFO L225 Difference]: With dead ends: 511 [2023-11-12 02:08:16,172 INFO L226 Difference]: Without dead ends: 263 [2023-11-12 02:08:16,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:16,174 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 21 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:16,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 532 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:08:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-12 02:08:16,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 254. [2023-11-12 02:08:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 235 states have (on average 1.3829787234042554) internal successors, (325), 235 states have internal predecessors, (325), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:08:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 359 transitions. [2023-11-12 02:08:16,192 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 359 transitions. Word has length 144 [2023-11-12 02:08:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:16,193 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 359 transitions. [2023-11-12 02:08:16,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 359 transitions. [2023-11-12 02:08:16,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-12 02:08:16,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:16,196 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:16,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-12 02:08:16,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 02:08:16,404 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:16,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:16,404 INFO L85 PathProgramCache]: Analyzing trace with hash -627441079, now seen corresponding path program 1 times [2023-11-12 02:08:16,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:16,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654521010] [2023-11-12 02:08:16,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:16,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:16,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:16,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945697322] [2023-11-12 02:08:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:16,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:16,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:16,445 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:16,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 02:08:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:16,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:08:16,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:17,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:17,296 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 18 treesize of output 13 [2023-11-12 02:08:17,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2023-11-12 02:08:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:08:17,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:17,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:17,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654521010] [2023-11-12 02:08:17,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:17,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945697322] [2023-11-12 02:08:17,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945697322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:17,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455889990] [2023-11-12 02:08:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:17,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:17,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:17,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:17,348 INFO L87 Difference]: Start difference. First operand 254 states and 359 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:17,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:17,768 INFO L93 Difference]: Finished difference Result 478 states and 676 transitions. [2023-11-12 02:08:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:17,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 144 [2023-11-12 02:08:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:17,772 INFO L225 Difference]: With dead ends: 478 [2023-11-12 02:08:17,772 INFO L226 Difference]: Without dead ends: 227 [2023-11-12 02:08:17,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:17,774 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 105 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:17,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 377 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:08:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-12 02:08:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2023-11-12 02:08:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 206 states have (on average 1.3737864077669903) internal successors, (283), 206 states have internal predecessors, (283), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:08:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 317 transitions. [2023-11-12 02:08:17,790 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 317 transitions. Word has length 144 [2023-11-12 02:08:17,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:17,791 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 317 transitions. [2023-11-12 02:08:17,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:17,792 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 317 transitions. [2023-11-12 02:08:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-12 02:08:17,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:17,794 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:17,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-12 02:08:18,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 02:08:18,002 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:18,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash 230881975, now seen corresponding path program 1 times [2023-11-12 02:08:18,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:18,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369754932] [2023-11-12 02:08:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:18,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:18,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:18,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313761199] [2023-11-12 02:08:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:18,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:18,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:18,052 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:18,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-12 02:08:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:18,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-12 02:08:18,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:18,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 12 [2023-11-12 02:08:19,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:19,161 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 17 treesize of output 12 [2023-11-12 02:08:19,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:19,285 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 17 treesize of output 12 [2023-11-12 02:08:19,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:19,408 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 17 treesize of output 12 [2023-11-12 02:08:19,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:19,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:19,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:19,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-12 02:08:19,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:19,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:19,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:19,893 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:08:19,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 20 [2023-11-12 02:08:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 282 proven. 27 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-12 02:08:19,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:20,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:20,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369754932] [2023-11-12 02:08:20,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:20,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313761199] [2023-11-12 02:08:20,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313761199] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:20,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:08:20,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-12 02:08:20,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822605098] [2023-11-12 02:08:20,700 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:20,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:08:20,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:08:20,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:08:20,703 INFO L87 Difference]: Start difference. First operand 225 states and 317 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-12 02:08:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:22,347 INFO L93 Difference]: Finished difference Result 466 states and 651 transitions. [2023-11-12 02:08:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 02:08:22,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 145 [2023-11-12 02:08:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:22,351 INFO L225 Difference]: With dead ends: 466 [2023-11-12 02:08:22,351 INFO L226 Difference]: Without dead ends: 244 [2023-11-12 02:08:22,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2023-11-12 02:08:22,353 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 139 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:22,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 716 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:08:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-12 02:08:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 232. [2023-11-12 02:08:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 212 states have (on average 1.3679245283018868) internal successors, (290), 212 states have internal predecessors, (290), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:08:22,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 324 transitions. [2023-11-12 02:08:22,372 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 324 transitions. Word has length 145 [2023-11-12 02:08:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:22,373 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 324 transitions. [2023-11-12 02:08:22,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-12 02:08:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 324 transitions. [2023-11-12 02:08:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-12 02:08:22,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:22,375 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:22,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:22,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 02:08:22,584 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:22,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash -586766475, now seen corresponding path program 1 times [2023-11-12 02:08:22,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:22,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987046705] [2023-11-12 02:08:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:22,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:22,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:22,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517081037] [2023-11-12 02:08:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:22,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:22,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:22,624 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:22,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-12 02:08:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:22,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:08:22,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:22,972 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-11-12 02:08:24,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:24,838 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 132 treesize of output 103 [2023-11-12 02:08:26,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:26,074 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 132 treesize of output 103 [2023-11-12 02:08:26,573 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:08:26,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 66 [2023-11-12 02:08:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:08:27,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:27,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:27,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987046705] [2023-11-12 02:08:27,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517081037] [2023-11-12 02:08:27,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517081037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:27,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:27,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:08:27,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214108633] [2023-11-12 02:08:27,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:27,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:08:27,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:08:27,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:08:27,307 INFO L87 Difference]: Start difference. First operand 232 states and 324 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:32,143 INFO L93 Difference]: Finished difference Result 786 states and 1096 transitions. [2023-11-12 02:08:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:08:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-11-12 02:08:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:32,147 INFO L225 Difference]: With dead ends: 786 [2023-11-12 02:08:32,147 INFO L226 Difference]: Without dead ends: 557 [2023-11-12 02:08:32,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:08:32,149 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 284 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:32,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 548 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-12 02:08:32,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-12 02:08:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 323. [2023-11-12 02:08:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 284 states have (on average 1.352112676056338) internal successors, (384), 284 states have internal predecessors, (384), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-12 02:08:32,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 452 transitions. [2023-11-12 02:08:32,179 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 452 transitions. Word has length 145 [2023-11-12 02:08:32,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:32,180 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 452 transitions. [2023-11-12 02:08:32,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:32,180 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 452 transitions. [2023-11-12 02:08:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-12 02:08:32,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:32,182 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:32,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:32,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:08:32,389 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:32,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:32,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2075803523, now seen corresponding path program 1 times [2023-11-12 02:08:32,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:32,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976197920] [2023-11-12 02:08:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:32,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:32,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:32,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128247215] [2023-11-12 02:08:32,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:32,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:32,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:32,421 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:32,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-12 02:08:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:32,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:08:32,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:32,772 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 10 [2023-11-12 02:08:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-12 02:08:32,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976197920] [2023-11-12 02:08:32,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128247215] [2023-11-12 02:08:32,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128247215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:32,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:32,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:32,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138558685] [2023-11-12 02:08:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:32,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:32,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:32,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:32,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:32,785 INFO L87 Difference]: Start difference. First operand 323 states and 452 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:33,076 INFO L93 Difference]: Finished difference Result 612 states and 852 transitions. [2023-11-12 02:08:33,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:33,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2023-11-12 02:08:33,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:33,081 INFO L225 Difference]: With dead ends: 612 [2023-11-12 02:08:33,081 INFO L226 Difference]: Without dead ends: 383 [2023-11-12 02:08:33,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:33,083 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 111 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:33,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 552 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:08:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-12 02:08:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 302. [2023-11-12 02:08:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 263 states have (on average 1.338403041825095) internal successors, (352), 263 states have internal predecessors, (352), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-12 02:08:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 420 transitions. [2023-11-12 02:08:33,117 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 420 transitions. Word has length 145 [2023-11-12 02:08:33,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:33,118 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 420 transitions. [2023-11-12 02:08:33,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-12 02:08:33,119 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 420 transitions. [2023-11-12 02:08:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-12 02:08:33,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:33,120 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:33,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:33,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:08:33,327 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:33,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1072175290, now seen corresponding path program 1 times [2023-11-12 02:08:33,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:33,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341486106] [2023-11-12 02:08:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:33,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:33,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:33,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252994951] [2023-11-12 02:08:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:33,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:33,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:33,369 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:33,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3292e96-6b7a-440a-80fb-62ec5a19547e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-12 02:08:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:33,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:08:33,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:34,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:34,026 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 19 treesize of output 19