./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-30.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/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_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/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_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/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 d283b60856dd63b7245a898beb5f6827b5232cb01c4637fc57ceab9070ae9af8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:48,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:48,670 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:48:48,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:48,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:48,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:48,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:48,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:48,721 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:48,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:48,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:48,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:48,729 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:48,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:48,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:48,732 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:48,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:48,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:48,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:48,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:48,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:48,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:48,736 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:48,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:48,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:48,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:48,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:48,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:48,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:48,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:48,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:48,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:48,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:48,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:48,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:48,743 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:48,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:48,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:48,744 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:48,744 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_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d283b60856dd63b7245a898beb5f6827b5232cb01c4637fc57ceab9070ae9af8 [2023-11-19 07:48:49,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:49,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:49,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:49,114 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:49,114 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:49,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-30.i [2023-11-19 07:48:52,423 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:52,761 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:52,762 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-30.i [2023-11-19 07:48:52,774 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/data/46e90fc26/ee8090b13c384586ac1f7c7a6680ecc9/FLAGc97c23ed3 [2023-11-19 07:48:52,797 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/data/46e90fc26/ee8090b13c384586ac1f7c7a6680ecc9 [2023-11-19 07:48:52,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:52,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:52,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:52,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:52,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:52,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:52" (1/1) ... [2023-11-19 07:48:52,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6d58cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:52, skipping insertion in model container [2023-11-19 07:48:52,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:52" (1/1) ... [2023-11-19 07:48:52,876 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:53,042 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_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-30.i[917,930] [2023-11-19 07:48:53,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:53,150 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:53,162 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_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-30.i[917,930] [2023-11-19 07:48:53,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:53,237 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:53,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53 WrapperNode [2023-11-19 07:48:53,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:53,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:53,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:53,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:53,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,345 INFO L138 Inliner]: procedures = 29, calls = 172, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 474 [2023-11-19 07:48:53,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:53,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:53,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:53,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:53,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,385 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,386 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:53,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:53,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:53,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:53,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:53,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:53,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:53,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:48:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:48:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:48:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 07:48:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:48:53,565 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:48:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:53,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:53,804 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:53,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:54,545 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:54,556 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:54,556 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:48:54,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:54 BoogieIcfgContainer [2023-11-19 07:48:54,561 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:54,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:54,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:54,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:54,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:52" (1/3) ... [2023-11-19 07:48:54,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa29117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:54, skipping insertion in model container [2023-11-19 07:48:54,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53" (2/3) ... [2023-11-19 07:48:54,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa29117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:54, skipping insertion in model container [2023-11-19 07:48:54,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:54" (3/3) ... [2023-11-19 07:48:54,573 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-30.i [2023-11-19 07:48:54,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:54,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:48:54,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:54,660 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;@4b0c651d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:54,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:48:54,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 98 states have (on average 1.4183673469387754) internal successors, (139), 99 states have internal predecessors, (139), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:48:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:48:54,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:54,684 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:54,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:54,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash -931553331, now seen corresponding path program 1 times [2023-11-19 07:48:54,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:54,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718015440] [2023-11-19 07:48:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:55,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:55,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718015440] [2023-11-19 07:48:55,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:48:55,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163053787] [2023-11-19 07:48:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:55,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:55,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:55,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:55,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:48:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:55,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:48:55,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-11-19 07:48:55,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:55,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163053787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:55,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:55,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882580329] [2023-11-19 07:48:55,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:55,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:55,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:55,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:55,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:55,564 INFO L87 Difference]: Start difference. First operand has 118 states, 98 states have (on average 1.4183673469387754) internal successors, (139), 99 states have internal predecessors, (139), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:48:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:55,614 INFO L93 Difference]: Finished difference Result 229 states and 357 transitions. [2023-11-19 07:48:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:55,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2023-11-19 07:48:55,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:55,629 INFO L225 Difference]: With dead ends: 229 [2023-11-19 07:48:55,629 INFO L226 Difference]: Without dead ends: 114 [2023-11-19 07:48:55,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:55,640 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:55,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-19 07:48:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-19 07:48:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 95 states have (on average 1.3894736842105264) internal successors, (132), 95 states have internal predecessors, (132), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:48:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 166 transitions. [2023-11-19 07:48:55,703 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 166 transitions. Word has length 138 [2023-11-19 07:48:55,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:55,704 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 166 transitions. [2023-11-19 07:48:55,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:48:55,705 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 166 transitions. [2023-11-19 07:48:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:48:55,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:55,710 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:55,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:55,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:48:55,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:55,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1765490505, now seen corresponding path program 1 times [2023-11-19 07:48:55,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:55,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980311369] [2023-11-19 07:48:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:55,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:56,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075143590] [2023-11-19 07:48:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:56,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:56,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:56,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:56,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:48:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:56,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:48:56,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 07:48:56,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:56,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:56,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980311369] [2023-11-19 07:48:56,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:56,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075143590] [2023-11-19 07:48:56,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075143590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:56,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:56,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:56,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060092551] [2023-11-19 07:48:56,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:56,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:56,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:56,453 INFO L87 Difference]: Start difference. First operand 114 states and 166 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:48:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:56,548 INFO L93 Difference]: Finished difference Result 229 states and 334 transitions. [2023-11-19 07:48:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:56,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-11-19 07:48:56,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:56,559 INFO L225 Difference]: With dead ends: 229 [2023-11-19 07:48:56,559 INFO L226 Difference]: Without dead ends: 118 [2023-11-19 07:48:56,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:56,562 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 3 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:56,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 481 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:56,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-19 07:48:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-11-19 07:48:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 97 states have (on average 1.3814432989690721) internal successors, (134), 97 states have internal predecessors, (134), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:48:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 168 transitions. [2023-11-19 07:48:56,594 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 168 transitions. Word has length 138 [2023-11-19 07:48:56,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:56,597 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 168 transitions. [2023-11-19 07:48:56,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:48:56,597 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 168 transitions. [2023-11-19 07:48:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:48:56,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:56,611 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:56,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:56,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:56,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:56,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1763643463, now seen corresponding path program 1 times [2023-11-19 07:48:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399132118] [2023-11-19 07:48:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:56,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:56,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:56,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793426580] [2023-11-19 07:48:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:56,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:56,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:56,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:56,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:48:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:57,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:48:57,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:59,248 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:48:59,250 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 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-19 07:48:59,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:59,331 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:48:59,332 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 1 case distinctions, treesize of input 40 treesize of output 27 [2023-11-19 07:48:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 07:48:59,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:59,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:59,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399132118] [2023-11-19 07:48:59,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:59,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793426580] [2023-11-19 07:48:59,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793426580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:59,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:59,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:48:59,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976824666] [2023-11-19 07:48:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:59,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:48:59,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:59,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:59,598 INFO L87 Difference]: Start difference. First operand 116 states and 168 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:00,595 INFO L93 Difference]: Finished difference Result 286 states and 415 transitions. [2023-11-19 07:49:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:00,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-11-19 07:49:00,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:00,599 INFO L225 Difference]: With dead ends: 286 [2023-11-19 07:49:00,599 INFO L226 Difference]: Without dead ends: 173 [2023-11-19 07:49:00,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:00,601 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 178 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:00,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 463 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 445 Invalid, 1 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:49:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-19 07:49:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 124. [2023-11-19 07:49:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 105 states have (on average 1.3904761904761904) internal successors, (146), 105 states have internal predecessors, (146), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:49:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 180 transitions. [2023-11-19 07:49:00,619 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 180 transitions. Word has length 138 [2023-11-19 07:49:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:00,620 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 180 transitions. [2023-11-19 07:49:00,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 180 transitions. [2023-11-19 07:49:00,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 07:49:00,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:00,624 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:00,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:00,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:00,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:00,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:00,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1007383518, now seen corresponding path program 1 times [2023-11-19 07:49:00,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:00,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293204520] [2023-11-19 07:49:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:00,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:00,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:00,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80590163] [2023-11-19 07:49:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:00,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:00,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:00,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:00,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:49:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:01,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-19 07:49:01,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:01,306 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 07:49:01,615 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 07:49:01,766 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 07:49:01,917 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 07:49:02,054 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 07:49:02,331 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 07:49:02,538 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 07:49:02,674 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 07:49:02,803 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 07:49:03,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:03,050 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 07:49:03,116 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 07:49:03,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:03,149 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 07:49:03,175 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 07:49:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-19 07:49:03,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:03,235 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_426 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| c_~float_Array_0_arrayfloat_Array_0arrayVar2_Pointer~0.base v_ArrVal_426) 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) 0))) is different from false [2023-11-19 07:49:03,244 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_425 (Array Int Int)) (v_ArrVal_426 (Array Int Int))) (not (= (mod (select (select (store (store |c_#memory_int| c_~float_Array_0_arrayfloat_Array_0arrayVar1_Pointer~0.base v_ArrVal_425) c_~float_Array_0_arrayfloat_Array_0arrayVar2_Pointer~0.base v_ArrVal_426) 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) 0))) is different from false [2023-11-19 07:49:03,353 WARN L854 $PredicateComparison]: unable to prove that (or (= (mod |c_ULTIMATE.start_step_#t~mem6#1| 256) 0) (forall ((v_ArrVal_425 (Array Int Int)) (v_ArrVal_424 (Array Int Int)) (v_ArrVal_426 (Array Int Int))) (not (= (mod (select (select (store (store (store |c_#memory_int| c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_424) c_~float_Array_0_arrayfloat_Array_0arrayVar1_Pointer~0.base v_ArrVal_425) c_~float_Array_0_arrayfloat_Array_0arrayVar2_Pointer~0.base v_ArrVal_426) 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) 0)))) is different from false [2023-11-19 07:49:03,373 WARN L854 $PredicateComparison]: unable to prove that (or (= (mod (select (select |c_#memory_int| 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) 0) (forall ((v_ArrVal_425 (Array Int Int)) (v_ArrVal_424 (Array Int Int)) (v_ArrVal_426 (Array Int Int))) (not (= (mod (select (select (store (store (store |c_#memory_int| c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_424) c_~float_Array_0_arrayfloat_Array_0arrayVar1_Pointer~0.base v_ArrVal_425) c_~float_Array_0_arrayfloat_Array_0arrayVar2_Pointer~0.base v_ArrVal_426) 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) 0)))) is different from false [2023-11-19 07:49:03,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293204520] [2023-11-19 07:49:03,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80590163] [2023-11-19 07:49:03,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80590163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:03,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:03,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 07:49:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402715417] [2023-11-19 07:49:03,421 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:03,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:49:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:49:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=161, Unknown=7, NotChecked=116, Total=342 [2023-11-19 07:49:03,423 INFO L87 Difference]: Start difference. First operand 124 states and 180 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-19 07:49:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:04,255 INFO L93 Difference]: Finished difference Result 318 states and 462 transitions. [2023-11-19 07:49:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:04,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 139 [2023-11-19 07:49:04,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:04,258 INFO L225 Difference]: With dead ends: 318 [2023-11-19 07:49:04,258 INFO L226 Difference]: Without dead ends: 197 [2023-11-19 07:49:04,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=248, Unknown=7, NotChecked=148, Total=506 [2023-11-19 07:49:04,260 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 640 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:04,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 473 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:49:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-19 07:49:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 138. [2023-11-19 07:49:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 119 states have (on average 1.403361344537815) internal successors, (167), 119 states have internal predecessors, (167), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:49:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 201 transitions. [2023-11-19 07:49:04,291 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 201 transitions. Word has length 139 [2023-11-19 07:49:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:04,293 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 201 transitions. [2023-11-19 07:49:04,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-19 07:49:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 201 transitions. [2023-11-19 07:49:04,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 07:49:04,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:04,302 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:04,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:04,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:04,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:04,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:04,517 INFO L85 PathProgramCache]: Analyzing trace with hash -241162576, now seen corresponding path program 1 times [2023-11-19 07:49:04,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:04,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138185808] [2023-11-19 07:49:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:04,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:04,562 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:04,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128883778] [2023-11-19 07:49:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:04,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:04,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:04,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:04,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:49:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:04,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-19 07:49:04,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:04,955 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 7 treesize of output 3 [2023-11-19 07:49:06,771 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 07:49:07,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:07,123 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 13 [2023-11-19 07:49:07,452 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 13 [2023-11-19 07:49:07,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:07,758 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2023-11-19 07:49:07,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:07,852 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2023-11-19 07:49:08,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:08,028 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 07:49:08,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:08,079 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 07:49:08,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:08,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 33 [2023-11-19 07:49:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 125 proven. 165 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-11-19 07:49:08,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:08,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:08,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138185808] [2023-11-19 07:49:08,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:08,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128883778] [2023-11-19 07:49:08,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128883778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:08,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:08,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 07:49:08,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944198512] [2023-11-19 07:49:08,541 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:08,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:49:08,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:49:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=293, Unknown=20, NotChecked=0, Total=380 [2023-11-19 07:49:08,544 INFO L87 Difference]: Start difference. First operand 138 states and 201 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 07:49:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:09,984 INFO L93 Difference]: Finished difference Result 350 states and 504 transitions. [2023-11-19 07:49:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:49:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 139 [2023-11-19 07:49:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:09,988 INFO L225 Difference]: With dead ends: 350 [2023-11-19 07:49:09,988 INFO L226 Difference]: Without dead ends: 215 [2023-11-19 07:49:09,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=669, Unknown=20, NotChecked=0, Total=870 [2023-11-19 07:49:09,990 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 348 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:09,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 810 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:49:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-19 07:49:10,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 154. [2023-11-19 07:49:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.3955223880597014) internal successors, (187), 134 states have internal predecessors, (187), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:49:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 221 transitions. [2023-11-19 07:49:10,049 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 221 transitions. Word has length 139 [2023-11-19 07:49:10,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:10,051 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 221 transitions. [2023-11-19 07:49:10,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 07:49:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 221 transitions. [2023-11-19 07:49:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 07:49:10,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:10,055 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:10,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:10,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:10,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:10,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1362183814, now seen corresponding path program 1 times [2023-11-19 07:49:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:10,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888038266] [2023-11-19 07:49:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:10,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:10,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989103429] [2023-11-19 07:49:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:10,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:10,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:10,335 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:10,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:49:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:10,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:49:10,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 07:49:10,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:10,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888038266] [2023-11-19 07:49:10,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989103429] [2023-11-19 07:49:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989103429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:10,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:10,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:10,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125168712] [2023-11-19 07:49:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:10,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:10,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:10,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:10,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:10,602 INFO L87 Difference]: Start difference. First operand 154 states and 221 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:10,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:10,655 INFO L93 Difference]: Finished difference Result 328 states and 472 transitions. [2023-11-19 07:49:10,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:10,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-11-19 07:49:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:10,657 INFO L225 Difference]: With dead ends: 328 [2023-11-19 07:49:10,658 INFO L226 Difference]: Without dead ends: 177 [2023-11-19 07:49:10,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:10,661 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 65 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:10,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 677 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-19 07:49:10,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 155. [2023-11-19 07:49:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 135 states have (on average 1.3925925925925926) internal successors, (188), 135 states have internal predecessors, (188), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:49:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 222 transitions. [2023-11-19 07:49:10,683 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 222 transitions. Word has length 141 [2023-11-19 07:49:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:10,683 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 222 transitions. [2023-11-19 07:49:10,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 222 transitions. [2023-11-19 07:49:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 07:49:10,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:10,688 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:10,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:10,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:10,895 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:10,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash -873670949, now seen corresponding path program 1 times [2023-11-19 07:49:10,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:10,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408478463] [2023-11-19 07:49:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:10,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:10,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:10,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199062561] [2023-11-19 07:49:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:10,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:10,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:10,961 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:10,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:49:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:11,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-19 07:49:11,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:12,576 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:49:12,577 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 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-19 07:49:12,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:12,637 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:49:12,638 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 1 case distinctions, treesize of input 40 treesize of output 27 [2023-11-19 07:49:12,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:12,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:12,950 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 33 treesize of output 27 [2023-11-19 07:49:13,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:13,001 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 33 treesize of output 27 [2023-11-19 07:49:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:13,112 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:49:13,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 29 [2023-11-19 07:49:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-19 07:49:13,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:13,225 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_743 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~float_Array_0_arrayfloat_Array_0arrayVar2_Pointer~0.base v_ArrVal_743))) (= (select (select .cse0 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_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 07:49:13,240 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_743 (Array Int Int)) (v_ArrVal_742 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~float_Array_0_arrayfloat_Array_0arrayVar1_Pointer~0.base v_ArrVal_742) c_~float_Array_0_arrayfloat_Array_0arrayVar2_Pointer~0.base v_ArrVal_743))) (= (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) (select (select .cse0 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset)))) is different from false [2023-11-19 07:49:13,618 INFO L349 Elim1Store]: treesize reduction 63, result has 41.7 percent of original size [2023-11-19 07:49:13,620 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 3 case distinctions, treesize of input 130 treesize of output 102 [2023-11-19 07:49:13,683 INFO L349 Elim1Store]: treesize reduction 11, result has 67.6 percent of original size [2023-11-19 07:49:13,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 718 treesize of output 652 [2023-11-19 07:49:13,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:49:13,763 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 278 treesize of output 270 [2023-11-19 07:49:13,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:49:13,802 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 262 treesize of output 238 [2023-11-19 07:49:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 07:49:15,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:15,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408478463] [2023-11-19 07:49:15,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199062561] [2023-11-19 07:49:15,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199062561] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:15,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:15,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 24 [2023-11-19 07:49:15,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860635707] [2023-11-19 07:49:15,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:15,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:49:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:15,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:49:15,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=393, Unknown=5, NotChecked=82, Total=552 [2023-11-19 07:49:15,789 INFO L87 Difference]: Start difference. First operand 155 states and 222 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:19,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:19,135 INFO L93 Difference]: Finished difference Result 399 states and 569 transitions. [2023-11-19 07:49:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:49:19,139 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-11-19 07:49:19,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:19,141 INFO L225 Difference]: With dead ends: 399 [2023-11-19 07:49:19,141 INFO L226 Difference]: Without dead ends: 247 [2023-11-19 07:49:19,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 258 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=836, Unknown=5, NotChecked=122, Total=1122 [2023-11-19 07:49:19,143 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 598 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 548 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:19,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 894 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 736 Invalid, 0 Unknown, 548 Unchecked, 2.6s Time] [2023-11-19 07:49:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-19 07:49:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 201. [2023-11-19 07:49:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 181 states have (on average 1.3922651933701657) internal successors, (252), 181 states have internal predecessors, (252), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:49:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 286 transitions. [2023-11-19 07:49:19,164 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 286 transitions. Word has length 141 [2023-11-19 07:49:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:19,165 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 286 transitions. [2023-11-19 07:49:19,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:19,165 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 286 transitions. [2023-11-19 07:49:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 07:49:19,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:19,168 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:19,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:19,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:19,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:19,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash -945216337, now seen corresponding path program 1 times [2023-11-19 07:49:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496604232] [2023-11-19 07:49:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:19,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:19,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254574598] [2023-11-19 07:49:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:19,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:19,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:19,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:19,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:49:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:19,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-19 07:49:19,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:23,008 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 07:49:23,394 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 07:49:23,797 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:49:23,797 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 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-19 07:49:24,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:24,015 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-19 07:49:24,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 50 [2023-11-19 07:49:24,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 63 [2023-11-19 07:49:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-11-19 07:49:24,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496604232] [2023-11-19 07:49:26,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254574598] [2023-11-19 07:49:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254574598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:26,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:26,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 07:49:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453298206] [2023-11-19 07:49:26,340 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:26,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:49:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:49:26,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=634, Unknown=31, NotChecked=0, Total=756 [2023-11-19 07:49:26,342 INFO L87 Difference]: Start difference. First operand 201 states and 286 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:49:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:29,321 INFO L93 Difference]: Finished difference Result 539 states and 758 transitions. [2023-11-19 07:49:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:49:29,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 141 [2023-11-19 07:49:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:29,324 INFO L225 Difference]: With dead ends: 539 [2023-11-19 07:49:29,325 INFO L226 Difference]: Without dead ends: 341 [2023-11-19 07:49:29,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=213, Invalid=1088, Unknown=31, NotChecked=0, Total=1332 [2023-11-19 07:49:29,327 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 443 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:29,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 952 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 07:49:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-19 07:49:29,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 206. [2023-11-19 07:49:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 186 states have (on average 1.39247311827957) internal successors, (259), 186 states have internal predecessors, (259), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:49:29,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 293 transitions. [2023-11-19 07:49:29,353 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 293 transitions. Word has length 141 [2023-11-19 07:49:29,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:29,353 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 293 transitions. [2023-11-19 07:49:29,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:49:29,354 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 293 transitions. [2023-11-19 07:49:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 07:49:29,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:29,356 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:29,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:29,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:29,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:29,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1966284691, now seen corresponding path program 1 times [2023-11-19 07:49:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:29,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251123268] [2023-11-19 07:49:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:29,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:29,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:29,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8212610] [2023-11-19 07:49:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:29,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:29,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:29,624 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:29,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:49:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:29,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:49:29,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:30,798 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:49:30,798 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 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-19 07:49:30,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:30,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:30,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:30,885 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 26 treesize of output 24 [2023-11-19 07:49:30,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:30,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:30,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:30,989 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 26 treesize of output 24 [2023-11-19 07:49:31,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:31,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-11-19 07:49:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 07:49:31,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:31,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:31,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251123268] [2023-11-19 07:49:31,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:31,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8212610] [2023-11-19 07:49:31,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8212610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:31,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:31,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:49:31,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172072436] [2023-11-19 07:49:31,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:31,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:31,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:31,070 INFO L87 Difference]: Start difference. First operand 206 states and 293 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:31,576 INFO L93 Difference]: Finished difference Result 472 states and 668 transitions. [2023-11-19 07:49:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:31,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-11-19 07:49:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:31,579 INFO L225 Difference]: With dead ends: 472 [2023-11-19 07:49:31,579 INFO L226 Difference]: Without dead ends: 269 [2023-11-19 07:49:31,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:31,581 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 339 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:31,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 521 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:49:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-19 07:49:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 229. [2023-11-19 07:49:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 209 states have (on average 1.3827751196172249) internal successors, (289), 209 states have internal predecessors, (289), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:49:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 323 transitions. [2023-11-19 07:49:31,608 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 323 transitions. Word has length 141 [2023-11-19 07:49:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:31,609 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 323 transitions. [2023-11-19 07:49:31,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 323 transitions. [2023-11-19 07:49:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 07:49:31,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:31,611 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:31,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 07:49:31,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:49:31,829 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:31,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1660807217, now seen corresponding path program 1 times [2023-11-19 07:49:31,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:31,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468494115] [2023-11-19 07:49:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:31,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:31,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:31,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143280036] [2023-11-19 07:49:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:31,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:31,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:31,862 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:31,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:49:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:32,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-19 07:49:32,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:34,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,352 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 07:49:34,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-19 07:49:34,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,726 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 37 treesize of output 31 [2023-11-19 07:49:34,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,783 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 37 treesize of output 31 [2023-11-19 07:49:34,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2023-11-19 07:49:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 07:49:34,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:34,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:34,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468494115] [2023-11-19 07:49:34,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:34,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143280036] [2023-11-19 07:49:34,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143280036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:34,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:34,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:49:34,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742824141] [2023-11-19 07:49:34,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:34,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:49:34,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:34,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:49:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:49:34,912 INFO L87 Difference]: Start difference. First operand 229 states and 323 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:36,046 INFO L93 Difference]: Finished difference Result 566 states and 793 transitions. [2023-11-19 07:49:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:36,049 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 141 [2023-11-19 07:49:36,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:36,052 INFO L225 Difference]: With dead ends: 566 [2023-11-19 07:49:36,053 INFO L226 Difference]: Without dead ends: 340 [2023-11-19 07:49:36,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:49:36,054 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 455 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:36,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 733 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:49:36,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-11-19 07:49:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 226. [2023-11-19 07:49:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 206 states have (on average 1.383495145631068) internal successors, (285), 206 states have internal predecessors, (285), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:49:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 319 transitions. [2023-11-19 07:49:36,085 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 319 transitions. Word has length 141 [2023-11-19 07:49:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:36,086 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 319 transitions. [2023-11-19 07:49:36,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:49:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 319 transitions. [2023-11-19 07:49:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-19 07:49:36,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:36,089 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:36,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:36,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:49:36,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:36,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash -665293679, now seen corresponding path program 1 times [2023-11-19 07:49:36,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:36,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774762619] [2023-11-19 07:49:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:36,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:36,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:36,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505385704] [2023-11-19 07:49:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:36,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:36,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:36,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:36,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8daa300a-b631-4c2b-ae2d-ce819e7e38b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:49:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:36,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-19 07:49:36,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:37,905 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 07:49:38,534 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 28 treesize of output 12 [2023-11-19 07:49:38,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:39,000 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 24 treesize of output 12 [2023-11-19 07:49:39,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:39,292 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 28 treesize of output 12 [2023-11-19 07:49:39,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:39,551 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 28 treesize of output 12 [2023-11-19 07:49:39,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:39,884 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 24 treesize of output 12 [2023-11-19 07:49:39,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:39,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:39,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:39,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2023-11-19 07:49:40,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:40,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:40,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:40,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:40,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 26 [2023-11-19 07:49:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 344 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-19 07:49:40,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:41,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:41,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774762619] [2023-11-19 07:49:41,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:41,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505385704] [2023-11-19 07:49:41,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505385704] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:41,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:41,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-19 07:49:41,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780167134] [2023-11-19 07:49:41,732 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:41,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:49:41,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:49:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=462, Unknown=13, NotChecked=0, Total=552 [2023-11-19 07:49:41,734 INFO L87 Difference]: Start difference. First operand 226 states and 319 transitions. Second operand has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17)