./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-29.i --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_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme --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 fccc32608678fc6fd4cb86e7f394d0f05414cafa3a24a1c8162582b5a3f5da8c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:51:55,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:51:55,560 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:51:55,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:51:55,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:51:55,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:51:55,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:51:55,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:51:55,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:51:55,611 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:51:55,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:51:55,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:51:55,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:51:55,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:51:55,614 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:51:55,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:51:55,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:51:55,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:51:55,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:51:55,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:51:55,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:51:55,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:51:55,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:51:55,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:51:55,620 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:51:55,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:51:55,633 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:51:55,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:51:55,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:51:55,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:51:55,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:51:55,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:55,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:51:55,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:51:55,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:51:55,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:51:55,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:51:55,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:51:55,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:51:55,638 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:51:55,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:51:55,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:51:55,639 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_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fccc32608678fc6fd4cb86e7f394d0f05414cafa3a24a1c8162582b5a3f5da8c [2023-11-26 11:51:55,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:51:56,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:51:56,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:51:56,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:51:56,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:51:56,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-29.i [2023-11-26 11:51:59,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:51:59,461 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:51:59,462 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-29.i [2023-11-26 11:51:59,485 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/data/861b80f31/094b8488d1c54f92b68c358ce09a449f/FLAG321422e83 [2023-11-26 11:51:59,497 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/data/861b80f31/094b8488d1c54f92b68c358ce09a449f [2023-11-26 11:51:59,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:51:59,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:51:59,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:59,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:51:59,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:51:59,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:51:59,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c253f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59, skipping insertion in model container [2023-11-26 11:51:59,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:51:59,558 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:51:59,716 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_a02bb728-0c8f-4c44-bf95-a8192775ea5f/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-29.i[916,929] [2023-11-26 11:51:59,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:59,829 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:51:59,841 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_a02bb728-0c8f-4c44-bf95-a8192775ea5f/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-29.i[916,929] [2023-11-26 11:51:59,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:59,924 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:51:59,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59 WrapperNode [2023-11-26 11:51:59,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:59,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:59,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:51:59,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:51:59,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:51:59,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,060 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 272 [2023-11-26 11:52:00,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:00,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:52:00,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:52:00,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:52:00,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,131 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:52:00,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:52:00,170 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:52:00,170 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:52:00,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:52:00,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (1/1) ... [2023-11-26 11:52:00,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:00,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:00,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:52:00,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:52:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:52:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:52:00,309 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:52:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:52:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:52:00,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:52:00,415 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:52:00,417 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:52:01,050 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:52:01,110 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:52:01,110 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:52:01,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:01 BoogieIcfgContainer [2023-11-26 11:52:01,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:52:01,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:52:01,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:52:01,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:52:01,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:51:59" (1/3) ... [2023-11-26 11:52:01,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92ccfe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:01, skipping insertion in model container [2023-11-26 11:52:01,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:59" (2/3) ... [2023-11-26 11:52:01,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92ccfe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:01, skipping insertion in model container [2023-11-26 11:52:01,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:01" (3/3) ... [2023-11-26 11:52:01,126 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-29.i [2023-11-26 11:52:01,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:52:01,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:52:01,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:52:01,226 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;@64c20e33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:52:01,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:52:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 68 states have (on average 1.4411764705882353) internal successors, (98), 69 states have internal predecessors, (98), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:52:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-26 11:52:01,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:01,261 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:01,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:01,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash 795203266, now seen corresponding path program 1 times [2023-11-26 11:52:01,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:01,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344511098] [2023-11-26 11:52:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:01,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:01,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344511098] [2023-11-26 11:52:01,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:52:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601352287] [2023-11-26 11:52:01,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:01,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:01,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:01,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:01,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:52:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:02,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:52:02,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-11-26 11:52:02,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601352287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:02,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:02,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:02,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47489595] [2023-11-26 11:52:02,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:02,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:52:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:02,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:52:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:52:02,164 INFO L87 Difference]: Start difference. First operand has 109 states, 68 states have (on average 1.4411764705882353) internal successors, (98), 69 states have internal predecessors, (98), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-26 11:52:02,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:02,270 INFO L93 Difference]: Finished difference Result 217 states and 385 transitions. [2023-11-26 11:52:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:52:02,273 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 238 [2023-11-26 11:52:02,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:02,287 INFO L225 Difference]: With dead ends: 217 [2023-11-26 11:52:02,288 INFO L226 Difference]: Without dead ends: 107 [2023-11-26 11:52:02,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:52:02,305 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:02,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:02,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-26 11:52:02,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-26 11:52:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:52:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 169 transitions. [2023-11-26 11:52:02,387 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 169 transitions. Word has length 238 [2023-11-26 11:52:02,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:02,388 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 169 transitions. [2023-11-26 11:52:02,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-26 11:52:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 169 transitions. [2023-11-26 11:52:02,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-26 11:52:02,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:02,396 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:02,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:52:02,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:52:02,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:02,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1831038838, now seen corresponding path program 1 times [2023-11-26 11:52:02,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:02,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823846489] [2023-11-26 11:52:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:02,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:02,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:02,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873374003] [2023-11-26 11:52:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:02,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:02,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:02,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:52:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:02,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:52:03,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:52:03,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:03,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823846489] [2023-11-26 11:52:03,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873374003] [2023-11-26 11:52:03,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873374003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:03,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:03,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:03,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761151912] [2023-11-26 11:52:03,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:03,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:03,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:03,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:03,119 INFO L87 Difference]: Start difference. First operand 107 states and 169 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:03,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:03,291 INFO L93 Difference]: Finished difference Result 313 states and 494 transitions. [2023-11-26 11:52:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:03,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2023-11-26 11:52:03,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:03,305 INFO L225 Difference]: With dead ends: 313 [2023-11-26 11:52:03,305 INFO L226 Difference]: Without dead ends: 207 [2023-11-26 11:52:03,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:03,308 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 148 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:03,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 422 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-26 11:52:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2023-11-26 11:52:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 126 states have (on average 1.3333333333333333) internal successors, (168), 126 states have internal predecessors, (168), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 11:52:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2023-11-26 11:52:03,357 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 238 [2023-11-26 11:52:03,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:03,359 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2023-11-26 11:52:03,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2023-11-26 11:52:03,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-26 11:52:03,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:03,370 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:03,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 11:52:03,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:03,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:03,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash -680587501, now seen corresponding path program 1 times [2023-11-26 11:52:03,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:03,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795076292] [2023-11-26 11:52:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:03,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:03,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:03,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397772570] [2023-11-26 11:52:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:03,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:03,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:03,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:03,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:52:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:03,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:52:03,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:52:03,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:03,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795076292] [2023-11-26 11:52:03,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397772570] [2023-11-26 11:52:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397772570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:03,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:03,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:03,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804370235] [2023-11-26 11:52:03,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:03,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:03,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:03,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:03,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:03,930 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:04,030 INFO L93 Difference]: Finished difference Result 415 states and 647 transitions. [2023-11-26 11:52:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:04,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 239 [2023-11-26 11:52:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:04,037 INFO L225 Difference]: With dead ends: 415 [2023-11-26 11:52:04,037 INFO L226 Difference]: Without dead ends: 211 [2023-11-26 11:52:04,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:04,042 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 151 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:04,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 339 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:04,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-26 11:52:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-11-26 11:52:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 130 states have (on average 1.3076923076923077) internal successors, (170), 130 states have internal predecessors, (170), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 11:52:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 322 transitions. [2023-11-26 11:52:04,105 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 322 transitions. Word has length 239 [2023-11-26 11:52:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:04,107 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 322 transitions. [2023-11-26 11:52:04,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 322 transitions. [2023-11-26 11:52:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-26 11:52:04,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:04,114 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:04,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:52:04,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:04,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:04,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:04,321 INFO L85 PathProgramCache]: Analyzing trace with hash -232073964, now seen corresponding path program 1 times [2023-11-26 11:52:04,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:04,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957295711] [2023-11-26 11:52:04,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:04,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:04,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:04,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718603581] [2023-11-26 11:52:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:04,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:04,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:04,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:04,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:52:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:04,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:52:04,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:52:08,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:08,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:08,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957295711] [2023-11-26 11:52:08,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:08,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718603581] [2023-11-26 11:52:08,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718603581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:08,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:08,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:52:08,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466702560] [2023-11-26 11:52:08,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:08,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:08,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:08,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:08,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:08,083 INFO L87 Difference]: Start difference. First operand 209 states and 322 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:08,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:08,975 INFO L93 Difference]: Finished difference Result 604 states and 910 transitions. [2023-11-26 11:52:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:52:08,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 240 [2023-11-26 11:52:08,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:08,986 INFO L225 Difference]: With dead ends: 604 [2023-11-26 11:52:08,986 INFO L226 Difference]: Without dead ends: 396 [2023-11-26 11:52:08,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:52:08,995 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 428 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:08,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 931 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:52:08,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-26 11:52:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 232. [2023-11-26 11:52:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 153 states have (on average 1.3398692810457515) internal successors, (205), 153 states have internal predecessors, (205), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 11:52:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 357 transitions. [2023-11-26 11:52:09,061 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 357 transitions. Word has length 240 [2023-11-26 11:52:09,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:09,062 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 357 transitions. [2023-11-26 11:52:09,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 357 transitions. [2023-11-26 11:52:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-26 11:52:09,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:09,069 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:09,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:09,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:09,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:09,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:09,278 INFO L85 PathProgramCache]: Analyzing trace with hash 26091474, now seen corresponding path program 1 times [2023-11-26 11:52:09,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:09,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746735625] [2023-11-26 11:52:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:09,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:09,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:09,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249069597] [2023-11-26 11:52:09,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:09,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:09,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:09,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:09,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:52:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:09,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 11:52:09,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:52:12,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:12,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:12,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746735625] [2023-11-26 11:52:12,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:12,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249069597] [2023-11-26 11:52:12,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249069597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:12,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:12,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:52:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783298960] [2023-11-26 11:52:12,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:12,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:12,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:12,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:12,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:12,022 INFO L87 Difference]: Start difference. First operand 232 states and 357 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:12,891 INFO L93 Difference]: Finished difference Result 627 states and 944 transitions. [2023-11-26 11:52:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:52:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 240 [2023-11-26 11:52:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:12,896 INFO L225 Difference]: With dead ends: 627 [2023-11-26 11:52:12,896 INFO L226 Difference]: Without dead ends: 396 [2023-11-26 11:52:12,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:52:12,898 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 414 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:12,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 992 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:52:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-26 11:52:12,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 232. [2023-11-26 11:52:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 153 states have (on average 1.3398692810457515) internal successors, (205), 153 states have internal predecessors, (205), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 11:52:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 357 transitions. [2023-11-26 11:52:12,927 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 357 transitions. Word has length 240 [2023-11-26 11:52:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:12,932 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 357 transitions. [2023-11-26 11:52:12,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 357 transitions. [2023-11-26 11:52:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-26 11:52:12,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:12,937 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:12,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:13,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:13,144 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:13,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash 788994390, now seen corresponding path program 1 times [2023-11-26 11:52:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:13,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368019858] [2023-11-26 11:52:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:13,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:13,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:13,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164382779] [2023-11-26 11:52:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:13,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:13,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:13,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:13,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:52:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:13,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:52:13,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-11-26 11:52:13,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-26 11:52:14,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368019858] [2023-11-26 11:52:14,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:14,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164382779] [2023-11-26 11:52:14,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164382779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:14,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:14,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 11:52:14,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49508229] [2023-11-26 11:52:14,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:14,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:52:14,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:52:14,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:52:14,193 INFO L87 Difference]: Start difference. First operand 232 states and 357 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-26 11:52:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:14,522 INFO L93 Difference]: Finished difference Result 467 states and 711 transitions. [2023-11-26 11:52:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 240 [2023-11-26 11:52:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:14,527 INFO L225 Difference]: With dead ends: 467 [2023-11-26 11:52:14,527 INFO L226 Difference]: Without dead ends: 236 [2023-11-26 11:52:14,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 472 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:14,529 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 57 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:14,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 275 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:14,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-26 11:52:14,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 154. [2023-11-26 11:52:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 113 states have internal predecessors, (154), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:52:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 230 transitions. [2023-11-26 11:52:14,552 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 230 transitions. Word has length 240 [2023-11-26 11:52:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:14,553 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 230 transitions. [2023-11-26 11:52:14,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2023-11-26 11:52:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 230 transitions. [2023-11-26 11:52:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-26 11:52:14,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:14,558 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:14,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:14,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:14,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:14,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash 428414896, now seen corresponding path program 1 times [2023-11-26 11:52:14,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:14,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850609189] [2023-11-26 11:52:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:14,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:14,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796668725] [2023-11-26 11:52:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:14,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:14,826 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:14,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:52:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:15,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:15,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 687 proven. 96 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2023-11-26 11:52:15,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 15 proven. 96 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-26 11:52:15,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:15,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850609189] [2023-11-26 11:52:15,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:15,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796668725] [2023-11-26 11:52:15,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796668725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:15,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:15,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-26 11:52:15,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493042581] [2023-11-26 11:52:15,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:15,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:52:15,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:15,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:52:15,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:15,706 INFO L87 Difference]: Start difference. First operand 154 states and 230 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-26 11:52:16,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:16,471 INFO L93 Difference]: Finished difference Result 405 states and 595 transitions. [2023-11-26 11:52:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 11:52:16,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 240 [2023-11-26 11:52:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:16,475 INFO L225 Difference]: With dead ends: 405 [2023-11-26 11:52:16,475 INFO L226 Difference]: Without dead ends: 252 [2023-11-26 11:52:16,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 471 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:52:16,477 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 295 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:16,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 502 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:52:16,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-26 11:52:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 160. [2023-11-26 11:52:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.347457627118644) internal successors, (159), 118 states have internal predecessors, (159), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:52:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 235 transitions. [2023-11-26 11:52:16,503 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 235 transitions. Word has length 240 [2023-11-26 11:52:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:16,504 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 235 transitions. [2023-11-26 11:52:16,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-26 11:52:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 235 transitions. [2023-11-26 11:52:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-26 11:52:16,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:16,509 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:16,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:16,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:52:16,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:16,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:16,717 INFO L85 PathProgramCache]: Analyzing trace with hash -713928274, now seen corresponding path program 1 times [2023-11-26 11:52:16,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:16,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745466896] [2023-11-26 11:52:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:16,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:16,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:16,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544450531] [2023-11-26 11:52:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:16,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:16,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:16,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:16,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:52:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:16,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:16,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:52:17,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:17,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:17,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745466896] [2023-11-26 11:52:17,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:17,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544450531] [2023-11-26 11:52:17,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544450531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:17,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:17,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:52:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299985047] [2023-11-26 11:52:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:17,007 INFO L87 Difference]: Start difference. First operand 160 states and 235 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:17,094 INFO L93 Difference]: Finished difference Result 359 states and 526 transitions. [2023-11-26 11:52:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:17,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 241 [2023-11-26 11:52:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:17,097 INFO L225 Difference]: With dead ends: 359 [2023-11-26 11:52:17,098 INFO L226 Difference]: Without dead ends: 195 [2023-11-26 11:52:17,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:52:17,099 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 54 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:17,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 507 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-26 11:52:17,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 164. [2023-11-26 11:52:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 122 states have (on average 1.3524590163934427) internal successors, (165), 122 states have internal predecessors, (165), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:52:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 241 transitions. [2023-11-26 11:52:17,121 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 241 transitions. Word has length 241 [2023-11-26 11:52:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:17,122 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 241 transitions. [2023-11-26 11:52:17,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:17,123 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 241 transitions. [2023-11-26 11:52:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-26 11:52:17,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:17,125 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:17,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-26 11:52:17,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 11:52:17,332 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:17,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:17,333 INFO L85 PathProgramCache]: Analyzing trace with hash -53439414, now seen corresponding path program 1 times [2023-11-26 11:52:17,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:17,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817179145] [2023-11-26 11:52:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:17,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:17,368 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:17,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453940187] [2023-11-26 11:52:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:17,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:17,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:17,370 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:17,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:52:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:17,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:52:17,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:52:18,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:18,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:18,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817179145] [2023-11-26 11:52:18,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:18,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453940187] [2023-11-26 11:52:18,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453940187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:18,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:18,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:52:18,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122805582] [2023-11-26 11:52:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:18,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:18,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:18,615 INFO L87 Difference]: Start difference. First operand 164 states and 241 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:19,030 INFO L93 Difference]: Finished difference Result 520 states and 764 transitions. [2023-11-26 11:52:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:19,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 241 [2023-11-26 11:52:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:19,034 INFO L225 Difference]: With dead ends: 520 [2023-11-26 11:52:19,034 INFO L226 Difference]: Without dead ends: 357 [2023-11-26 11:52:19,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:19,038 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 119 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:19,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 680 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-26 11:52:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 321. [2023-11-26 11:52:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 238 states have (on average 1.3361344537815125) internal successors, (318), 238 states have internal predecessors, (318), 76 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 11:52:19,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 470 transitions. [2023-11-26 11:52:19,091 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 470 transitions. Word has length 241 [2023-11-26 11:52:19,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:19,092 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 470 transitions. [2023-11-26 11:52:19,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:19,092 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 470 transitions. [2023-11-26 11:52:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-26 11:52:19,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:19,095 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:19,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:19,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:19,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:19,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:19,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1712253993, now seen corresponding path program 1 times [2023-11-26 11:52:19,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:19,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817936759] [2023-11-26 11:52:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:19,353 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:19,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502124374] [2023-11-26 11:52:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:19,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:19,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:19,358 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:19,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:52:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:19,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1203 proven. 78 refuted. 0 times theorem prover too weak. 1531 trivial. 0 not checked. [2023-11-26 11:52:19,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 33 proven. 78 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2023-11-26 11:52:20,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:20,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817936759] [2023-11-26 11:52:20,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:20,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502124374] [2023-11-26 11:52:20,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502124374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:20,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:20,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 11:52:20,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565425140] [2023-11-26 11:52:20,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:20,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:20,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:20,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:20,204 INFO L87 Difference]: Start difference. First operand 321 states and 470 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2023-11-26 11:52:21,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:21,118 INFO L93 Difference]: Finished difference Result 863 states and 1236 transitions. [2023-11-26 11:52:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:52:21,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) Word has length 241 [2023-11-26 11:52:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:21,125 INFO L225 Difference]: With dead ends: 863 [2023-11-26 11:52:21,125 INFO L226 Difference]: Without dead ends: 543 [2023-11-26 11:52:21,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:52:21,128 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 327 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:21,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 537 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:52:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-11-26 11:52:21,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 288. [2023-11-26 11:52:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 203 states have (on average 1.29064039408867) internal successors, (262), 203 states have internal predecessors, (262), 76 states have call successors, (76), 8 states have call predecessors, (76), 8 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 11:52:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 414 transitions. [2023-11-26 11:52:21,191 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 414 transitions. Word has length 241 [2023-11-26 11:52:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:21,192 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 414 transitions. [2023-11-26 11:52:21,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 3 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2023-11-26 11:52:21,193 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 414 transitions. [2023-11-26 11:52:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-26 11:52:21,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:21,196 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:21,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:21,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:52:21,404 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:21,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:21,405 INFO L85 PathProgramCache]: Analyzing trace with hash -573549653, now seen corresponding path program 1 times [2023-11-26 11:52:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:21,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135448776] [2023-11-26 11:52:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:21,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:21,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:21,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831794736] [2023-11-26 11:52:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:21,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:21,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:21,454 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:21,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:52:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:52:21,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:52:23,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:23,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:23,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135448776] [2023-11-26 11:52:23,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:23,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831794736] [2023-11-26 11:52:23,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831794736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:23,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:23,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:52:23,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525296691] [2023-11-26 11:52:23,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:23,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:23,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:23,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:23,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:23,649 INFO L87 Difference]: Start difference. First operand 288 states and 414 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:24,242 INFO L93 Difference]: Finished difference Result 539 states and 764 transitions. [2023-11-26 11:52:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:52:24,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 241 [2023-11-26 11:52:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:24,246 INFO L225 Difference]: With dead ends: 539 [2023-11-26 11:52:24,246 INFO L226 Difference]: Without dead ends: 393 [2023-11-26 11:52:24,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:52:24,248 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 203 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:24,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1197 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:52:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-11-26 11:52:24,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 320. [2023-11-26 11:52:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 235 states have (on average 1.2936170212765958) internal successors, (304), 235 states have internal predecessors, (304), 76 states have call successors, (76), 8 states have call predecessors, (76), 8 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 11:52:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 456 transitions. [2023-11-26 11:52:24,296 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 456 transitions. Word has length 241 [2023-11-26 11:52:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:24,297 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 456 transitions. [2023-11-26 11:52:24,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 456 transitions. [2023-11-26 11:52:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-26 11:52:24,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:24,300 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:24,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:24,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:52:24,511 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:24,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1190620441, now seen corresponding path program 1 times [2023-11-26 11:52:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:24,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080969218] [2023-11-26 11:52:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:24,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:24,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384728635] [2023-11-26 11:52:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:24,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:24,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:24,550 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:24,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:52:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:24,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:52:24,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:52:25,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:25,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:25,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080969218] [2023-11-26 11:52:25,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:25,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384728635] [2023-11-26 11:52:25,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384728635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:25,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:25,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:52:25,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838433860] [2023-11-26 11:52:25,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:25,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:25,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:52:25,102 INFO L87 Difference]: Start difference. First operand 320 states and 456 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:25,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:25,405 INFO L93 Difference]: Finished difference Result 701 states and 998 transitions. [2023-11-26 11:52:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:25,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 242 [2023-11-26 11:52:25,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:25,410 INFO L225 Difference]: With dead ends: 701 [2023-11-26 11:52:25,410 INFO L226 Difference]: Without dead ends: 533 [2023-11-26 11:52:25,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:52:25,412 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 136 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:25,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 569 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:52:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-26 11:52:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 408. [2023-11-26 11:52:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 281 states have (on average 1.2526690391459074) internal successors, (352), 281 states have internal predecessors, (352), 114 states have call successors, (114), 12 states have call predecessors, (114), 12 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-26 11:52:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 580 transitions. [2023-11-26 11:52:25,485 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 580 transitions. Word has length 242 [2023-11-26 11:52:25,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:25,486 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 580 transitions. [2023-11-26 11:52:25,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:25,486 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 580 transitions. [2023-11-26 11:52:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-26 11:52:25,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:25,488 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:25,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:25,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:52:25,695 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:25,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1785606937, now seen corresponding path program 1 times [2023-11-26 11:52:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:25,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038616264] [2023-11-26 11:52:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:25,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:25,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546858404] [2023-11-26 11:52:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:25,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:25,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:25,735 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:25,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:52:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:26,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-26 11:52:26,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1119 proven. 456 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-26 11:52:29,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 9 proven. 315 refuted. 0 times theorem prover too weak. 2488 trivial. 0 not checked. [2023-11-26 11:52:35,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:35,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038616264] [2023-11-26 11:52:35,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:35,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546858404] [2023-11-26 11:52:35,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546858404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:35,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:52:35,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38 [2023-11-26 11:52:35,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510354919] [2023-11-26 11:52:35,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:35,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-26 11:52:35,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:35,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-26 11:52:35,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2023-11-26 11:52:35,320 INFO L87 Difference]: Start difference. First operand 408 states and 580 transitions. Second operand has 38 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 36 states have internal predecessors, (127), 7 states have call successors, (74), 5 states have call predecessors, (74), 10 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) [2023-11-26 11:52:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:39,241 INFO L93 Difference]: Finished difference Result 1075 states and 1478 transitions. [2023-11-26 11:52:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-26 11:52:39,242 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 36 states have internal predecessors, (127), 7 states have call successors, (74), 5 states have call predecessors, (74), 10 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) Word has length 242 [2023-11-26 11:52:39,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:39,250 INFO L225 Difference]: With dead ends: 1075 [2023-11-26 11:52:39,250 INFO L226 Difference]: Without dead ends: 756 [2023-11-26 11:52:39,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 444 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1551, Invalid=4769, Unknown=0, NotChecked=0, Total=6320 [2023-11-26 11:52:39,256 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1199 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:39,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1025 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 11:52:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-11-26 11:52:39,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 503. [2023-11-26 11:52:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 364 states have (on average 1.2554945054945055) internal successors, (457), 364 states have internal predecessors, (457), 114 states have call successors, (114), 24 states have call predecessors, (114), 24 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-26 11:52:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 685 transitions. [2023-11-26 11:52:39,372 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 685 transitions. Word has length 242 [2023-11-26 11:52:39,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:39,373 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 685 transitions. [2023-11-26 11:52:39,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 36 states have internal predecessors, (127), 7 states have call successors, (74), 5 states have call predecessors, (74), 10 states have return successors, (75), 7 states have call predecessors, (75), 7 states have call successors, (75) [2023-11-26 11:52:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 685 transitions. [2023-11-26 11:52:39,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-26 11:52:39,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:39,377 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:39,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:39,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:52:39,584 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:39,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2039714598, now seen corresponding path program 1 times [2023-11-26 11:52:39,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:39,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398363488] [2023-11-26 11:52:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:39,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:39,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949366002] [2023-11-26 11:52:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:39,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:39,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:39,627 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:39,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:52:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:39,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 11:52:39,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-11-26 11:52:41,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398363488] [2023-11-26 11:52:41,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:52:41,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949366002] [2023-11-26 11:52:41,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949366002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:41,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:41,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:52:41,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515858853] [2023-11-26 11:52:41,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:41,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:41,481 INFO L87 Difference]: Start difference. First operand 503 states and 685 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:42,053 INFO L93 Difference]: Finished difference Result 974 states and 1329 transitions. [2023-11-26 11:52:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:52:42,054 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 242 [2023-11-26 11:52:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:42,058 INFO L225 Difference]: With dead ends: 974 [2023-11-26 11:52:42,058 INFO L226 Difference]: Without dead ends: 576 [2023-11-26 11:52:42,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:52:42,061 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 190 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:42,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 793 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:52:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-26 11:52:42,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 514. [2023-11-26 11:52:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 375 states have (on average 1.2613333333333334) internal successors, (473), 375 states have internal predecessors, (473), 114 states have call successors, (114), 24 states have call predecessors, (114), 24 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-26 11:52:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 701 transitions. [2023-11-26 11:52:42,142 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 701 transitions. Word has length 242 [2023-11-26 11:52:42,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:42,143 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 701 transitions. [2023-11-26 11:52:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-11-26 11:52:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 701 transitions. [2023-11-26 11:52:42,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-26 11:52:42,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:42,146 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:42,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:42,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:52:42,353 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:42,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1564817384, now seen corresponding path program 1 times [2023-11-26 11:52:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:42,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517131320] [2023-11-26 11:52:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:42,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:42,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:52:42,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626029160] [2023-11-26 11:52:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:42,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:42,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:42,423 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:42,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02bb728-0c8f-4c44-bf95-a8192775ea5f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:52:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:42,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-26 11:52:42,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1185 proven. 369 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2023-11-26 11:52:45,948 INFO L327 TraceCheckSpWp]: Computing backward predicates...