./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a93c350e5795e32421c3bef9d7525c3fd53f570f971d574def19132b3d6f08b8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:12:28,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:12:28,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:12:28,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:12:28,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:12:28,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:12:28,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:12:28,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:12:28,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:12:28,624 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:12:28,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:12:28,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:12:28,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:12:28,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:12:28,627 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:12:28,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:12:28,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:12:28,630 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:12:28,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:12:28,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:12:28,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:12:28,633 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:12:28,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:12:28,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:12:28,635 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:12:28,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:12:28,636 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:12:28,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:12:28,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:12:28,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:12:28,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:12:28,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:12:28,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:12:28,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:12:28,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:12:28,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:12:28,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:12:28,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:12:28,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:12:28,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:12:28,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:12:28,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:12:28,642 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_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a93c350e5795e32421c3bef9d7525c3fd53f570f971d574def19132b3d6f08b8 [2023-11-29 00:12:28,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:12:28,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:12:28,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:12:28,925 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:12:28,926 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:12:28,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2023-11-29 00:12:32,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:12:32,376 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:12:32,377 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2023-11-29 00:12:32,387 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/data/f42d18c9e/b8357ede62274f44af48c6f1eeb1ec77/FLAG074c29491 [2023-11-29 00:12:32,401 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/data/f42d18c9e/b8357ede62274f44af48c6f1eeb1ec77 [2023-11-29 00:12:32,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:12:32,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:12:32,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:12:32,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:12:32,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:12:32,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4bd3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32, skipping insertion in model container [2023-11-29 00:12:32,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,439 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:12:32,593 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_8a8ce31c-87f2-4cee-84e9-854e87b702a4/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2023-11-29 00:12:32,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:12:32,627 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:12:32,640 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_8a8ce31c-87f2-4cee-84e9-854e87b702a4/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2023-11-29 00:12:32,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:12:32,666 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:12:32,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32 WrapperNode [2023-11-29 00:12:32,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:12:32,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:12:32,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:12:32,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:12:32,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,712 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2023-11-29 00:12:32,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:12:32,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:12:32,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:12:32,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:12:32,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,741 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]. [2023-11-29 00:12:32,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,747 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:12:32,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:12:32,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:12:32,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:12:32,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (1/1) ... [2023-11-29 00:12:32,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:12:32,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:32,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:12:32,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:12:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:12:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:12:32,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:12:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:12:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:12:32,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:12:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 00:12:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 00:12:32,934 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:12:32,937 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:12:33,145 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:12:33,166 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:12:33,166 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:12:33,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:12:33 BoogieIcfgContainer [2023-11-29 00:12:33,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:12:33,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:12:33,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:12:33,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:12:33,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:12:32" (1/3) ... [2023-11-29 00:12:33,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c81acf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:12:33, skipping insertion in model container [2023-11-29 00:12:33,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:12:32" (2/3) ... [2023-11-29 00:12:33,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c81acf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:12:33, skipping insertion in model container [2023-11-29 00:12:33,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:12:33" (3/3) ... [2023-11-29 00:12:33,188 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound5.c [2023-11-29 00:12:33,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:12:33,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:12:33,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:12:33,272 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;@2dd2ed57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:12:33,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:12:33,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 00:12:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 00:12:33,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:33,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:33,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:33,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 760957734, now seen corresponding path program 1 times [2023-11-29 00:12:33,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:33,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611834600] [2023-11-29 00:12:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:33,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:12:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:12:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:12:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:12:33,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:33,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611834600] [2023-11-29 00:12:33,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611834600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:33,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:33,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:12:33,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546390868] [2023-11-29 00:12:33,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:33,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:12:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:12:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:12:33,558 INFO L87 Difference]: Start difference. First operand has 30 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:12:33,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:33,594 INFO L93 Difference]: Finished difference Result 58 states and 99 transitions. [2023-11-29 00:12:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:12:33,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2023-11-29 00:12:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:33,606 INFO L225 Difference]: With dead ends: 58 [2023-11-29 00:12:33,607 INFO L226 Difference]: Without dead ends: 28 [2023-11-29 00:12:33,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:12:33,615 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:33,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-29 00:12:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-29 00:12:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:12:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-11-29 00:12:33,659 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 23 [2023-11-29 00:12:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:33,660 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-11-29 00:12:33,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:12:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-11-29 00:12:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 00:12:33,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:33,663 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:33,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:12:33,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:33,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash -387749596, now seen corresponding path program 1 times [2023-11-29 00:12:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:33,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023114756] [2023-11-29 00:12:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:33,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:33,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:12:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:12:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:12:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:12:33,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:33,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023114756] [2023-11-29 00:12:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023114756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:33,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:33,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:12:33,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135218164] [2023-11-29 00:12:33,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:33,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:12:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:12:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:12:33,919 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 00:12:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:34,002 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2023-11-29 00:12:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:12:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-11-29 00:12:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:34,005 INFO L225 Difference]: With dead ends: 41 [2023-11-29 00:12:34,005 INFO L226 Difference]: Without dead ends: 39 [2023-11-29 00:12:34,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:12:34,008 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:34,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 118 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-29 00:12:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2023-11-29 00:12:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:12:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-11-29 00:12:34,026 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 23 [2023-11-29 00:12:34,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:34,026 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-11-29 00:12:34,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 00:12:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-11-29 00:12:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 00:12:34,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:34,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:12:34,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:34,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1391236353, now seen corresponding path program 1 times [2023-11-29 00:12:34,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:34,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190279657] [2023-11-29 00:12:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:34,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 00:12:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:12:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 00:12:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 00:12:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:12:34,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190279657] [2023-11-29 00:12:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190279657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:34,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:34,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:12:34,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152251152] [2023-11-29 00:12:34,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:34,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:12:34,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:34,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:12:34,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:12:34,230 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:12:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:34,315 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2023-11-29 00:12:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:12:34,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-11-29 00:12:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:34,318 INFO L225 Difference]: With dead ends: 45 [2023-11-29 00:12:34,318 INFO L226 Difference]: Without dead ends: 43 [2023-11-29 00:12:34,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:12:34,321 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:34,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:12:34,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-29 00:12:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2023-11-29 00:12:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:12:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-11-29 00:12:34,337 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2023-11-29 00:12:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:34,338 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-11-29 00:12:34,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:12:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-29 00:12:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 00:12:34,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:34,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:34,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:12:34,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:34,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:34,341 INFO L85 PathProgramCache]: Analyzing trace with hash 831418820, now seen corresponding path program 1 times [2023-11-29 00:12:34,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:34,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230126871] [2023-11-29 00:12:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:34,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:34,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:12:34,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783967043] [2023-11-29 00:12:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:34,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:34,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:34,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:34,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:12:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:34,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:12:34,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 00:12:34,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 00:12:34,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:34,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230126871] [2023-11-29 00:12:34,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:12:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783967043] [2023-11-29 00:12:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783967043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:12:34,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:12:34,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-29 00:12:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826680203] [2023-11-29 00:12:34,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:12:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:12:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:12:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:12:34,813 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 00:12:35,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:35,221 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2023-11-29 00:12:35,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:12:35,222 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 33 [2023-11-29 00:12:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:35,225 INFO L225 Difference]: With dead ends: 71 [2023-11-29 00:12:35,225 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 00:12:35,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:12:35,228 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:35,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 105 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:12:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 00:12:35,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2023-11-29 00:12:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 00:12:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2023-11-29 00:12:35,251 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 33 [2023-11-29 00:12:35,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:35,251 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2023-11-29 00:12:35,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 00:12:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2023-11-29 00:12:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 00:12:35,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:35,254 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:35,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:12:35,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:35,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:35,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1016562388, now seen corresponding path program 1 times [2023-11-29 00:12:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:35,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301388898] [2023-11-29 00:12:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:35,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:12:35,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216451992] [2023-11-29 00:12:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:35,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:35,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:35,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:35,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:12:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:35,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:12:35,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:12:35,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:12:35,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:35,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301388898] [2023-11-29 00:12:35,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:12:35,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216451992] [2023-11-29 00:12:35,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216451992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:35,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:35,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:12:35,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476510708] [2023-11-29 00:12:35,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:35,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:12:35,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:12:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:12:35,904 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 00:12:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:36,158 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2023-11-29 00:12:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:12:36,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2023-11-29 00:12:36,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:36,161 INFO L225 Difference]: With dead ends: 66 [2023-11-29 00:12:36,162 INFO L226 Difference]: Without dead ends: 55 [2023-11-29 00:12:36,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:12:36,164 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:36,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 120 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:12:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-29 00:12:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-29 00:12:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 00:12:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2023-11-29 00:12:36,187 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 40 [2023-11-29 00:12:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:36,188 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2023-11-29 00:12:36,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 00:12:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2023-11-29 00:12:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 00:12:36,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:36,190 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:36,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 00:12:36,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:36,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:36,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2057146835, now seen corresponding path program 1 times [2023-11-29 00:12:36,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:36,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528579591] [2023-11-29 00:12:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:36,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:12:36,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474476558] [2023-11-29 00:12:36,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:36,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:36,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:36,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:36,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:12:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:36,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 00:12:36,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 00:12:37,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-29 00:12:37,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:37,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528579591] [2023-11-29 00:12:37,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:12:37,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474476558] [2023-11-29 00:12:37,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474476558] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:12:37,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:12:37,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2023-11-29 00:12:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908069379] [2023-11-29 00:12:37,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:12:37,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:12:37,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:37,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:12:37,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:12:37,343 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-29 00:12:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:37,920 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2023-11-29 00:12:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:12:37,921 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 57 [2023-11-29 00:12:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:37,923 INFO L225 Difference]: With dead ends: 96 [2023-11-29 00:12:37,924 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 00:12:37,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:12:37,926 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 41 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:37,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 306 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:12:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 00:12:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2023-11-29 00:12:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 54 states have internal predecessors, (59), 23 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 00:12:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2023-11-29 00:12:37,960 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 57 [2023-11-29 00:12:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:37,961 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2023-11-29 00:12:37,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-29 00:12:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2023-11-29 00:12:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 00:12:37,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:37,964 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:37,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:12:38,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:38,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:38,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1282123871, now seen corresponding path program 1 times [2023-11-29 00:12:38,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:38,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934433405] [2023-11-29 00:12:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:38,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:12:38,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131868849] [2023-11-29 00:12:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:38,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:38,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:38,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:38,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:12:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:38,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 00:12:38,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-29 00:12:38,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 00:12:42,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:42,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934433405] [2023-11-29 00:12:42,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:12:42,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131868849] [2023-11-29 00:12:42,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131868849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:12:42,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:12:42,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-11-29 00:12:42,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940738853] [2023-11-29 00:12:42,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:12:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:12:42,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:12:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:12:42,314 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-29 00:12:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:51,799 INFO L93 Difference]: Finished difference Result 148 states and 197 transitions. [2023-11-29 00:12:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:12:51,799 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 70 [2023-11-29 00:12:51,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:51,802 INFO L225 Difference]: With dead ends: 148 [2023-11-29 00:12:51,802 INFO L226 Difference]: Without dead ends: 127 [2023-11-29 00:12:51,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:12:51,804 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 88 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:51,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 249 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 00:12:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-29 00:12:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 99. [2023-11-29 00:12:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 63 states have internal predecessors, (71), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 00:12:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 124 transitions. [2023-11-29 00:12:51,850 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 124 transitions. Word has length 70 [2023-11-29 00:12:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:51,851 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 124 transitions. [2023-11-29 00:12:51,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-29 00:12:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 124 transitions. [2023-11-29 00:12:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 00:12:51,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:51,855 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:51,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:12:52,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:52,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:52,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1411586487, now seen corresponding path program 1 times [2023-11-29 00:12:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:52,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759486040] [2023-11-29 00:12:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:52,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:12:52,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680787288] [2023-11-29 00:12:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:52,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:52,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:52,074 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:52,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:12:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:52,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:12:52,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-29 00:12:52,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:52,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759486040] [2023-11-29 00:12:52,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:12:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680787288] [2023-11-29 00:12:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680787288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:12:52,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:12:52,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-29 00:12:52,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151730737] [2023-11-29 00:12:52,886 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:12:52,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:12:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:12:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:12:52,888 INFO L87 Difference]: Start difference. First operand 99 states and 124 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-29 00:12:53,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:53,555 INFO L93 Difference]: Finished difference Result 113 states and 141 transitions. [2023-11-29 00:12:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:12:53,556 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 81 [2023-11-29 00:12:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:53,558 INFO L225 Difference]: With dead ends: 113 [2023-11-29 00:12:53,558 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 00:12:53,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:12:53,560 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:53,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 328 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:12:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 00:12:53,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-29 00:12:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 65 states have internal predecessors, (72), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-29 00:12:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2023-11-29 00:12:53,618 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 81 [2023-11-29 00:12:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:53,619 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2023-11-29 00:12:53,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-29 00:12:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2023-11-29 00:12:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 00:12:53,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:53,622 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:53,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:12:53,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:53,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:53,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:53,829 INFO L85 PathProgramCache]: Analyzing trace with hash -302279341, now seen corresponding path program 2 times [2023-11-29 00:12:53,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:53,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155918106] [2023-11-29 00:12:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:53,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:12:53,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865799206] [2023-11-29 00:12:53,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:12:53,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:53,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:53,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:53,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:12:53,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:12:53,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:12:53,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:12:53,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 00:12:53,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 00:12:54,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:54,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155918106] [2023-11-29 00:12:54,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:12:54,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865799206] [2023-11-29 00:12:54,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865799206] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:12:54,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:12:54,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-11-29 00:12:54,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491764161] [2023-11-29 00:12:54,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:12:54,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:12:54,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:54,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:12:54,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:12:54,080 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-29 00:12:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:54,170 INFO L93 Difference]: Finished difference Result 129 states and 162 transitions. [2023-11-29 00:12:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:12:54,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 83 [2023-11-29 00:12:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:54,173 INFO L225 Difference]: With dead ends: 129 [2023-11-29 00:12:54,173 INFO L226 Difference]: Without dead ends: 99 [2023-11-29 00:12:54,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:12:54,175 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:54,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-29 00:12:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-29 00:12:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 62 states have internal predecessors, (68), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 00:12:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2023-11-29 00:12:54,210 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 83 [2023-11-29 00:12:54,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:54,211 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2023-11-29 00:12:54,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-29 00:12:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2023-11-29 00:12:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:12:54,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:54,214 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:54,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 00:12:54,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:54,420 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:54,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:54,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1209712204, now seen corresponding path program 3 times [2023-11-29 00:12:54,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:54,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176549961] [2023-11-29 00:12:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:54,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:54,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:12:54,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320802093] [2023-11-29 00:12:54,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:12:54,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:54,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:54,437 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:54,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:12:54,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 00:12:54,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:12:54,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 00:12:54,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 29 proven. 27 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-29 00:12:55,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:16,900 WARN L293 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 135 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:14:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-11-29 00:14:24,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:24,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176549961] [2023-11-29 00:14:24,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:24,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320802093] [2023-11-29 00:14:24,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320802093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:24,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:24,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2023-11-29 00:14:24,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159231543] [2023-11-29 00:14:24,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:24,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 00:14:24,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:24,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 00:14:24,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:14:24,032 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-29 00:15:07,205 WARN L293 SmtUtils]: Spent 41.77s on a formula simplification. DAG size of input: 192 DAG size of output: 94 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:15:16,092 WARN L293 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 70 DAG size of output: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:15:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:22,758 INFO L93 Difference]: Finished difference Result 236 states and 317 transitions. [2023-11-29 00:15:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:15:22,759 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 100 [2023-11-29 00:15:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:22,761 INFO L225 Difference]: With dead ends: 236 [2023-11-29 00:15:22,761 INFO L226 Difference]: Without dead ends: 193 [2023-11-29 00:15:22,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 65.5s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 00:15:22,764 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 169 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:22,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 509 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 00:15:22,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-29 00:15:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 164. [2023-11-29 00:15:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.188118811881188) internal successors, (120), 103 states have internal predecessors, (120), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-29 00:15:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2023-11-29 00:15:22,842 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 100 [2023-11-29 00:15:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:22,843 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2023-11-29 00:15:22,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-29 00:15:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2023-11-29 00:15:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 00:15:22,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:22,845 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:22,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:15:23,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:23,046 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:23,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:23,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2000529897, now seen corresponding path program 4 times [2023-11-29 00:15:23,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:23,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068464253] [2023-11-29 00:15:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:23,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:23,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309647506] [2023-11-29 00:15:23,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:15:23,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:23,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:23,056 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:23,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:15:23,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:15:23,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:23,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 00:15:23,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 48 proven. 51 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-29 00:15:23,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-11-29 00:15:46,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:46,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068464253] [2023-11-29 00:15:46,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:46,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309647506] [2023-11-29 00:15:46,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309647506] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:46,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:46,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2023-11-29 00:15:46,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156847910] [2023-11-29 00:15:46,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:46,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 00:15:46,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:46,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 00:15:46,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:15:46,331 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 26 states have internal predecessors, (50), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 16 states have call predecessors, (34), 16 states have call successors, (34) [2023-11-29 00:16:06,934 WARN L293 SmtUtils]: Spent 19.48s on a formula simplification. DAG size of input: 153 DAG size of output: 56 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:16:09,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 00:16:12,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 00:16:28,324 WARN L293 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 51 DAG size of output: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:16:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:32,826 INFO L93 Difference]: Finished difference Result 216 states and 271 transitions. [2023-11-29 00:16:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 00:16:32,827 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 26 states have internal predecessors, (50), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 16 states have call predecessors, (34), 16 states have call successors, (34) Word has length 105 [2023-11-29 00:16:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:32,829 INFO L225 Difference]: With dead ends: 216 [2023-11-29 00:16:32,829 INFO L226 Difference]: Without dead ends: 167 [2023-11-29 00:16:32,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 44.6s TimeCoverageRelationStatistics Valid=389, Invalid=1681, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 00:16:32,831 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 76 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:32,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 345 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-29 00:16:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-29 00:16:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2023-11-29 00:16:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 99 states have (on average 1.121212121212121) internal successors, (111), 102 states have internal predecessors, (111), 40 states have call successors, (40), 19 states have call predecessors, (40), 19 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 00:16:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2023-11-29 00:16:32,900 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 105 [2023-11-29 00:16:32,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:32,900 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2023-11-29 00:16:32,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 26 states have internal predecessors, (50), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 16 states have call predecessors, (34), 16 states have call successors, (34) [2023-11-29 00:16:32,900 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2023-11-29 00:16:32,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 00:16:32,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:32,902 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:16:32,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:16:33,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:33,103 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:16:33,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:33,103 INFO L85 PathProgramCache]: Analyzing trace with hash 924515754, now seen corresponding path program 2 times [2023-11-29 00:16:33,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:33,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043396631] [2023-11-29 00:16:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:33,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:33,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:16:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128901775] [2023-11-29 00:16:33,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:16:33,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:33,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:33,114 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:33,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:16:33,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:16:33,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:16:33,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 00:16:33,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 32 proven. 74 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-11-29 00:16:34,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-11-29 00:16:48,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043396631] [2023-11-29 00:16:48,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:16:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128901775] [2023-11-29 00:16:48,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128901775] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:48,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:16:48,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 30 [2023-11-29 00:16:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296608949] [2023-11-29 00:16:48,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:48,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 00:16:48,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 00:16:48,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:16:48,897 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand has 30 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 15 states have call predecessors, (36), 15 states have call successors, (36) [2023-11-29 00:17:00,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 00:17:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:06,778 INFO L93 Difference]: Finished difference Result 187 states and 226 transitions. [2023-11-29 00:17:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 00:17:06,779 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 15 states have call predecessors, (36), 15 states have call successors, (36) Word has length 111 [2023-11-29 00:17:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:06,780 INFO L225 Difference]: With dead ends: 187 [2023-11-29 00:17:06,780 INFO L226 Difference]: Without dead ends: 157 [2023-11-29 00:17:06,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=371, Invalid=1351, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 00:17:06,782 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 72 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:06,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 356 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 00:17:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-29 00:17:06,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 142. [2023-11-29 00:17:06,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 91 states have internal predecessors, (100), 34 states have call successors, (34), 18 states have call predecessors, (34), 18 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 00:17:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2023-11-29 00:17:06,872 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 111 [2023-11-29 00:17:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:06,873 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2023-11-29 00:17:06,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 15 states have call predecessors, (36), 15 states have call successors, (36) [2023-11-29 00:17:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2023-11-29 00:17:06,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 00:17:06,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:06,874 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:06,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:17:07,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 00:17:07,075 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:07,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash 678054389, now seen corresponding path program 1 times [2023-11-29 00:17:07,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:07,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118090790] [2023-11-29 00:17:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:07,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:17:07,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404707939] [2023-11-29 00:17:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:07,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:17:07,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:17:07,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:17:07,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:17:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:07,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:17:07,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:17:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2023-11-29 00:17:07,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:17:07,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:07,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118090790] [2023-11-29 00:17:07,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:17:07,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404707939] [2023-11-29 00:17:07,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404707939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:07,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:07,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:17:07,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75189330] [2023-11-29 00:17:07,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:07,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:17:07,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:17:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:17:07,239 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 00:17:07,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:07,345 INFO L93 Difference]: Finished difference Result 158 states and 185 transitions. [2023-11-29 00:17:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:17:07,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2023-11-29 00:17:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:07,347 INFO L225 Difference]: With dead ends: 158 [2023-11-29 00:17:07,347 INFO L226 Difference]: Without dead ends: 126 [2023-11-29 00:17:07,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:17:07,348 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:07,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-29 00:17:07,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-11-29 00:17:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 80 states have (on average 1.1125) internal successors, (89), 81 states have internal predecessors, (89), 28 states have call successors, (28), 17 states have call predecessors, (28), 17 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 00:17:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2023-11-29 00:17:07,415 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 117 [2023-11-29 00:17:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:07,416 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2023-11-29 00:17:07,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 00:17:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2023-11-29 00:17:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 00:17:07,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:07,417 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:07,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:17:07,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 00:17:07,618 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:07,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash 94041042, now seen corresponding path program 2 times [2023-11-29 00:17:07,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:07,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85804690] [2023-11-29 00:17:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:07,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:07,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:17:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896285174] [2023-11-29 00:17:07,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:17:07,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:17:07,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:17:07,627 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:17:07,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:17:07,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:17:07,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:17:07,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 00:17:07,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:17:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-11-29 00:17:08,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:17:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 51 proven. 72 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-29 00:17:39,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:39,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85804690] [2023-11-29 00:17:39,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:17:39,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896285174] [2023-11-29 00:17:39,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896285174] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:17:39,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:17:39,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2023-11-29 00:17:39,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068427654] [2023-11-29 00:17:39,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:17:39,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 00:17:39,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 00:17:39,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:17:39,172 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 26 states have internal predecessors, (54), 18 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 16 states have call predecessors, (40), 18 states have call successors, (40) [2023-11-29 00:17:56,267 WARN L293 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 139 DAG size of output: 25 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:18:04,630 WARN L293 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 76 DAG size of output: 28 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:18:14,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 00:18:16,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 00:18:20,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 00:18:22,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 00:18:28,730 WARN L293 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 46 DAG size of output: 17 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:18:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:30,066 INFO L93 Difference]: Finished difference Result 202 states and 264 transitions. [2023-11-29 00:18:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:18:30,067 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 26 states have internal predecessors, (54), 18 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 16 states have call predecessors, (40), 18 states have call successors, (40) Word has length 122 [2023-11-29 00:18:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:30,069 INFO L225 Difference]: With dead ends: 202 [2023-11-29 00:18:30,069 INFO L226 Difference]: Without dead ends: 195 [2023-11-29 00:18:30,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 00:18:30,071 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 76 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:30,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 480 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2023-11-29 00:18:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-29 00:18:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 179. [2023-11-29 00:18:30,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 113 states have internal predecessors, (128), 51 states have call successors, (51), 18 states have call predecessors, (51), 18 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-29 00:18:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 229 transitions. [2023-11-29 00:18:30,197 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 229 transitions. Word has length 122 [2023-11-29 00:18:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:30,198 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 229 transitions. [2023-11-29 00:18:30,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 26 states have internal predecessors, (54), 18 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 16 states have call predecessors, (40), 18 states have call successors, (40) [2023-11-29 00:18:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 229 transitions. [2023-11-29 00:18:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 00:18:30,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:30,200 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:30,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:18:30,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:18:30,400 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:30,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:30,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1038207041, now seen corresponding path program 5 times [2023-11-29 00:18:30,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:30,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774752514] [2023-11-29 00:18:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:30,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:30,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:18:30,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571587618] [2023-11-29 00:18:30,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:18:30,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:30,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:18:30,409 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:18:30,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:18:30,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-29 00:18:30,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:18:30,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 00:18:30,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:18:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 249 proven. 83 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-11-29 00:18:31,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:18:54,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:54,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774752514] [2023-11-29 00:18:54,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:18:54,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571587618] [2023-11-29 00:18:54,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571587618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:18:54,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:18:54,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 00:18:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691866750] [2023-11-29 00:18:54,342 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:18:54,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:18:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:18:54,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=576, Unknown=2, NotChecked=0, Total=702 [2023-11-29 00:18:54,343 INFO L87 Difference]: Start difference. First operand 179 states and 229 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 10 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) [2023-11-29 00:18:56,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:56,172 INFO L93 Difference]: Finished difference Result 231 states and 291 transitions. [2023-11-29 00:18:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:18:56,173 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 10 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) Word has length 130 [2023-11-29 00:18:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:56,174 INFO L225 Difference]: With dead ends: 231 [2023-11-29 00:18:56,174 INFO L226 Difference]: Without dead ends: 138 [2023-11-29 00:18:56,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=154, Invalid=774, Unknown=2, NotChecked=0, Total=930 [2023-11-29 00:18:56,175 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:56,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 258 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 464 Invalid, 1 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:18:56,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-29 00:18:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2023-11-29 00:18:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 86 states have internal predecessors, (93), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 00:18:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2023-11-29 00:18:56,247 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 130 [2023-11-29 00:18:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:56,247 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2023-11-29 00:18:56,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 10 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) [2023-11-29 00:18:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2023-11-29 00:18:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 00:18:56,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:56,249 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:56,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:18:56,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:18:56,449 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:56,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1567816513, now seen corresponding path program 3 times [2023-11-29 00:18:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724981793] [2023-11-29 00:18:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:56,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:56,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:18:56,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031826134] [2023-11-29 00:18:56,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:18:56,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:18:56,461 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:18:56,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:18:56,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 00:18:56,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:18:56,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-29 00:18:56,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:19:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 187 proven. 38 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2023-11-29 00:19:03,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:19:22,036 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:19:51,652 WARN L293 SmtUtils]: Spent 26.89s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:20:14,324 WARN L293 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 60 DAG size of output: 58 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:20:14,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:20:14,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724981793] [2023-11-29 00:20:14,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:20:14,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031826134] [2023-11-29 00:20:14,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031826134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:20:14,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:20:14,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-29 00:20:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746428199] [2023-11-29 00:20:14,326 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:20:14,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:20:14,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:20:14,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:20:14,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=544, Unknown=2, NotChecked=0, Total=650 [2023-11-29 00:20:14,327 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-29 00:20:21,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:20:21,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:20:21,933 INFO L93 Difference]: Finished difference Result 158 states and 191 transitions. [2023-11-29 00:20:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:20:21,934 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 130 [2023-11-29 00:20:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:20:21,936 INFO L225 Difference]: With dead ends: 158 [2023-11-29 00:20:21,936 INFO L226 Difference]: Without dead ends: 154 [2023-11-29 00:20:21,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=166, Invalid=824, Unknown=2, NotChecked=0, Total=992 [2023-11-29 00:20:21,937 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:20:21,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 353 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 00:20:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-29 00:20:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2023-11-29 00:20:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 88 states have (on average 1.1022727272727273) internal successors, (97), 90 states have internal predecessors, (97), 34 states have call successors, (34), 18 states have call predecessors, (34), 17 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 00:20:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2023-11-29 00:20:22,021 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 130 [2023-11-29 00:20:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:20:22,021 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2023-11-29 00:20:22,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-29 00:20:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2023-11-29 00:20:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 00:20:22,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:20:22,022 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:20:22,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:20:22,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:20:22,223 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:20:22,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:20:22,223 INFO L85 PathProgramCache]: Analyzing trace with hash -628587115, now seen corresponding path program 1 times [2023-11-29 00:20:22,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:20:22,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007982770] [2023-11-29 00:20:22,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:20:22,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:20:22,232 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:20:22,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187891834] [2023-11-29 00:20:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:20:22,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:20:22,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:20:22,233 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:20:22,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:20:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:22,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-29 00:20:22,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:20:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 39 proven. 121 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2023-11-29 00:20:24,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:20:25,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:20:25,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007982770] [2023-11-29 00:20:25,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:20:25,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187891834] [2023-11-29 00:20:25,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187891834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:20:25,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:20:25,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-29 00:20:25,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145161675] [2023-11-29 00:20:25,807 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:20:25,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:20:25,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:20:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:20:25,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2023-11-29 00:20:25,809 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 11 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 9 states have call predecessors, (23), 10 states have call successors, (23) [2023-11-29 00:20:27,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:20:27,191 INFO L93 Difference]: Finished difference Result 160 states and 184 transitions. [2023-11-29 00:20:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:20:27,191 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 11 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 9 states have call predecessors, (23), 10 states have call successors, (23) Word has length 141 [2023-11-29 00:20:27,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:20:27,192 INFO L225 Difference]: With dead ends: 160 [2023-11-29 00:20:27,192 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 00:20:27,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:20:27,193 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:20:27,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 340 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:20:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 00:20:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 00:20:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 00:20:27,194 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 141 [2023-11-29 00:20:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:20:27,194 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 00:20:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 11 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 9 states have call predecessors, (23), 10 states have call successors, (23) [2023-11-29 00:20:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 00:20:27,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 00:20:27,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 00:20:27,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:20:27,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:20:27,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 00:21:14,132 WARN L293 SmtUtils]: Spent 46.26s on a formula simplification. DAG size of input: 390 DAG size of output: 584 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-11-29 00:21:24,478 WARN L293 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 584 DAG size of output: 31 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 00:21:31,276 INFO L895 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) [2023-11-29 00:21:31,277 INFO L899 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2023-11-29 00:21:31,277 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse6)) (.cse7 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse1 (<= .cse4 5)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| .cse4)) (.cse5 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse8 (* 2 .cse6))) (or (let ((.cse3 (* 8 .cse6))) (and (= |ULTIMATE.start_main_~p~0#1| 8) .cse0 .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| .cse3) (+ |ULTIMATE.start_main_~d~0#1| .cse4)) (= |ULTIMATE.start_main_~d~0#1| .cse3) (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse7 (= 2 |ULTIMATE.start_main_~p~0#1|) (= .cse8 |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse9) (and (<= .cse6 5) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse6) .cse0 .cse1 .cse2 .cse9) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse0 .cse7 .cse1 .cse2 .cse9 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ .cse5 .cse4) (+ .cse8 |ULTIMATE.start_main_~r~0#1|)))))) [2023-11-29 00:21:31,277 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2023-11-29 00:21:31,277 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 5) [2023-11-29 00:21:31,277 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 5) (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 5)) [2023-11-29 00:21:31,277 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse6)) (.cse7 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse1 (<= .cse4 5)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| .cse4)) (.cse5 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse8 (* 2 .cse6))) (or (let ((.cse3 (* 8 .cse6))) (and (= |ULTIMATE.start_main_~p~0#1| 8) .cse0 .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| .cse3) (+ |ULTIMATE.start_main_~d~0#1| .cse4)) (= |ULTIMATE.start_main_~d~0#1| .cse3) (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse7 (= 2 |ULTIMATE.start_main_~p~0#1|) (= .cse8 |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse9) (and (<= .cse6 5) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse6) .cse0 .cse1 .cse2 .cse9) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse0 .cse7 .cse1 .cse2 .cse9 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ .cse5 .cse4) (+ .cse8 |ULTIMATE.start_main_~r~0#1|)))))) [2023-11-29 00:21:31,277 INFO L895 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse6)) (.cse7 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse1 (<= .cse4 5)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| .cse4)) (.cse5 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse8 (* 2 .cse6))) (or (let ((.cse3 (* 8 .cse6))) (and (= |ULTIMATE.start_main_~p~0#1| 8) .cse0 .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| .cse3) (+ |ULTIMATE.start_main_~d~0#1| .cse4)) (= |ULTIMATE.start_main_~d~0#1| .cse3) (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse7 (= 2 |ULTIMATE.start_main_~p~0#1|) (= .cse8 |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse9) (and (<= .cse6 5) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse6) .cse0 .cse1 .cse2 .cse9) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse0 .cse7 .cse1 .cse2 .cse9 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ .cse5 .cse4) (+ .cse8 |ULTIMATE.start_main_~r~0#1|)))))) [2023-11-29 00:21:31,277 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 00:21:31,277 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-11-29 00:21:31,277 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2023-11-29 00:21:31,278 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 46 58) the Hoare annotation is: (let ((.cse7 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse29 (* 2 .cse7))) (let ((.cse24 (+ |ULTIMATE.start_main_~r~0#1| 1)) (.cse17 (+ .cse29 |ULTIMATE.start_main_~r~0#1|)) (.cse14 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse12 (* 2 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= 1 .cse7)) (.cse16 (+ |ULTIMATE.start_main_~d~0#1| .cse9)) (.cse8 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse2 (= |ULTIMATE.start_main_~d~0#1| .cse7)) (.cse0 (<= .cse7 5)) (.cse26 (<= |ULTIMATE.start_main_~d~0#1| .cse12)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| .cse9)) (.cse19 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse5 (= 2 |ULTIMATE.start_main_~q~0#1|)) (.cse15 (= .cse14 .cse9)) (.cse6 (= .cse9 .cse17)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse31 (* 4 .cse7)) (.cse30 (* (- 1) |ULTIMATE.start_main_~r~0#1|)) (.cse27 (<= .cse24 |ULTIMATE.start_main_~d~0#1|)) (.cse25 (= |ULTIMATE.start_main_~p~0#1| 4)) (.cse18 (= .cse9 (+ |ULTIMATE.start_main_~r~0#1| 4))) (.cse13 (<= 0 |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse9 5)) (.cse20 (= .cse7 1)) (.cse21 (= |ULTIMATE.start_main_~q~0#1| 4))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and (or (= (+ |ULTIMATE.start_main_~r~0#1| .cse7) (+ .cse8 |ULTIMATE.start_main_~d~0#1| .cse9)) (< |ULTIMATE.start_main_~r~0#1| (+ .cse8 |ULTIMATE.start_main_~d~0#1|))) .cse0 .cse1 .cse2 .cse3 .cse4 .cse10 .cse11) (and (<= (+ (* 2 |ULTIMATE.start_main_~d~0#1|) .cse12 1) .cse9) .cse1 .cse13 (= 3 |ULTIMATE.start_main_~q~0#1|) .cse4 (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) (= (+ |ULTIMATE.start_main_~r~0#1| (* 3 .cse7)) .cse9)) (and .cse0 .cse1 .cse3 (= |ULTIMATE.start_main_~q~0#1| 1) (<= 1 .cse14) .cse15 (= .cse16 .cse17)) (and .cse18 .cse19 .cse13 .cse20 .cse21 (= 2 |ULTIMATE.start_main_~d~0#1|) (exists ((|ULTIMATE.start_main_~q~0#1| Int) (v_y_64 Int)) (let ((.cse23 (* v_y_64 4))) (let ((.cse22 (+ .cse23 |ULTIMATE.start_main_~r~0#1|))) (and (<= .cse22 5) (= .cse23 (* v_y_64 |ULTIMATE.start_main_~q~0#1|)) (<= (* v_y_64 2) |ULTIMATE.start_main_~d~0#1|) (<= .cse24 .cse23) (<= 0 .cse22) (<= v_y_64 4294967295)))))) (and .cse25 .cse26 .cse4 .cse10 .cse11 .cse27 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ .cse8 .cse9) .cse17)) (let ((.cse28 (* 8 .cse7))) (and (= |ULTIMATE.start_main_~p~0#1| 8) .cse4 .cse10 (= (+ |ULTIMATE.start_main_~r~0#1| .cse28) .cse16) (= |ULTIMATE.start_main_~d~0#1| .cse28) .cse27 (<= .cse8 |ULTIMATE.start_main_~r~0#1|))) (and .cse1 (<= .cse24 .cse29) .cse2 .cse13 .cse4 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse30 (* (- 1) |ULTIMATE.start_main_~d~0#1|) .cse9) 4)) (= 5 |ULTIMATE.start_main_~q~0#1|)) (and .cse0 .cse26 .cse19 (= .cse29 |ULTIMATE.start_main_~d~0#1|) .cse10 .cse11 .cse27) (and .cse19 .cse4 .cse5 .cse15 .cse6 (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1| 1) .cse31) (<= .cse29 .cse14)) (and .cse1 .cse4 (<= .cse31 .cse9) (= .cse9 (+ |ULTIMATE.start_main_~r~0#1| .cse31)) .cse21 (= (div (+ .cse30 .cse9) 4) |ULTIMATE.start_main_~d~0#1|) .cse27) (and .cse25 .cse18 .cse13 .cse4 .cse20 .cse21 (= |ULTIMATE.start_main_~d~0#1| 4))))))) [2023-11-29 00:21:31,279 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= .cse4 5)) (.cse2 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~d~0#1| .cse4)) (.cse3 (<= 1 .cse4)) (.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (and .cse0 (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) .cse1) .cse2 .cse3 (<= .cse1 5) (= (* |ULTIMATE.start_main_~p~0#1| .cse4) |ULTIMATE.start_main_~d~0#1|)) (and .cse0 .cse2 .cse5 .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| .cse1)) (and .cse0 .cse2 .cse5 .cse3 (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse1))))) [2023-11-29 00:21:31,279 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 00:21:31,279 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse6)) (.cse7 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse1 (<= .cse4 5)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| .cse4)) (.cse5 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse8 (* 2 .cse6))) (or (let ((.cse3 (* 8 .cse6))) (and (= |ULTIMATE.start_main_~p~0#1| 8) .cse0 .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| .cse3) (+ |ULTIMATE.start_main_~d~0#1| .cse4)) (= |ULTIMATE.start_main_~d~0#1| .cse3) (<= .cse5 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse7 (= 2 |ULTIMATE.start_main_~p~0#1|) (= .cse8 |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse9) (and (<= .cse6 5) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse6) .cse0 .cse1 .cse2 .cse9) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse0 .cse7 .cse1 .cse2 .cse9 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ .cse5 .cse4) (+ .cse8 |ULTIMATE.start_main_~r~0#1|)))))) [2023-11-29 00:21:31,279 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2023-11-29 00:21:31,279 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-11-29 00:21:31,280 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse7 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse29 (* 2 .cse7))) (let ((.cse24 (+ |ULTIMATE.start_main_~r~0#1| 1)) (.cse17 (+ .cse29 |ULTIMATE.start_main_~r~0#1|)) (.cse14 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse12 (* 2 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= 1 .cse7)) (.cse16 (+ |ULTIMATE.start_main_~d~0#1| .cse9)) (.cse8 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse2 (= |ULTIMATE.start_main_~d~0#1| .cse7)) (.cse0 (<= .cse7 5)) (.cse26 (<= |ULTIMATE.start_main_~d~0#1| .cse12)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| .cse9)) (.cse19 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse5 (= 2 |ULTIMATE.start_main_~q~0#1|)) (.cse15 (= .cse14 .cse9)) (.cse6 (= .cse9 .cse17)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse31 (* 4 .cse7)) (.cse30 (* (- 1) |ULTIMATE.start_main_~r~0#1|)) (.cse27 (<= .cse24 |ULTIMATE.start_main_~d~0#1|)) (.cse25 (= |ULTIMATE.start_main_~p~0#1| 4)) (.cse18 (= .cse9 (+ |ULTIMATE.start_main_~r~0#1| 4))) (.cse13 (<= 0 |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse9 5)) (.cse20 (= .cse7 1)) (.cse21 (= |ULTIMATE.start_main_~q~0#1| 4))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and (or (= (+ |ULTIMATE.start_main_~r~0#1| .cse7) (+ .cse8 |ULTIMATE.start_main_~d~0#1| .cse9)) (< |ULTIMATE.start_main_~r~0#1| (+ .cse8 |ULTIMATE.start_main_~d~0#1|))) .cse0 .cse1 .cse2 .cse3 .cse4 .cse10 .cse11) (and (<= (+ (* 2 |ULTIMATE.start_main_~d~0#1|) .cse12 1) .cse9) .cse1 .cse13 (= 3 |ULTIMATE.start_main_~q~0#1|) .cse4 (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) (= (+ |ULTIMATE.start_main_~r~0#1| (* 3 .cse7)) .cse9)) (and .cse0 .cse1 .cse3 (= |ULTIMATE.start_main_~q~0#1| 1) (<= 1 .cse14) .cse15 (= .cse16 .cse17)) (and .cse18 .cse19 .cse13 .cse20 .cse21 (= 2 |ULTIMATE.start_main_~d~0#1|) (exists ((|ULTIMATE.start_main_~q~0#1| Int) (v_y_64 Int)) (let ((.cse23 (* v_y_64 4))) (let ((.cse22 (+ .cse23 |ULTIMATE.start_main_~r~0#1|))) (and (<= .cse22 5) (= .cse23 (* v_y_64 |ULTIMATE.start_main_~q~0#1|)) (<= (* v_y_64 2) |ULTIMATE.start_main_~d~0#1|) (<= .cse24 .cse23) (<= 0 .cse22) (<= v_y_64 4294967295)))))) (and .cse25 .cse26 .cse4 .cse10 .cse11 .cse27 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ .cse8 .cse9) .cse17)) (let ((.cse28 (* 8 .cse7))) (and (= |ULTIMATE.start_main_~p~0#1| 8) .cse4 .cse10 (= (+ |ULTIMATE.start_main_~r~0#1| .cse28) .cse16) (= |ULTIMATE.start_main_~d~0#1| .cse28) .cse27 (<= .cse8 |ULTIMATE.start_main_~r~0#1|))) (and .cse1 (<= .cse24 .cse29) .cse2 .cse13 .cse4 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse30 (* (- 1) |ULTIMATE.start_main_~d~0#1|) .cse9) 4)) (= 5 |ULTIMATE.start_main_~q~0#1|)) (and .cse0 .cse26 .cse19 (= .cse29 |ULTIMATE.start_main_~d~0#1|) .cse10 .cse11 .cse27) (and .cse19 .cse4 .cse5 .cse15 .cse6 (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1| 1) .cse31) (<= .cse29 .cse14)) (and .cse1 .cse4 (<= .cse31 .cse9) (= .cse9 (+ |ULTIMATE.start_main_~r~0#1| .cse31)) .cse21 (= (div (+ .cse30 .cse9) 4) |ULTIMATE.start_main_~d~0#1|) .cse27) (and .cse25 .cse18 .cse13 .cse4 .cse20 .cse21 (= |ULTIMATE.start_main_~d~0#1| 4))))))) [2023-11-29 00:21:31,281 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse7 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse27 (* 2 .cse7))) (let ((.cse26 (+ |ULTIMATE.start_main_~r~0#1| 1)) (.cse21 (+ .cse27 |ULTIMATE.start_main_~r~0#1|)) (.cse18 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse12 (* 2 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= 1 .cse7)) (.cse20 (+ |ULTIMATE.start_main_~d~0#1| .cse9)) (.cse8 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse2 (= |ULTIMATE.start_main_~d~0#1| .cse7)) (.cse0 (<= .cse7 5)) (.cse23 (<= |ULTIMATE.start_main_~d~0#1| .cse12)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| .cse9)) (.cse15 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse5 (= 2 |ULTIMATE.start_main_~q~0#1|)) (.cse19 (= .cse18 .cse9)) (.cse6 (= .cse9 .cse21)) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse29 (* 4 .cse7)) (.cse28 (* (- 1) |ULTIMATE.start_main_~r~0#1|)) (.cse24 (<= .cse26 |ULTIMATE.start_main_~d~0#1|)) (.cse22 (= |ULTIMATE.start_main_~p~0#1| 4)) (.cse14 (= .cse9 (+ |ULTIMATE.start_main_~r~0#1| 4))) (.cse13 (<= 0 |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse9 5)) (.cse16 (= .cse7 1)) (.cse17 (= |ULTIMATE.start_main_~q~0#1| 4))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and (or (= (+ |ULTIMATE.start_main_~r~0#1| .cse7) (+ .cse8 |ULTIMATE.start_main_~d~0#1| .cse9)) (< |ULTIMATE.start_main_~r~0#1| (+ .cse8 |ULTIMATE.start_main_~d~0#1|))) .cse0 .cse1 .cse2 .cse3 .cse4 .cse10 .cse11) (and (<= (+ (* 2 |ULTIMATE.start_main_~d~0#1|) .cse12 1) .cse9) .cse1 .cse13 (= 3 |ULTIMATE.start_main_~q~0#1|) .cse4 (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) (= (+ |ULTIMATE.start_main_~r~0#1| (* 3 .cse7)) .cse9)) (and .cse14 .cse15 .cse13 .cse4 .cse16 .cse17 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 .cse1 .cse3 (= |ULTIMATE.start_main_~q~0#1| 1) (<= 1 .cse18) .cse19 (= .cse20 .cse21)) (and .cse22 .cse23 .cse4 .cse10 .cse11 .cse24 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ .cse8 .cse9) .cse21)) (let ((.cse25 (* 8 .cse7))) (and (= |ULTIMATE.start_main_~p~0#1| 8) .cse4 .cse10 (= (+ |ULTIMATE.start_main_~r~0#1| .cse25) .cse20) (= |ULTIMATE.start_main_~d~0#1| .cse25) .cse24 (<= .cse8 |ULTIMATE.start_main_~r~0#1|))) (and .cse1 (<= .cse26 .cse27) .cse2 .cse13 .cse4 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse28 (* (- 1) |ULTIMATE.start_main_~d~0#1|) .cse9) 4)) (= 5 |ULTIMATE.start_main_~q~0#1|)) (and .cse0 .cse23 .cse15 (= .cse27 |ULTIMATE.start_main_~d~0#1|) .cse10 .cse11 .cse24) (and .cse15 .cse4 .cse5 .cse19 .cse6 (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1| 1) .cse29) (<= .cse27 .cse18)) (and .cse1 .cse4 (<= .cse29 .cse9) (= .cse9 (+ |ULTIMATE.start_main_~r~0#1| .cse29)) .cse17 (= (div (+ .cse28 .cse9) 4) |ULTIMATE.start_main_~d~0#1|) .cse24) (and .cse22 .cse14 .cse13 .cse4 .cse16 .cse17 (= |ULTIMATE.start_main_~d~0#1| 4))))))) [2023-11-29 00:21:31,281 INFO L899 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2023-11-29 00:21:31,281 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-29 00:21:31,282 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2023-11-29 00:21:31,282 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-11-29 00:21:31,282 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-11-29 00:21:31,282 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-11-29 00:21:31,282 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-11-29 00:21:31,282 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-11-29 00:21:31,282 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-11-29 00:21:31,282 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-11-29 00:21:31,282 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-11-29 00:21:31,285 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:31,287 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:21:31,304 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~q~0#1 : int, v_y_64 : int :: ((((v_y_64 * 4 + ~r~0 <= 5 && v_y_64 * 4 == v_y_64 * ULTIMATE.start_main_~q~0#1) && v_y_64 * 2 <= ~d~0) && ~r~0 + 1 <= v_y_64 * 4) && 0 <= v_y_64 * 4 + ~r~0) && v_y_64 <= 4294967295) could not be translated [2023-11-29 00:21:31,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:21:31 BoogieIcfgContainer [2023-11-29 00:21:31,312 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:21:31,313 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:21:31,313 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:21:31,313 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:21:31,314 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:12:33" (3/4) ... [2023-11-29 00:21:31,316 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:21:31,320 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-29 00:21:31,320 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 00:21:31,325 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-29 00:21:31,325 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 00:21:31,326 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 00:21:31,326 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 00:21:31,407 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:21:31,408 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:21:31,408 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:21:31,408 INFO L158 Benchmark]: Toolchain (without parser) took 539003.08ms. Allocated memory was 138.4MB in the beginning and 276.8MB in the end (delta: 138.4MB). Free memory was 92.5MB in the beginning and 107.7MB in the end (delta: -15.2MB). Peak memory consumption was 124.7MB. Max. memory is 16.1GB. [2023-11-29 00:21:31,408 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 138.4MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:21:31,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.74ms. Allocated memory is still 138.4MB. Free memory was 92.2MB in the beginning and 81.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:21:31,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.88ms. Allocated memory is still 138.4MB. Free memory was 81.4MB in the beginning and 79.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:21:31,409 INFO L158 Benchmark]: Boogie Preprocessor took 44.05ms. Allocated memory is still 138.4MB. Free memory was 79.7MB in the beginning and 77.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:21:31,410 INFO L158 Benchmark]: RCFGBuilder took 407.82ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 77.7MB in the beginning and 157.5MB in the end (delta: -79.8MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2023-11-29 00:21:31,410 INFO L158 Benchmark]: TraceAbstraction took 538142.41ms. Allocated memory was 190.8MB in the beginning and 276.8MB in the end (delta: 86.0MB). Free memory was 156.8MB in the beginning and 112.9MB in the end (delta: 43.9MB). Peak memory consumption was 170.4MB. Max. memory is 16.1GB. [2023-11-29 00:21:31,411 INFO L158 Benchmark]: Witness Printer took 94.73ms. Allocated memory is still 276.8MB. Free memory was 112.9MB in the beginning and 107.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:21:31,413 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 138.4MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.74ms. Allocated memory is still 138.4MB. Free memory was 92.2MB in the beginning and 81.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.88ms. Allocated memory is still 138.4MB. Free memory was 81.4MB in the beginning and 79.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.05ms. Allocated memory is still 138.4MB. Free memory was 79.7MB in the beginning and 77.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 407.82ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 77.7MB in the beginning and 157.5MB in the end (delta: -79.8MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 538142.41ms. Allocated memory was 190.8MB in the beginning and 276.8MB in the end (delta: 86.0MB). Free memory was 156.8MB in the beginning and 112.9MB in the end (delta: 43.9MB). Peak memory consumption was 170.4MB. Max. memory is 16.1GB. * Witness Printer took 94.73ms. Allocated memory is still 276.8MB. Free memory was 112.9MB in the beginning and 107.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists ULTIMATE.start_main_~q~0#1 : int, v_y_64 : int :: ((((v_y_64 * 4 + ~r~0 <= 5 && v_y_64 * 4 == v_y_64 * ULTIMATE.start_main_~q~0#1) && v_y_64 * 2 <= ~d~0) && ~r~0 + 1 <= v_y_64 * 4) && 0 <= v_y_64 * 4 + ~r~0) && v_y_64 <= 4294967295) could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 538.0s, OverallIterations: 17, TraceHistogramMax: 21, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 196.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 63.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 751 SdHoareTripleChecker+Valid, 42.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 699 mSDsluCounter, 4258 SdHoareTripleChecker+Invalid, 41.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3679 mSDsCounter, 722 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5072 IncrementalHoareTripleChecker+Invalid, 5795 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 722 mSolverCounterUnsat, 579 mSDtfsCounter, 5072 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2262 GetRequests, 1904 SyntacticMatches, 2 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2069 ImplicationChecksByTransitivity, 244.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=14, InterpolantAutomatonStates: 251, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 17 MinimizatonAttempts, 136 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 160 PreInvPairs, 234 NumberOfFragments, 2307 HoareAnnotationTreeSize, 160 FomulaSimplifications, 1504876 FormulaSimplificationTreeSizeReduction, 48.2s HoareSimplificationTime, 14 FomulaSimplificationsInter, 42310 FormulaSimplificationTreeSizeReductionInter, 15.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 271.9s InterpolantComputationTime, 1394 NumberOfCodeBlocks, 1332 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2050 ConstructedInterpolants, 6 QuantifiedInterpolants, 37628 SizeOfPredicates, 66 NumberOfNonLiveVariables, 2773 ConjunctsInSsa, 500 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 7217/7957 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((((((((((B % 4294967296) <= 5) && (p == 1)) && (d == (B % 4294967296))) && (1 <= (B % 4294967296))) && ((A % 4294967296) <= 5)) && (2 == q)) && ((A % 4294967296) == ((2 * (B % 4294967296)) + r))) || ((((((((((r + (B % 4294967296)) == (((d / 2) + d) + (A % 4294967296))) || (r < ((d / 2) + d))) && ((B % 4294967296) <= 5)) && (p == 1)) && (d == (B % 4294967296))) && (1 <= (B % 4294967296))) && ((A % 4294967296) <= 5)) && (q == 0)) && (r == (A % 4294967296)))) || ((((((((((2 * d) + (2 * r)) + 1) <= (A % 4294967296)) && (p == 1)) && (0 <= r)) && (3 == q)) && ((A % 4294967296) <= 5)) && (r < d)) && ((r + (3 * (B % 4294967296))) == (A % 4294967296)))) || ((((((((B % 4294967296) <= 5) && (p == 1)) && (1 <= (B % 4294967296))) && (q == 1)) && (1 <= (d + r))) && ((d + r) == (A % 4294967296))) && ((d + (A % 4294967296)) == ((2 * (B % 4294967296)) + r)))) || (((((((A % 4294967296) == (r + 4)) && (2 == p)) && (0 <= r)) && ((B % 4294967296) == 1)) && (q == 4)) && (2 == d))) || ((((((((p == 4) && (d <= (2 * r))) && ((A % 4294967296) <= 5)) && (q == 0)) && (r == (A % 4294967296))) && ((r + 1) <= d)) && ((d % 2) == 0)) && (((d / 2) + (A % 4294967296)) == ((2 * (B % 4294967296)) + r)))) || (((((((p == 8) && ((A % 4294967296) <= 5)) && (q == 0)) && ((r + (8 * (B % 4294967296))) == (d + (A % 4294967296)))) && (d == (8 * (B % 4294967296)))) && ((r + 1) <= d)) && ((d / 2) <= r))) || (((((((p == 1) && ((r + 1) <= (2 * (B % 4294967296)))) && (d == (B % 4294967296))) && (0 <= r)) && ((A % 4294967296) <= 5)) && (d == ((((-1 * r) + (-1 * d)) + (A % 4294967296)) / 4))) && (5 == q))) || ((((((((B % 4294967296) <= 5) && (d <= (2 * r))) && (2 == p)) && ((2 * (B % 4294967296)) == d)) && (q == 0)) && (r == (A % 4294967296))) && ((r + 1) <= d))) || (((((((2 == p) && ((A % 4294967296) <= 5)) && (2 == q)) && ((d + r) == (A % 4294967296))) && ((A % 4294967296) == ((2 * (B % 4294967296)) + r))) && (((d + r) + 1) <= (4 * (B % 4294967296)))) && ((2 * (B % 4294967296)) <= (d + r)))) || (((((((p == 1) && ((A % 4294967296) <= 5)) && ((4 * (B % 4294967296)) <= (A % 4294967296))) && ((A % 4294967296) == (r + (4 * (B % 4294967296))))) && (q == 4)) && ((((-1 * r) + (A % 4294967296)) / 4) == d)) && ((r + 1) <= d))) || (((((((p == 4) && ((A % 4294967296) == (r + 4))) && (0 <= r)) && ((A % 4294967296) <= 5)) && ((B % 4294967296) == 1)) && (q == 4)) && (d == 4))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((((p == 8) && (1 <= (B % 4294967296))) && ((A % 4294967296) <= 5)) && (q == 0)) && ((r + (8 * (B % 4294967296))) == (d + (A % 4294967296)))) && (d == (8 * (B % 4294967296)))) && ((d / 2) <= r)) || (((((((1 <= (B % 4294967296)) && (d <= (2 * r))) && (2 == p)) && ((2 * (B % 4294967296)) == d)) && ((A % 4294967296) <= 5)) && (q == 0)) && (r == (A % 4294967296)))) || ((((((((B % 4294967296) <= 5) && (p == 1)) && (d == (B % 4294967296))) && (1 <= (B % 4294967296))) && ((A % 4294967296) <= 5)) && (q == 0)) && (r == (A % 4294967296)))) || ((((((((p == 4) && (1 <= (B % 4294967296))) && (d <= (2 * r))) && ((A % 4294967296) <= 5)) && (q == 0)) && (r == (A % 4294967296))) && ((d % 2) == 0)) && (((d / 2) + (A % 4294967296)) == ((2 * (B % 4294967296)) + r)))) RESULT: Ultimate proved your program to be correct! [2023-11-29 00:21:31,624 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-11-29 00:21:31,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ce31c-87f2-4cee-84e9-854e87b702a4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE