./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array10_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array10_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya --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 0942a0394519a722254bfe5a1820a904a71ba1b47e3e66c2c8dc2abe6585692f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:36:24,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:36:24,243 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:36:24,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:36:24,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:36:24,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:36:24,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:36:24,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:36:24,274 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:36:24,275 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:36:24,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:36:24,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:36:24,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:36:24,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:36:24,277 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:36:24,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:36:24,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:36:24,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:36:24,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:36:24,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:36:24,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:36:24,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:36:24,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:36:24,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:36:24,282 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:36:24,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:36:24,282 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:36:24,283 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:36:24,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:36:24,283 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:36:24,284 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:36:24,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:36:24,284 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:36:24,285 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:36:24,285 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:36:24,285 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:36:24,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:36:24,285 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:36:24,285 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:36:24,286 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:36:24,286 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:36:24,286 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:36:24,286 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_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0942a0394519a722254bfe5a1820a904a71ba1b47e3e66c2c8dc2abe6585692f [2023-11-29 00:36:24,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:36:24,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:36:24,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:36:24,549 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:36:24,549 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:36:24,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-patterns/array10_pattern.c [2023-11-29 00:36:27,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:36:27,467 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:36:27,467 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/sv-benchmarks/c/array-patterns/array10_pattern.c [2023-11-29 00:36:27,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/data/73d460aa7/8f81ae5a9cfa4a84907ed7bb13ce0368/FLAG629b3104f [2023-11-29 00:36:27,487 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/data/73d460aa7/8f81ae5a9cfa4a84907ed7bb13ce0368 [2023-11-29 00:36:27,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:36:27,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:36:27,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:36:27,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:36:27,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:36:27,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3722e3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27, skipping insertion in model container [2023-11-29 00:36:27,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,519 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:36:27,637 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_96ce2642-3899-4a15-9ac7-37ccc96397ca/sv-benchmarks/c/array-patterns/array10_pattern.c[1326,1339] [2023-11-29 00:36:27,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:36:27,666 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:36:27,676 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_96ce2642-3899-4a15-9ac7-37ccc96397ca/sv-benchmarks/c/array-patterns/array10_pattern.c[1326,1339] [2023-11-29 00:36:27,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:36:27,698 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:36:27,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27 WrapperNode [2023-11-29 00:36:27,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:36:27,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:36:27,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:36:27,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:36:27,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,734 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-11-29 00:36:27,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:36:27,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:36:27,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:36:27,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:36:27,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,760 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 4, 3]. 44 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2023-11-29 00:36:27,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:36:27,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:36:27,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:36:27,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:36:27,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (1/1) ... [2023-11-29 00:36:27,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:36:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:27,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:36:27,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:36:27,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:36:27,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:36:27,838 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:36:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:36:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:36:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:36:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:36:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:36:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:36:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:36:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:36:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:36:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:36:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:36:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:36:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:36:27,917 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:36:27,919 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:36:28,088 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:36:28,119 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:36:28,119 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 00:36:28,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:36:28 BoogieIcfgContainer [2023-11-29 00:36:28,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:36:28,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:36:28,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:36:28,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:36:28,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:36:27" (1/3) ... [2023-11-29 00:36:28,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f37e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:36:28, skipping insertion in model container [2023-11-29 00:36:28,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:36:27" (2/3) ... [2023-11-29 00:36:28,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f37e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:36:28, skipping insertion in model container [2023-11-29 00:36:28,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:36:28" (3/3) ... [2023-11-29 00:36:28,129 INFO L112 eAbstractionObserver]: Analyzing ICFG array10_pattern.c [2023-11-29 00:36:28,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:36:28,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:36:28,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:36:28,193 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;@5f0055bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:36:28,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:36:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:36:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:36:28,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:28,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:28,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:36:28,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:28,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1066875782, now seen corresponding path program 1 times [2023-11-29 00:36:28,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:28,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518962246] [2023-11-29 00:36:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:28,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:28,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518962246] [2023-11-29 00:36:28,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 00:36:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370656985] [2023-11-29 00:36:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:28,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:28,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:28,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:36:28,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:36:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:36:28,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:36:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:28,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:36:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370656985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:36:28,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139163547] [2023-11-29 00:36:28,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:28,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:36:28,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:28,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:36:28,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:36:28,485 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:36:28,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:28,534 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2023-11-29 00:36:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:36:28,537 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-29 00:36:28,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:28,544 INFO L225 Difference]: With dead ends: 42 [2023-11-29 00:36:28,544 INFO L226 Difference]: Without dead ends: 20 [2023-11-29 00:36:28,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:36:28,551 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:28,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:36:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-29 00:36:28,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-29 00:36:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:36:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-11-29 00:36:28,592 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2023-11-29 00:36:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:36:28,593 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-11-29 00:36:28,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:36:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-11-29 00:36:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 00:36:28,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:28,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:28,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:36:28,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 00:36:28,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:36:28,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1109591495, now seen corresponding path program 1 times [2023-11-29 00:36:28,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:28,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587416673] [2023-11-29 00:36:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:28,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:28,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:36:28,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562390368] [2023-11-29 00:36:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:28,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:28,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:28,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:36:28,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:36:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:28,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:36:28,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:36:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:28,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:36:28,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:28,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587416673] [2023-11-29 00:36:28,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:36:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562390368] [2023-11-29 00:36:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562390368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:36:28,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:36:28,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:36:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216510648] [2023-11-29 00:36:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:36:28,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:36:28,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:29,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:36:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:36:29,001 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:36:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:29,086 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2023-11-29 00:36:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:36:29,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-11-29 00:36:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:29,088 INFO L225 Difference]: With dead ends: 42 [2023-11-29 00:36:29,088 INFO L226 Difference]: Without dead ends: 26 [2023-11-29 00:36:29,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:36:29,090 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:29,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 51 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:36:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-29 00:36:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-29 00:36:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:36:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-11-29 00:36:29,099 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 23 [2023-11-29 00:36:29,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:36:29,099 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-11-29 00:36:29,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:36:29,100 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-11-29 00:36:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 00:36:29,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:29,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:29,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:36:29,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:29,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:36:29,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:29,306 INFO L85 PathProgramCache]: Analyzing trace with hash -865149808, now seen corresponding path program 1 times [2023-11-29 00:36:29,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:29,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265443926] [2023-11-29 00:36:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:29,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:29,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:36:29,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738231064] [2023-11-29 00:36:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:29,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:29,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:29,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:36:29,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:36:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:29,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:36:29,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:36:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:36:29,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:36:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:36:29,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:29,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265443926] [2023-11-29 00:36:29,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:36:29,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738231064] [2023-11-29 00:36:29,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738231064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:36:29,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:36:29,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 00:36:29,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775817890] [2023-11-29 00:36:29,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:36:29,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:36:29,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:36:29,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:36:29,740 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:36:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:30,101 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2023-11-29 00:36:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:36:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-11-29 00:36:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:30,103 INFO L225 Difference]: With dead ends: 82 [2023-11-29 00:36:30,103 INFO L226 Difference]: Without dead ends: 65 [2023-11-29 00:36:30,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:36:30,106 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 116 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:30,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 167 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:36:30,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-29 00:36:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 40. [2023-11-29 00:36:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:36:30,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-11-29 00:36:30,118 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 25 [2023-11-29 00:36:30,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:36:30,118 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-11-29 00:36:30,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:36:30,119 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-11-29 00:36:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 00:36:30,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:30,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:30,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:36:30,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 00:36:30,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:36:30,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:30,321 INFO L85 PathProgramCache]: Analyzing trace with hash -185091438, now seen corresponding path program 1 times [2023-11-29 00:36:30,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:30,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769116369] [2023-11-29 00:36:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:30,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:30,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:36:30,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584301675] [2023-11-29 00:36:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:30,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:30,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:30,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:36:30,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:36:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:36:30,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 00:36:30,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:36:30,561 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 11 treesize of output 7 [2023-11-29 00:36:30,576 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 [2023-11-29 00:36:30,922 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2023-11-29 00:36:30,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 00:36:31,095 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-29 00:36:31,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2023-11-29 00:36:31,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 00:36:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:36:31,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:37:46,406 WARN L293 SmtUtils]: Spent 16.33s on a formula simplification that was a NOOP. DAG size: 80 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:37:51,719 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~sum~0#1| 4)) (.cse3 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse8 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0)) (.cse5 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array2~0#1.base|))) (and (forall ((v_z_3 Int) (v_y_3 Int)) (let ((.cse4 (* v_z_3 4))) (let ((.cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4))) (let ((.cse0 (* v_y_3 4294967296)) (.cse7 (mod (select .cse5 .cse6) 4294967296))) (or (< c_~ARR_SIZE~0 (+ v_z_3 .cse0 1)) (forall ((v_ArrVal_77 Int)) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse1 (mod (* v_z_3 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (< 2147483647 .cse1) (< .cse1 v_ArrVal_77)))) (< (+ .cse2 (* (select (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4) v_ArrVal_77) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4) (* (select (store .cse5 .cse6 .cse7) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4)) .cse8))) (< (+ v_z_3 .cse0) 0) (< v_z_3 0) (< 2147483647 .cse7) (< 2147483647 v_z_3)))))) (forall ((v_z_3 Int) (v_y_3 Int)) (let ((.cse12 (* v_y_3 4294967296))) (or (forall ((v_ArrVal_77 Int)) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse9 (mod (* v_z_3 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (< 2147483647 .cse9) (< .cse9 v_ArrVal_77)))) (< (let ((.cse11 (* v_z_3 4))) (+ (* (select (let ((.cse10 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse11))) (store .cse5 .cse10 (+ (mod (select .cse5 .cse10) 4294967296) (- 4294967296)))) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4) .cse2 (* (select (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse11) v_ArrVal_77) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4))) .cse8))) (< c_~ARR_SIZE~0 (+ v_z_3 .cse12 1)) (< (+ v_z_3 .cse12) 0) (< v_z_3 0) (< 2147483647 v_z_3)))) (forall ((v_z_3 Int) (v_y_3 Int)) (let ((.cse16 (* v_y_3 4294967296))) (or (forall ((v_ArrVal_77 Int)) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse13 (mod (* v_z_3 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (< .cse13 2147483648) (< .cse13 (+ 4294967296 v_ArrVal_77))))) (< (let ((.cse15 (* v_z_3 4))) (+ (* (select (let ((.cse14 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse15))) (store .cse5 .cse14 (+ (mod (select .cse5 .cse14) 4294967296) (- 4294967296)))) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4) .cse2 (* (select (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse15) v_ArrVal_77) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4))) .cse8))) (< c_~ARR_SIZE~0 (+ v_z_3 .cse16 1)) (< (+ v_z_3 .cse16) 0) (< v_z_3 0) (< 2147483647 v_z_3)))) (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_z_5 Int) (v_y_5 Int) (v_ArrVal_77 Int)) (let ((.cse18 (* v_y_5 4294967296)) (.cse17 (mod (* v_z_5 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (< .cse17 v_ArrVal_77) (< 4294967295 v_z_5) (< c_~ARR_SIZE~0 (+ v_z_5 .cse18 1)) (< (let ((.cse20 (* v_z_5 4))) (+ (* (select (let ((.cse19 (+ .cse20 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store .cse5 .cse19 (+ (mod (select .cse5 .cse19) 4294967296) (- 4294967296)))) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4) .cse2 (* 4 (select (store .cse3 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse20) v_ArrVal_77) |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) .cse8) (< (+ v_z_5 .cse18) 0) (< v_z_5 2147483648) (< 2147483647 .cse17)))) (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_77 Int) (v_y_8 Int) (v_z_8 Int)) (let ((.cse24 (mod (* v_z_8 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296)) (.cse23 (* v_y_8 4294967296))) (or (< (let ((.cse22 (* v_z_8 4))) (+ (* (select (let ((.cse21 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse22))) (store .cse5 .cse21 (+ (mod (select .cse5 .cse21) 4294967296) (- 4294967296)))) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4) .cse2 (* (select (store .cse3 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse22) v_ArrVal_77) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4))) .cse8) (< c_~ARR_SIZE~0 (+ .cse23 v_z_8 1)) (< .cse24 (+ 4294967296 v_ArrVal_77)) (< 4294967295 v_z_8) (< .cse24 2147483648) (< (+ .cse23 v_z_8) 0) (< v_z_8 2147483648)))) (forall ((v_z_3 Int) (v_y_3 Int)) (let ((.cse27 (* v_z_3 4))) (let ((.cse28 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse27))) (let ((.cse25 (* v_y_3 4294967296)) (.cse29 (mod (select .cse5 .cse28) 4294967296))) (or (< c_~ARR_SIZE~0 (+ v_z_3 .cse25 1)) (forall ((v_ArrVal_77 Int)) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse26 (mod (* v_z_3 |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|) 4294967296))) (or (< .cse26 2147483648) (< .cse26 (+ 4294967296 v_ArrVal_77))))) (< (+ .cse2 (* (select (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse27) v_ArrVal_77) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 4) (* (select (store .cse5 .cse28 .cse29) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 4)) .cse8))) (< (+ v_z_3 .cse25) 0) (< v_z_3 0) (< 2147483647 .cse29) (< 2147483647 v_z_3)))))))) is different from true [2023-11-29 00:37:51,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:37:51,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769116369] [2023-11-29 00:37:51,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:37:51,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584301675] [2023-11-29 00:37:51,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584301675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:37:51,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:37:51,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-29 00:37:51,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773416524] [2023-11-29 00:37:51,725 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:37:51,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:37:51,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:37:51,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:37:51,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=406, Unknown=9, NotChecked=42, Total=552 [2023-11-29 00:37:51,726 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:37:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:37:56,353 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2023-11-29 00:37:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:37:56,354 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2023-11-29 00:37:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:37:56,355 INFO L225 Difference]: With dead ends: 45 [2023-11-29 00:37:56,355 INFO L226 Difference]: Without dead ends: 27 [2023-11-29 00:37:56,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 63.0s TimeCoverageRelationStatistics Valid=195, Invalid=791, Unknown=10, NotChecked=60, Total=1056 [2023-11-29 00:37:56,357 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 41 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:37:56,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 113 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:37:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-29 00:37:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-29 00:37:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:37:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-11-29 00:37:56,364 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 25 [2023-11-29 00:37:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:37:56,364 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-29 00:37:56,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:37:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-11-29 00:37:56,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 00:37:56,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:37:56,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:37:56,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:37:56,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:37:56,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:37:56,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:37:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash 391671843, now seen corresponding path program 2 times [2023-11-29 00:37:56,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:37:56,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504323281] [2023-11-29 00:37:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:37:56,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:37:56,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:37:56,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435710999] [2023-11-29 00:37:56,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:37:56,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:37:56,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:37:56,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:37:56,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:37:56,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:37:56,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:37:56,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:37:56,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:37:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:37:56,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:37:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:37:56,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:37:56,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504323281] [2023-11-29 00:37:56,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:37:56,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435710999] [2023-11-29 00:37:56,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435710999] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:37:56,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:37:56,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-29 00:37:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070646974] [2023-11-29 00:37:56,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:37:56,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:37:56,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:37:56,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:37:56,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:37:56,757 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:37:56,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:37:56,810 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2023-11-29 00:37:56,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:37:56,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-11-29 00:37:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:37:56,812 INFO L225 Difference]: With dead ends: 32 [2023-11-29 00:37:56,812 INFO L226 Difference]: Without dead ends: 28 [2023-11-29 00:37:56,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:37:56,813 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:37:56,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 60 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:37:56,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-29 00:37:56,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-29 00:37:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:37:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-11-29 00:37:56,820 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 26 [2023-11-29 00:37:56,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:37:56,820 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-11-29 00:37:56,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:37:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-11-29 00:37:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 00:37:56,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:37:56,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:37:56,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:37:57,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:37:57,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:37:57,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:37:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash -716533849, now seen corresponding path program 3 times [2023-11-29 00:37:57,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:37:57,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512193031] [2023-11-29 00:37:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:37:57,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:37:57,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:37:57,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022467437] [2023-11-29 00:37:57,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:37:57,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:37:57,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:37:57,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:37:57,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:37:57,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:37:57,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:37:57,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 00:37:57,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:37:57,231 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 [2023-11-29 00:37:57,237 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 [2023-11-29 00:37:57,278 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 23 treesize of output 11 [2023-11-29 00:37:57,291 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 23 treesize of output 11 [2023-11-29 00:37:57,587 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-29 00:37:57,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 67 [2023-11-29 00:37:57,632 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-11-29 00:37:57,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 85 [2023-11-29 00:37:57,691 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-11-29 00:37:57,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 20 [2023-11-29 00:37:58,102 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-29 00:37:58,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 138 treesize of output 135 [2023-11-29 00:37:58,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:37:58,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:37:58,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 267 [2023-11-29 00:37:58,514 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:37:58,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 87 [2023-11-29 00:37:59,731 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 118 treesize of output 106 [2023-11-29 00:37:59,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:37:59,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:37:59,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:37:59,827 INFO L349 Elim1Store]: treesize reduction 56, result has 39.1 percent of original size [2023-11-29 00:37:59,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 193 [2023-11-29 00:37:59,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:37:59,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:37:59,870 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 3 case distinctions, treesize of input 46 treesize of output 38 [2023-11-29 00:37:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:37:59,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:37:59,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:37:59,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:37:59,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 50 [2023-11-29 00:38:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:00,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:38:51,339 WARN L293 SmtUtils]: Spent 18.43s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:39:07,482 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:39:15,487 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:39:23,494 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:39:31,501 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:41:26,019 WARN L293 SmtUtils]: Spent 47.86s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:41:26,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512193031] [2023-11-29 00:41:26,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:41:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022467437] [2023-11-29 00:41:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022467437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:26,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:41:26,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-29 00:41:26,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701323723] [2023-11-29 00:41:26,021 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:26,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:41:26,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:26,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:41:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=637, Unknown=12, NotChecked=0, Total=756 [2023-11-29 00:41:26,023 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:41:57,413 WARN L293 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 135 DAG size of output: 114 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:42:12,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:42:23,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:42:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:42:24,487 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2023-11-29 00:42:24,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 00:42:24,488 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-11-29 00:42:24,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:42:24,490 INFO L225 Difference]: With dead ends: 86 [2023-11-29 00:42:24,490 INFO L226 Difference]: Without dead ends: 80 [2023-11-29 00:42:24,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 188.2s TimeCoverageRelationStatistics Valid=561, Invalid=2073, Unknown=18, NotChecked=0, Total=2652 [2023-11-29 00:42:24,492 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 76 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:42:24,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 153 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 310 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2023-11-29 00:42:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-29 00:42:24,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 40. [2023-11-29 00:42:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:42:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-11-29 00:42:24,512 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 27 [2023-11-29 00:42:24,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:42:24,513 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-11-29 00:42:24,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:42:24,513 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-11-29 00:42:24,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 00:42:24,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:42:24,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:24,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:42:24,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:24,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:42:24,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:24,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1109560859, now seen corresponding path program 2 times [2023-11-29 00:42:24,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:24,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429270291] [2023-11-29 00:42:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:24,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:24,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:42:24,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846120399] [2023-11-29 00:42:24,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:42:24,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:24,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:24,735 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:24,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:42:24,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:42:24,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:42:24,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 00:42:24,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:24,957 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 11 treesize of output 7 [2023-11-29 00:42:24,966 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 11 treesize of output 7 [2023-11-29 00:42:25,019 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 23 treesize of output 11 [2023-11-29 00:42:25,033 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 23 treesize of output 11 [2023-11-29 00:42:25,537 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-29 00:42:25,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 77 [2023-11-29 00:42:25,615 INFO L349 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2023-11-29 00:42:25,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 93 [2023-11-29 00:42:25,667 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2023-11-29 00:42:25,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 55 treesize of output 32 [2023-11-29 00:42:26,256 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-29 00:42:26,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 196 treesize of output 177 [2023-11-29 00:42:26,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:26,375 INFO L349 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-11-29 00:42:26,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 334 [2023-11-29 00:42:26,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:26,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:26,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 126 [2023-11-29 00:42:26,544 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-29 00:42:27,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:42:27,281 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 1 case distinctions, treesize of input 56 treesize of output 32 [2023-11-29 00:42:27,288 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:42:27,288 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 1 case distinctions, treesize of input 28 treesize of output 12 [2023-11-29 00:42:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:27,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:38,536 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:42:46,601 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:43:24,237 WARN L293 SmtUtils]: Spent 16.95s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:43:24,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:24,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429270291] [2023-11-29 00:43:24,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:43:24,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846120399] [2023-11-29 00:43:24,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846120399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:24,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:43:24,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-11-29 00:43:24,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442285625] [2023-11-29 00:43:24,712 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:24,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:43:24,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:24,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:43:24,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=776, Unknown=4, NotChecked=0, Total=930 [2023-11-29 00:43:24,713 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 18 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:43:31,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:43:31,865 INFO L93 Difference]: Finished difference Result 96 states and 117 transitions. [2023-11-29 00:43:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 00:43:31,865 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 18 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-11-29 00:43:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:43:31,866 INFO L225 Difference]: With dead ends: 96 [2023-11-29 00:43:31,866 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 00:43:31,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 41.4s TimeCoverageRelationStatistics Valid=449, Invalid=2096, Unknown=5, NotChecked=0, Total=2550 [2023-11-29 00:43:31,868 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 85 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:43:31,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 163 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:43:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 00:43:31,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 57. [2023-11-29 00:43:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 00:43:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2023-11-29 00:43:31,887 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 27 [2023-11-29 00:43:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:43:31,888 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2023-11-29 00:43:31,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.15) internal successors, (23), 18 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:43:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2023-11-29 00:43:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 00:43:31,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:43:31,889 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:31,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:43:32,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:32,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:43:32,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash -711171933, now seen corresponding path program 4 times [2023-11-29 00:43:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030180479] [2023-11-29 00:43:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:32,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:32,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:43:32,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270470945] [2023-11-29 00:43:32,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:43:32,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:32,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:32,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:32,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:43:32,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:43:32,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:32,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:43:32,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:32,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:43:32,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:32,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030180479] [2023-11-29 00:43:32,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:43:32,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270470945] [2023-11-29 00:43:32,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270470945] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:32,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:43:32,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-29 00:43:32,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222913979] [2023-11-29 00:43:32,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:32,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:43:32,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:32,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:43:32,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:43:32,305 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:43:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:43:32,422 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2023-11-29 00:43:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:43:32,423 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-11-29 00:43:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:43:32,424 INFO L225 Difference]: With dead ends: 105 [2023-11-29 00:43:32,424 INFO L226 Difference]: Without dead ends: 96 [2023-11-29 00:43:32,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:43:32,425 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:43:32,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 107 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:43:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-29 00:43:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2023-11-29 00:43:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 states have internal predecessors, (83), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 00:43:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2023-11-29 00:43:32,457 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 28 [2023-11-29 00:43:32,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:43:32,457 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2023-11-29 00:43:32,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:43:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2023-11-29 00:43:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 00:43:32,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:43:32,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:32,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 00:43:32,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:32,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:43:32,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2032713776, now seen corresponding path program 5 times [2023-11-29 00:43:32,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:32,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517229505] [2023-11-29 00:43:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:32,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:43:32,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880576758] [2023-11-29 00:43:32,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:43:32,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:32,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:32,679 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:32,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:43:32,877 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 00:43:32,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:32,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 00:43:32,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:32,930 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 11 treesize of output 7 [2023-11-29 00:43:32,948 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 [2023-11-29 00:43:32,992 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 18 [2023-11-29 00:43:33,011 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 23 treesize of output 11 [2023-11-29 00:43:33,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:43:33,067 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 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-29 00:43:33,086 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 30 treesize of output 21 [2023-11-29 00:43:33,826 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-29 00:43:33,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 87 [2023-11-29 00:43:33,881 INFO L349 Elim1Store]: treesize reduction 69, result has 1.4 percent of original size [2023-11-29 00:43:33,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 101 [2023-11-29 00:43:33,893 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-29 00:43:34,635 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-29 00:43:34,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 220 treesize of output 209 [2023-11-29 00:43:34,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,714 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:43:34,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 439 [2023-11-29 00:43:34,812 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-29 00:43:34,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:34,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:43:34,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:43:34,996 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:43:34,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 244 [2023-11-29 00:43:38,189 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 227 treesize of output 207 [2023-11-29 00:43:38,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,205 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:43:38,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,229 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:43:38,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 46 [2023-11-29 00:43:38,249 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 108 treesize of output 96 [2023-11-29 00:43:38,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:38,277 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:43:38,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2023-11-29 00:43:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:39,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:54,934 WARN L293 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:44:02,945 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:45:10,948 WARN L293 SmtUtils]: Spent 26.66s on a formula simplification that was a NOOP. DAG size: 108 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:46:18,535 WARN L293 SmtUtils]: Spent 42.01s on a formula simplification that was a NOOP. DAG size: 112 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:46:18,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:46:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517229505] [2023-11-29 00:46:18,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:46:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880576758] [2023-11-29 00:46:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880576758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:46:18,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:46:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-11-29 00:46:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197877171] [2023-11-29 00:46:18,538 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:46:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:46:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:46:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:46:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=897, Unknown=8, NotChecked=0, Total=1056 [2023-11-29 00:46:18,540 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:46:28,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:40,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:46:44,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:46:49,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:46:49,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:46:49,879 INFO L93 Difference]: Finished difference Result 126 states and 149 transitions. [2023-11-29 00:46:49,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:46:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-29 00:46:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:46:49,881 INFO L225 Difference]: With dead ends: 126 [2023-11-29 00:46:49,881 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 00:46:49,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 144.6s TimeCoverageRelationStatistics Valid=242, Invalid=1470, Unknown=10, NotChecked=0, Total=1722 [2023-11-29 00:46:49,883 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 48 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:46:49,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 200 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 435 Invalid, 4 Unknown, 0 Unchecked, 18.1s Time] [2023-11-29 00:46:49,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 00:46:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 98. [2023-11-29 00:46:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 81 states have internal predecessors, (97), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 00:46:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2023-11-29 00:46:49,928 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 29 [2023-11-29 00:46:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:46:49,928 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2023-11-29 00:46:49,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:46:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2023-11-29 00:46:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 00:46:49,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:46:49,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:46:49,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:46:50,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:46:50,130 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:46:50,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1561188942, now seen corresponding path program 3 times [2023-11-29 00:46:50,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:46:50,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247847861] [2023-11-29 00:46:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:46:50,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:46:50,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:46:50,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286886059] [2023-11-29 00:46:50,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:46:50,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:46:50,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:46:50,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:46:50,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ce2642-3899-4a15-9ac7-37ccc96397ca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:46:50,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 00:46:50,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:46:50,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-29 00:46:50,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:50,428 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 11 treesize of output 7 [2023-11-29 00:46:50,436 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 [2023-11-29 00:46:50,461 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 18 [2023-11-29 00:46:50,473 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 23 treesize of output 11 [2023-11-29 00:46:50,546 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 00:46:50,546 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 3 case distinctions, treesize of input 28 treesize of output 30 [2023-11-29 00:46:50,578 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2023-11-29 00:46:50,578 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 2 case distinctions, treesize of input 34 treesize of output 29 [2023-11-29 00:46:51,429 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-29 00:46:51,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 102 treesize of output 95 [2023-11-29 00:46:51,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:51,517 INFO L349 Elim1Store]: treesize reduction 97, result has 1.0 percent of original size [2023-11-29 00:46:51,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 59 treesize of output 105 [2023-11-29 00:46:51,534 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-29 00:46:52,323 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-29 00:46:52,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 218 treesize of output 195 [2023-11-29 00:46:52,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:52,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:52,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:52,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:52,482 INFO L349 Elim1Store]: treesize reduction 146, result has 0.7 percent of original size [2023-11-29 00:46:52,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 131 treesize of output 295 [2023-11-29 00:46:52,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:52,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:52,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:52,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:53,031 INFO L349 Elim1Store]: treesize reduction 118, result has 21.9 percent of original size [2023-11-29 00:46:53,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 186 treesize of output 191 [2023-11-29 00:46:58,684 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 858 treesize of output 804 [2023-11-29 00:46:58,694 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 804 treesize of output 742 [2023-11-29 00:46:58,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:58,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:59,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:46:59,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 1089 treesize of output 1145 [2023-11-29 00:46:59,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:59,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:46:59,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:46:59,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 1435 treesize of output 1395