./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-43.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-43.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43b372034270d68248df64e3ba01a276e97f56dfff9779bc642c48fe7de17952 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:22,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:22,304 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:37:22,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:22,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:22,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:22,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:22,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:22,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:22,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:22,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:22,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:22,345 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:22,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:22,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:22,347 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:22,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:22,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:22,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:22,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:22,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:22,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:22,352 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:22,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:22,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:22,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:22,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:22,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:22,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:22,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:22,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:22,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:22,357 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:22,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:22,358 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:22,358 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:22,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:22,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:22,359 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:22,361 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_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b372034270d68248df64e3ba01a276e97f56dfff9779bc642c48fe7de17952 [2023-11-19 07:37:22,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:22,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:22,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:22,725 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:22,725 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:22,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-43.i [2023-11-19 07:37:25,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:26,146 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:26,147 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-43.i [2023-11-19 07:37:26,167 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/data/078bad4f3/e796bdef93164b88a3d7f1f142a5840d/FLAG1a0650d05 [2023-11-19 07:37:26,181 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/data/078bad4f3/e796bdef93164b88a3d7f1f142a5840d [2023-11-19 07:37:26,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:26,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:26,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:26,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:26,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:26,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d7c290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26, skipping insertion in model container [2023-11-19 07:37:26,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,245 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:26,428 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_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-43.i[917,930] [2023-11-19 07:37:26,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:26,560 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:26,574 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_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-43.i[917,930] [2023-11-19 07:37:26,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:26,640 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:26,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26 WrapperNode [2023-11-19 07:37:26,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:26,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:26,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:26,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:26,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,728 INFO L138 Inliner]: procedures = 29, calls = 181, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 517 [2023-11-19 07:37:26,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:26,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:26,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:26,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:26,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,812 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:26,813 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:26,813 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:26,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:26,814 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:26,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:26,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:26,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:37:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:37:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:37:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:37:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 07:37:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:37:26,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:37:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:26,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:27,092 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:27,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:27,760 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:27,770 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:27,770 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:37:27,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:27 BoogieIcfgContainer [2023-11-19 07:37:27,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:27,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:27,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:27,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:27,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:26" (1/3) ... [2023-11-19 07:37:27,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7dfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:27, skipping insertion in model container [2023-11-19 07:37:27,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (2/3) ... [2023-11-19 07:37:27,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7dfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:27, skipping insertion in model container [2023-11-19 07:37:27,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:27" (3/3) ... [2023-11-19 07:37:27,785 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-43.i [2023-11-19 07:37:27,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:27,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:37:27,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:27,871 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;@6972a785, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:27,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:37:27,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 99 states have (on average 1.4444444444444444) internal successors, (143), 100 states have internal predecessors, (143), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:37:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-19 07:37:27,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:27,898 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:27,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:27,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1707601607, now seen corresponding path program 1 times [2023-11-19 07:37:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:27,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931899949] [2023-11-19 07:37:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:27,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:28,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:28,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183155883] [2023-11-19 07:37:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:28,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:28,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:28,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:28,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:37:28,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:37:28,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:28,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931899949] [2023-11-19 07:37:28,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183155883] [2023-11-19 07:37:28,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183155883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:28,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:28,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:28,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849638949] [2023-11-19 07:37:28,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:28,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:28,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:28,906 INFO L87 Difference]: Start difference. First operand has 122 states, 99 states have (on average 1.4444444444444444) internal successors, (143), 100 states have internal predecessors, (143), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:37:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:28,992 INFO L93 Difference]: Finished difference Result 249 states and 397 transitions. [2023-11-19 07:37:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2023-11-19 07:37:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:29,007 INFO L225 Difference]: With dead ends: 249 [2023-11-19 07:37:29,008 INFO L226 Difference]: Without dead ends: 130 [2023-11-19 07:37:29,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:29,016 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 21 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:29,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 515 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:29,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-19 07:37:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2023-11-19 07:37:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 98 states have internal predecessors, (138), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:37:29,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2023-11-19 07:37:29,078 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 168 [2023-11-19 07:37:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:29,081 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2023-11-19 07:37:29,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:37:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2023-11-19 07:37:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-19 07:37:29,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:29,087 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:29,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:29,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:37:29,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:29,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:29,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1907307319, now seen corresponding path program 1 times [2023-11-19 07:37:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:29,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981683283] [2023-11-19 07:37:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:29,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:29,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:29,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281531531] [2023-11-19 07:37:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:29,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:29,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:29,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:29,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:37:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:29,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:37:29,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:37:29,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:29,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:29,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981683283] [2023-11-19 07:37:29,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:29,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281531531] [2023-11-19 07:37:29,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281531531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:29,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:29,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934440566] [2023-11-19 07:37:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:29,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:29,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:29,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:29,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:29,875 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:37:29,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:29,927 INFO L93 Difference]: Finished difference Result 245 states and 364 transitions. [2023-11-19 07:37:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:29,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2023-11-19 07:37:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:29,932 INFO L225 Difference]: With dead ends: 245 [2023-11-19 07:37:29,933 INFO L226 Difference]: Without dead ends: 128 [2023-11-19 07:37:29,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:29,936 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 12 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:29,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 513 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:29,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-19 07:37:29,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2023-11-19 07:37:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.4) internal successors, (140), 100 states have internal predecessors, (140), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:37:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 180 transitions. [2023-11-19 07:37:29,957 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 180 transitions. Word has length 168 [2023-11-19 07:37:29,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:29,959 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 180 transitions. [2023-11-19 07:37:29,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:37:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 180 transitions. [2023-11-19 07:37:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-19 07:37:29,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:29,963 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:29,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:30,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:30,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:30,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash -132299957, now seen corresponding path program 1 times [2023-11-19 07:37:30,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:30,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504025357] [2023-11-19 07:37:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:30,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:30,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:30,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989910520] [2023-11-19 07:37:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:30,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:30,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:30,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:30,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:37:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:30,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:37:30,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:37:30,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:30,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:30,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504025357] [2023-11-19 07:37:30,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:30,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989910520] [2023-11-19 07:37:30,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989910520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:30,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:30,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704997942] [2023-11-19 07:37:30,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:30,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:30,631 INFO L87 Difference]: Start difference. First operand 122 states and 180 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:37:30,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:30,683 INFO L93 Difference]: Finished difference Result 245 states and 362 transitions. [2023-11-19 07:37:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:30,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2023-11-19 07:37:30,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:30,690 INFO L225 Difference]: With dead ends: 245 [2023-11-19 07:37:30,690 INFO L226 Difference]: Without dead ends: 126 [2023-11-19 07:37:30,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:30,698 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 3 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:30,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 512 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:30,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-19 07:37:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2023-11-19 07:37:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 102 states have (on average 1.392156862745098) internal successors, (142), 102 states have internal predecessors, (142), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:37:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2023-11-19 07:37:30,733 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 168 [2023-11-19 07:37:30,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:30,734 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2023-11-19 07:37:30,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:37:30,735 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2023-11-19 07:37:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-19 07:37:30,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:30,738 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:30,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:30,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:30,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:30,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:30,940 INFO L85 PathProgramCache]: Analyzing trace with hash -130452915, now seen corresponding path program 1 times [2023-11-19 07:37:30,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:30,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177698826] [2023-11-19 07:37:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:30,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:31,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:31,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006035141] [2023-11-19 07:37:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:31,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:31,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:31,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:31,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:37:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:31,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-19 07:37:31,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:33,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 16 treesize of output 16 [2023-11-19 07:37:33,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:37:33,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:37:33,285 INFO L378 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 15 treesize of output 15 [2023-11-19 07:37:33,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:33,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:33,322 INFO L378 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 20 treesize of output 18 [2023-11-19 07:37:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 07:37:33,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:33,548 WARN L854 $PredicateComparison]: unable to prove that (forall ((~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.offset Int) (v_ArrVal_550 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.base (store (select |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.base) ~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.offset (select (select |c_#memory_int| c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.offset))) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base v_ArrVal_550))) (= (select (select .cse0 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.base) ~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.offset) (select (select .cse0 c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.offset)))) is different from false [2023-11-19 07:37:33,576 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_548 (Array Int Int)) (~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.offset Int) (v_ArrVal_550 (Array Int Int))) (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var2_Pointer~0.base v_ArrVal_548))) (store .cse1 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.base (store (select .cse1 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.base) ~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.offset (select (select .cse1 c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.offset)))) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base v_ArrVal_550))) (= (select (select .cse0 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.base) ~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.offset) (select (select .cse0 c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.base) c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.offset)))) is different from false [2023-11-19 07:37:33,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:37:33,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 86 [2023-11-19 07:37:33,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:37:33,794 INFO L378 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 57126 treesize of output 55678 [2023-11-19 07:37:34,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2126 treesize of output 2030 [2023-11-19 07:37:34,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:37:34,419 INFO L378 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 1994 treesize of output 1738 [2023-11-19 07:37:34,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1753 treesize of output 1701 [2023-11-19 07:37:34,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2023-11-19 07:37:35,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 831 treesize of output 823 [2023-11-19 07:37:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:37:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177698826] [2023-11-19 07:37:37,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006035141] [2023-11-19 07:37:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006035141] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:37,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:37,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-19 07:37:37,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874081610] [2023-11-19 07:37:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:37,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:37:37,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:37:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=218, Unknown=5, NotChecked=62, Total=342 [2023-11-19 07:37:37,213 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:37:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:37,866 INFO L93 Difference]: Finished difference Result 315 states and 459 transitions. [2023-11-19 07:37:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:37:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2023-11-19 07:37:37,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:37,870 INFO L225 Difference]: With dead ends: 315 [2023-11-19 07:37:37,870 INFO L226 Difference]: Without dead ends: 194 [2023-11-19 07:37:37,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=405, Unknown=5, NotChecked=86, Total=600 [2023-11-19 07:37:37,873 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 384 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:37,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 814 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 288 Invalid, 0 Unknown, 512 Unchecked, 0.4s Time] [2023-11-19 07:37:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-19 07:37:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 132. [2023-11-19 07:37:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 110 states have internal predecessors, (153), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:37:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 193 transitions. [2023-11-19 07:37:37,890 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 193 transitions. Word has length 168 [2023-11-19 07:37:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:37,891 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 193 transitions. [2023-11-19 07:37:37,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:37:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 193 transitions. [2023-11-19 07:37:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-19 07:37:37,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:37,895 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:37,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:38,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:38,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:38,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1151521269, now seen corresponding path program 1 times [2023-11-19 07:37:38,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:38,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934589219] [2023-11-19 07:37:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:38,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:38,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478771749] [2023-11-19 07:37:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:38,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:38,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:38,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:37:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:38,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-19 07:37:38,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:40,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:37:41,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:41,099 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:41,301 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:41,449 INFO L378 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-11-19 07:37:41,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:41,460 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:41,496 INFO L378 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 15 treesize of output 7 [2023-11-19 07:37:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 1 proven. 387 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-11-19 07:37:41,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934589219] [2023-11-19 07:37:41,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:41,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478771749] [2023-11-19 07:37:41,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478771749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:41,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:37:41,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149906050] [2023-11-19 07:37:41,602 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:41,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:37:41,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:37:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=162, Unknown=2, NotChecked=0, Total=210 [2023-11-19 07:37:41,604 INFO L87 Difference]: Start difference. First operand 132 states and 193 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 10 states have internal predecessors, (83), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-19 07:37:42,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:42,541 INFO L93 Difference]: Finished difference Result 283 states and 412 transitions. [2023-11-19 07:37:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:37:42,543 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 10 states have internal predecessors, (83), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 168 [2023-11-19 07:37:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:42,545 INFO L225 Difference]: With dead ends: 283 [2023-11-19 07:37:42,545 INFO L226 Difference]: Without dead ends: 154 [2023-11-19 07:37:42,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=449, Unknown=2, NotChecked=0, Total=600 [2023-11-19 07:37:42,547 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 182 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:42,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 627 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:37:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-19 07:37:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 138. [2023-11-19 07:37:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 115 states have (on average 1.373913043478261) internal successors, (158), 115 states have internal predecessors, (158), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:37:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 198 transitions. [2023-11-19 07:37:42,576 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 198 transitions. Word has length 168 [2023-11-19 07:37:42,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:42,577 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 198 transitions. [2023-11-19 07:37:42,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 10 states have internal predecessors, (83), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-19 07:37:42,577 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 198 transitions. [2023-11-19 07:37:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:37:42,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:42,580 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:42,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:42,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:42,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:42,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1708934240, now seen corresponding path program 1 times [2023-11-19 07:37:42,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:42,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119967940] [2023-11-19 07:37:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:42,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:42,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704840531] [2023-11-19 07:37:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:42,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:42,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,860 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:37:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:43,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 07:37:43,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:45,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:37:46,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:46,017 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:46,261 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:46,458 INFO L378 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-11-19 07:37:46,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:46,464 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:46,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:46,512 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:46,534 INFO L378 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 15 treesize of output 7 [2023-11-19 07:37:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 1 proven. 387 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-11-19 07:37:46,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:46,611 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_844 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_844) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var3_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var3_Pointer~0.offset))) is different from false [2023-11-19 07:37:46,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:46,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119967940] [2023-11-19 07:37:46,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:46,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704840531] [2023-11-19 07:37:46,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704840531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:46,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:46,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 07:37:46,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561790709] [2023-11-19 07:37:46,688 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:46,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:37:46,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:46,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:37:46,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=182, Unknown=7, NotChecked=28, Total=272 [2023-11-19 07:37:46,690 INFO L87 Difference]: Start difference. First operand 138 states and 198 transitions. Second operand has 13 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-19 07:37:47,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:47,658 INFO L93 Difference]: Finished difference Result 285 states and 409 transitions. [2023-11-19 07:37:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:37:47,662 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 169 [2023-11-19 07:37:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:47,665 INFO L225 Difference]: With dead ends: 285 [2023-11-19 07:37:47,665 INFO L226 Difference]: Without dead ends: 150 [2023-11-19 07:37:47,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=483, Unknown=7, NotChecked=48, Total=702 [2023-11-19 07:37:47,667 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 177 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:47,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 656 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:37:47,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-19 07:37:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2023-11-19 07:37:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.3716814159292035) internal successors, (155), 113 states have internal predecessors, (155), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:37:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 195 transitions. [2023-11-19 07:37:47,684 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 195 transitions. Word has length 169 [2023-11-19 07:37:47,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:47,685 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 195 transitions. [2023-11-19 07:37:47,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-19 07:37:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 195 transitions. [2023-11-19 07:37:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:37:47,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:47,692 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:47,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:47,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:47,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:47,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:47,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1822240577, now seen corresponding path program 1 times [2023-11-19 07:37:47,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:47,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252026144] [2023-11-19 07:37:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:47,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:47,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:47,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017534431] [2023-11-19 07:37:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:47,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:47,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:47,956 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:48,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:37:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:48,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 07:37:48,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:50,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:37:50,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:50,653 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:50,817 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:50,968 INFO L378 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-11-19 07:37:50,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:50,972 INFO L378 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 16 treesize of output 11 [2023-11-19 07:37:51,002 INFO L378 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 15 treesize of output 7 [2023-11-19 07:37:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 1 proven. 387 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-11-19 07:37:51,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:51,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:51,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252026144] [2023-11-19 07:37:51,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:51,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017534431] [2023-11-19 07:37:51,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017534431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:51,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 07:37:51,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595121549] [2023-11-19 07:37:51,183 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:51,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:37:51,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:37:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=275, Unknown=11, NotChecked=0, Total=342 [2023-11-19 07:37:51,185 INFO L87 Difference]: Start difference. First operand 136 states and 195 transitions. Second operand has 14 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-19 07:37:52,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:52,136 INFO L93 Difference]: Finished difference Result 299 states and 429 transitions. [2023-11-19 07:37:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:37:52,137 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 169 [2023-11-19 07:37:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:52,139 INFO L225 Difference]: With dead ends: 299 [2023-11-19 07:37:52,139 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 07:37:52,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=786, Unknown=11, NotChecked=0, Total=992 [2023-11-19 07:37:52,141 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 203 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:52,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 902 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:37:52,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 07:37:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 141. [2023-11-19 07:37:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 118 states have (on average 1.3644067796610169) internal successors, (161), 118 states have internal predecessors, (161), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:37:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 201 transitions. [2023-11-19 07:37:52,157 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 201 transitions. Word has length 169 [2023-11-19 07:37:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:52,158 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 201 transitions. [2023-11-19 07:37:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-19 07:37:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 201 transitions. [2023-11-19 07:37:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:37:52,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:52,161 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:52,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:52,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:52,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:52,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1681691967, now seen corresponding path program 1 times [2023-11-19 07:37:52,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:52,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323175638] [2023-11-19 07:37:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:52,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:52,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824771148] [2023-11-19 07:37:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:52,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:52,435 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:52,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:37:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:52,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-19 07:37:52,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:52,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:37:53,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:53,510 INFO L378 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 [2023-11-19 07:37:53,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:53,794 INFO L378 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 [2023-11-19 07:37:54,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:54,104 INFO L378 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 [2023-11-19 07:37:54,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:54,374 INFO L378 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 [2023-11-19 07:37:54,661 INFO L378 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 [2023-11-19 07:37:55,000 INFO L378 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 [2023-11-19 07:37:55,262 INFO L378 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 [2023-11-19 07:37:55,541 INFO L378 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 [2023-11-19 07:37:55,800 INFO L378 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 [2023-11-19 07:37:56,037 INFO L378 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 [2023-11-19 07:37:56,256 INFO L378 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 [2023-11-19 07:37:56,421 INFO L378 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2023-11-19 07:37:56,431 INFO L378 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 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-19 07:37:56,447 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:37:56,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 20 [2023-11-19 07:37:56,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-19 07:37:56,579 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:37:56,579 INFO L378 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 28 treesize of output 12 [2023-11-19 07:37:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 621 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-19 07:37:56,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:56,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323175638] [2023-11-19 07:37:56,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:56,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824771148] [2023-11-19 07:37:56,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824771148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:56,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:56,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-19 07:37:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664172603] [2023-11-19 07:37:56,761 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:37:56,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:37:56,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:37:56,763 INFO L87 Difference]: Start difference. First operand 141 states and 201 transitions. Second operand has 15 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 8 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-19 07:37:58,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:58,089 INFO L93 Difference]: Finished difference Result 298 states and 423 transitions. [2023-11-19 07:37:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:37:58,090 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 8 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) Word has length 169 [2023-11-19 07:37:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:58,092 INFO L225 Difference]: With dead ends: 298 [2023-11-19 07:37:58,092 INFO L226 Difference]: Without dead ends: 160 [2023-11-19 07:37:58,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-11-19 07:37:58,094 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 305 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:58,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 709 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:37:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-19 07:37:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2023-11-19 07:37:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 128 states have (on average 1.3671875) internal successors, (175), 128 states have internal predecessors, (175), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:37:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 215 transitions. [2023-11-19 07:37:58,123 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 215 transitions. Word has length 169 [2023-11-19 07:37:58,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:58,128 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 215 transitions. [2023-11-19 07:37:58,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 8 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-19 07:37:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 215 transitions. [2023-11-19 07:37:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:37:58,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:58,131 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:58,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:58,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:58,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:58,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:58,345 INFO L85 PathProgramCache]: Analyzing trace with hash -237921787, now seen corresponding path program 1 times [2023-11-19 07:37:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:58,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039291750] [2023-11-19 07:37:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:58,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:58,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553370425] [2023-11-19 07:37:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:58,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:58,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:58,392 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:58,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:37:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:58,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-19 07:37:58,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:58,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:37:59,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:59,579 INFO L378 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 [2023-11-19 07:37:59,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:59,953 INFO L378 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 [2023-11-19 07:38:00,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:00,289 INFO L378 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 [2023-11-19 07:38:00,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:00,647 INFO L378 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 [2023-11-19 07:38:00,977 INFO L378 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 [2023-11-19 07:38:01,363 INFO L378 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 [2023-11-19 07:38:01,751 INFO L378 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 [2023-11-19 07:38:02,114 INFO L378 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 [2023-11-19 07:38:02,476 INFO L378 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 [2023-11-19 07:38:02,829 INFO L378 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 [2023-11-19 07:38:03,108 INFO L378 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 [2023-11-19 07:38:03,386 INFO L378 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2023-11-19 07:38:03,394 INFO L378 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 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-19 07:38:03,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-19 07:38:03,413 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:38:03,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 20 [2023-11-19 07:38:03,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,591 INFO L378 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 29 treesize of output 20 [2023-11-19 07:38:03,629 INFO L378 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 29 treesize of output 20 [2023-11-19 07:38:03,671 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:38:03,671 INFO L378 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 28 treesize of output 12 [2023-11-19 07:38:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 621 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-19 07:38:03,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:03,752 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1277 (Array Int Int))) (< (mod (select (select (store |c_#memory_int| c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base v_ArrVal_1277) c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base) c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.offset) 256) 1)) is different from false [2023-11-19 07:38:03,763 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1277 (Array Int Int)) (v_ArrVal_1276 (Array Int Int))) (< (mod (select (select (store (store |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.base v_ArrVal_1276) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base v_ArrVal_1277) c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base) c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.offset) 256) 1)) is different from false [2023-11-19 07:38:03,814 WARN L854 $PredicateComparison]: unable to prove that (forall ((~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.offset Int) (~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.offset Int) (v_ArrVal_1274 Int) (v_ArrVal_1277 (Array Int Int)) (v_ArrVal_1276 (Array Int Int))) (< (mod (select (select (store (store (let ((.cse0 (store |c_#memory_int| c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.base) ~signed_char_Array_0_arraysigned_char_Array_0Var0_Pointer~0.offset v_ArrVal_1274)))) (store .cse0 c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base (store (select .cse0 c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base) ~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.offset (select (select .cse0 c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var1_Pointer~0.base) c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var1_Pointer~0.offset)))) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.base v_ArrVal_1276) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base v_ArrVal_1277) c_~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.base) ~BOOL_unsigned_char_Array_0_arrayBOOL_unsigned_char_Array_0Var0_Pointer~0.offset) 256) 1)) is different from false [2023-11-19 07:38:03,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:03,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039291750] [2023-11-19 07:38:03,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:03,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553370425] [2023-11-19 07:38:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553370425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:03,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:38:03,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-19 07:38:03,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733651773] [2023-11-19 07:38:03,833 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:03,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:38:03,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:03,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:38:03,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=250, Unknown=3, NotChecked=102, Total=420 [2023-11-19 07:38:03,835 INFO L87 Difference]: Start difference. First operand 152 states and 215 transitions. Second operand has 17 states, 16 states have (on average 5.8125) internal successors, (93), 15 states have internal predecessors, (93), 8 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-19 07:38:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:05,413 INFO L93 Difference]: Finished difference Result 403 states and 570 transitions. [2023-11-19 07:38:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:38:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.8125) internal successors, (93), 15 states have internal predecessors, (93), 8 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) Word has length 169 [2023-11-19 07:38:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:05,416 INFO L225 Difference]: With dead ends: 403 [2023-11-19 07:38:05,417 INFO L226 Difference]: Without dead ends: 254 [2023-11-19 07:38:05,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=193, Invalid=686, Unknown=3, NotChecked=174, Total=1056 [2023-11-19 07:38:05,418 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 799 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:05,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 733 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:38:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-19 07:38:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 158. [2023-11-19 07:38:05,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 134 states have (on average 1.373134328358209) internal successors, (184), 134 states have internal predecessors, (184), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 224 transitions. [2023-11-19 07:38:05,441 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 224 transitions. Word has length 169 [2023-11-19 07:38:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:05,441 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 224 transitions. [2023-11-19 07:38:05,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.8125) internal successors, (93), 15 states have internal predecessors, (93), 8 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-19 07:38:05,442 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 224 transitions. [2023-11-19 07:38:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:38:05,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:05,444 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:05,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:05,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:05,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:05,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1258990141, now seen corresponding path program 1 times [2023-11-19 07:38:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:05,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476485482] [2023-11-19 07:38:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:05,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:05,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603656976] [2023-11-19 07:38:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:05,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:05,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:05,740 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:05,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:38:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:06,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 07:38:06,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:06,939 INFO L378 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 17 [2023-11-19 07:38:06,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:06,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:06,975 INFO L378 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 22 treesize of output 20 [2023-11-19 07:38:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 07:38:07,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:07,111 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1407 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base v_ArrVal_1407))) (= (select (select .cse0 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var4_Pointer~0.offset) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset) 256)))) is different from false [2023-11-19 07:38:07,149 INFO L349 Elim1Store]: treesize reduction 17, result has 63.0 percent of original size [2023-11-19 07:38:07,149 INFO L378 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 47 treesize of output 48 [2023-11-19 07:38:07,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:38:07,180 INFO L378 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 102 treesize of output 89 [2023-11-19 07:38:07,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:38:07,207 INFO L378 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 [2023-11-19 07:38:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:38:07,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:07,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476485482] [2023-11-19 07:38:07,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:07,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603656976] [2023-11-19 07:38:07,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603656976] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:07,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:38:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-19 07:38:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470383661] [2023-11-19 07:38:07,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:07,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:38:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:38:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=146, Unknown=1, NotChecked=24, Total=210 [2023-11-19 07:38:07,665 INFO L87 Difference]: Start difference. First operand 158 states and 224 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:08,115 INFO L93 Difference]: Finished difference Result 388 states and 550 transitions. [2023-11-19 07:38:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:38:08,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2023-11-19 07:38:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:08,118 INFO L225 Difference]: With dead ends: 388 [2023-11-19 07:38:08,118 INFO L226 Difference]: Without dead ends: 233 [2023-11-19 07:38:08,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=302, Unknown=1, NotChecked=36, Total=420 [2023-11-19 07:38:08,119 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 309 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 259 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:08,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 716 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 259 Unchecked, 0.3s Time] [2023-11-19 07:38:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-19 07:38:08,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 168. [2023-11-19 07:38:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 144 states have (on average 1.3819444444444444) internal successors, (199), 144 states have internal predecessors, (199), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 239 transitions. [2023-11-19 07:38:08,143 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 239 transitions. Word has length 169 [2023-11-19 07:38:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:08,144 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 239 transitions. [2023-11-19 07:38:08,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:08,144 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 239 transitions. [2023-11-19 07:38:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:38:08,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:08,146 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:08,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:08,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:38:08,372 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:08,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash 83968732, now seen corresponding path program 1 times [2023-11-19 07:38:08,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:08,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840195049] [2023-11-19 07:38:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:08,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:08,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:08,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961944004] [2023-11-19 07:38:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:08,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:08,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:08,419 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:08,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:38:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:08,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:38:08,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:09,503 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-11-19 07:38:09,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-11-19 07:38:09,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-19 07:38:09,534 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:38:09,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-19 07:38:09,549 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 07:38:09,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-19 07:38:09,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:09,635 INFO L378 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 [2023-11-19 07:38:09,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:09,655 INFO L378 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 [2023-11-19 07:38:09,702 INFO L378 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 [2023-11-19 07:38:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:38:09,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:09,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840195049] [2023-11-19 07:38:09,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961944004] [2023-11-19 07:38:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961944004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:09,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:38:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126220089] [2023-11-19 07:38:09,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:09,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:09,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:09,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:09,720 INFO L87 Difference]: Start difference. First operand 168 states and 239 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:10,072 INFO L93 Difference]: Finished difference Result 428 states and 607 transitions. [2023-11-19 07:38:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:38:10,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2023-11-19 07:38:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:10,081 INFO L225 Difference]: With dead ends: 428 [2023-11-19 07:38:10,081 INFO L226 Difference]: Without dead ends: 263 [2023-11-19 07:38:10,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:38:10,083 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 345 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:10,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 530 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:38:10,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-19 07:38:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 169. [2023-11-19 07:38:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 145 states have (on average 1.3793103448275863) internal successors, (200), 145 states have internal predecessors, (200), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 240 transitions. [2023-11-19 07:38:10,106 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 240 transitions. Word has length 169 [2023-11-19 07:38:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:10,107 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 240 transitions. [2023-11-19 07:38:10,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 240 transitions. [2023-11-19 07:38:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:38:10,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:10,110 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:10,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:10,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:38:10,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:10,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash -937099622, now seen corresponding path program 1 times [2023-11-19 07:38:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:10,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499335457] [2023-11-19 07:38:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:10,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:10,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543597627] [2023-11-19 07:38:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:10,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:10,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:10,364 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:10,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:38:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:10,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:38:10,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:38:10,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:10,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:10,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499335457] [2023-11-19 07:38:10,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:10,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543597627] [2023-11-19 07:38:10,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543597627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:10,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:10,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:10,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293907634] [2023-11-19 07:38:10,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:10,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:10,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:10,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:10,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:10,717 INFO L87 Difference]: Start difference. First operand 169 states and 240 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:10,773 INFO L93 Difference]: Finished difference Result 363 states and 517 transitions. [2023-11-19 07:38:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2023-11-19 07:38:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:10,776 INFO L225 Difference]: With dead ends: 363 [2023-11-19 07:38:10,776 INFO L226 Difference]: Without dead ends: 197 [2023-11-19 07:38:10,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:10,778 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 70 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 721 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 [2023-11-19 07:38:10,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 721 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-19 07:38:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 170. [2023-11-19 07:38:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 146 states have (on average 1.3767123287671232) internal successors, (201), 146 states have internal predecessors, (201), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 241 transitions. [2023-11-19 07:38:10,807 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 241 transitions. Word has length 169 [2023-11-19 07:38:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:10,808 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 241 transitions. [2023-11-19 07:38:10,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 241 transitions. [2023-11-19 07:38:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:38:10,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:10,811 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:10,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:38:11,024 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:11,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash 47049153, now seen corresponding path program 1 times [2023-11-19 07:38:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:11,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973191048] [2023-11-19 07:38:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:11,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:11,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:11,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900924663] [2023-11-19 07:38:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:11,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:11,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:11,067 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:11,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:38:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:11,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:38:11,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:12,221 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2023-11-19 07:38:12,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2023-11-19 07:38:12,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-19 07:38:12,254 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:38:12,255 INFO L378 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 25 treesize of output 9 [2023-11-19 07:38:12,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-19 07:38:12,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:12,371 INFO L378 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 [2023-11-19 07:38:12,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:12,390 INFO L378 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 [2023-11-19 07:38:12,414 INFO L378 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 [2023-11-19 07:38:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:38:12,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973191048] [2023-11-19 07:38:12,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900924663] [2023-11-19 07:38:12,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900924663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:12,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:12,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:38:12,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210863564] [2023-11-19 07:38:12,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:12,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:12,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:12,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:12,429 INFO L87 Difference]: Start difference. First operand 170 states and 241 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:12,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:12,791 INFO L93 Difference]: Finished difference Result 445 states and 629 transitions. [2023-11-19 07:38:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:38:12,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 169 [2023-11-19 07:38:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:12,795 INFO L225 Difference]: With dead ends: 445 [2023-11-19 07:38:12,795 INFO L226 Difference]: Without dead ends: 277 [2023-11-19 07:38:12,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:38:12,797 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 242 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:12,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 650 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:38:12,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-19 07:38:12,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 179. [2023-11-19 07:38:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 155 states have (on average 1.3741935483870968) internal successors, (213), 155 states have internal predecessors, (213), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 253 transitions. [2023-11-19 07:38:12,820 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 253 transitions. Word has length 169 [2023-11-19 07:38:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:12,820 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 253 transitions. [2023-11-19 07:38:12,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 253 transitions. [2023-11-19 07:38:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:38:12,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:12,823 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:12,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:13,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:38:13,036 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:13,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1390008026, now seen corresponding path program 1 times [2023-11-19 07:38:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:13,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028714750] [2023-11-19 07:38:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:13,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:38:13,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401938557] [2023-11-19 07:38:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:13,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:13,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:13,081 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:13,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b202bc-98a5-42d0-b45a-e2a3deeccaef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:38:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:13,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-19 07:38:13,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:13,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:38:14,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:14,284 INFO L378 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 [2023-11-19 07:38:14,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:14,611 INFO L378 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 [2023-11-19 07:38:14,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:14,939 INFO L378 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 [2023-11-19 07:38:15,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:15,273 INFO L378 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 [2023-11-19 07:38:15,585 INFO L378 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 [2023-11-19 07:38:15,937 INFO L378 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 [2023-11-19 07:38:16,276 INFO L378 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 [2023-11-19 07:38:16,641 INFO L378 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 [2023-11-19 07:38:16,973 INFO L378 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 [2023-11-19 07:38:17,318 INFO L378 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