./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 99d74cc76e25b38aae472b34b3db02440f1cd9fa09a03e93def8777ec3812a28 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:50:08,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:50:08,444 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:50:08,450 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:50:08,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:50:08,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:50:08,478 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:50:08,479 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:50:08,480 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:50:08,480 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:50:08,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:50:08,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:50:08,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:50:08,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:50:08,484 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:50:08,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:50:08,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:50:08,486 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:50:08,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:50:08,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:50:08,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:50:08,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:50:08,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:50:08,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:50:08,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:50:08,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:50:08,491 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:50:08,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:50:08,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:50:08,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:50:08,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:50:08,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:50:08,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:50:08,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:50:08,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:50:08,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:50:08,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:50:08,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:50:08,497 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:50:08,497 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:50:08,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:50:08,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:50:08,498 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_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99d74cc76e25b38aae472b34b3db02440f1cd9fa09a03e93def8777ec3812a28 [2023-11-26 10:50:08,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:50:08,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:50:08,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:50:08,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:50:08,781 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:50:08,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-7.i [2023-11-26 10:50:11,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:50:12,283 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:50:12,285 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-7.i [2023-11-26 10:50:12,301 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/data/1fbb5dc5d/edafb74f77844fd780ffd431e53ba498/FLAG400dc9425 [2023-11-26 10:50:12,317 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/data/1fbb5dc5d/edafb74f77844fd780ffd431e53ba498 [2023-11-26 10:50:12,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:50:12,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:50:12,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:50:12,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:50:12,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:50:12,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:12,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de7eca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12, skipping insertion in model container [2023-11-26 10:50:12,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:12,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:50:12,602 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_359759d2-d486-4684-91e5-3871ed37f225/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-7.i[915,928] [2023-11-26 10:50:12,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:50:12,713 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:50:12,726 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_359759d2-d486-4684-91e5-3871ed37f225/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-7.i[915,928] [2023-11-26 10:50:12,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:50:12,812 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:50:12,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12 WrapperNode [2023-11-26 10:50:12,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:50:12,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:50:12,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:50:12,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:50:12,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:12,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:12,900 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 258 [2023-11-26 10:50:12,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:50:12,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:50:12,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:50:12,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:50:12,914 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:12,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:12,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:12,965 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:50:12,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:12,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:12,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:13,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:13,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:13,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:13,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:50:13,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:50:13,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:50:13,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:50:13,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (1/1) ... [2023-11-26 10:50:13,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:50:13,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:13,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:50:13,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:50:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:50:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:50:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:50:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:50:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:50:13,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:50:13,251 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:50:13,253 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:50:13,899 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:50:13,963 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:50:13,965 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:50:13,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:50:13 BoogieIcfgContainer [2023-11-26 10:50:13,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:50:13,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:50:13,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:50:13,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:50:13,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:50:12" (1/3) ... [2023-11-26 10:50:13,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f493ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:50:13, skipping insertion in model container [2023-11-26 10:50:13,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:50:12" (2/3) ... [2023-11-26 10:50:13,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f493ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:50:13, skipping insertion in model container [2023-11-26 10:50:13,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:50:13" (3/3) ... [2023-11-26 10:50:13,982 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-7.i [2023-11-26 10:50:14,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:50:14,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:50:14,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:50:14,098 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;@691485fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:50:14,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:50:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 63 states have (on average 1.507936507936508) internal successors, (95), 64 states have internal predecessors, (95), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-26 10:50:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-26 10:50:14,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:14,136 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:14,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:50:14,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash 559193954, now seen corresponding path program 1 times [2023-11-26 10:50:14,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:14,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104969938] [2023-11-26 10:50:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:14,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104969938] [2023-11-26 10:50:14,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:50:14,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892344144] [2023-11-26 10:50:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:14,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:14,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:14,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:14,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:50:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:14,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:50:14,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-11-26 10:50:14,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:50:14,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892344144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:14,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:14,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:50:14,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151882479] [2023-11-26 10:50:14,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:14,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:50:14,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:50:14,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:50:14,773 INFO L87 Difference]: Start difference. First operand has 101 states, 63 states have (on average 1.507936507936508) internal successors, (95), 64 states have internal predecessors, (95), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-26 10:50:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:14,820 INFO L93 Difference]: Finished difference Result 199 states and 363 transitions. [2023-11-26 10:50:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:50:14,823 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 219 [2023-11-26 10:50:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:14,832 INFO L225 Difference]: With dead ends: 199 [2023-11-26 10:50:14,832 INFO L226 Difference]: Without dead ends: 99 [2023-11-26 10:50:14,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:50:14,841 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:14,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:50:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-26 10:50:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-26 10:50:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-26 10:50:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 159 transitions. [2023-11-26 10:50:14,896 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 159 transitions. Word has length 219 [2023-11-26 10:50:14,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:14,897 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 159 transitions. [2023-11-26 10:50:14,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-26 10:50:14,897 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 159 transitions. [2023-11-26 10:50:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-26 10:50:14,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:14,904 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:14,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:50:15,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:50:15,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:50:15,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1768150928, now seen corresponding path program 1 times [2023-11-26 10:50:15,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:15,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007126107] [2023-11-26 10:50:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:15,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:15,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:50:15,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386878744] [2023-11-26 10:50:15,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:15,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:15,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:15,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:15,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:50:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:15,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:50:15,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-26 10:50:16,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:50:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007126107] [2023-11-26 10:50:16,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:50:16,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386878744] [2023-11-26 10:50:16,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386878744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:16,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:16,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:50:16,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790004583] [2023-11-26 10:50:16,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:16,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:50:16,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:16,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:50:16,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:50:16,020 INFO L87 Difference]: Start difference. First operand 99 states and 159 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-26 10:50:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:16,270 INFO L93 Difference]: Finished difference Result 296 states and 476 transitions. [2023-11-26 10:50:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:50:16,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 219 [2023-11-26 10:50:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:16,281 INFO L225 Difference]: With dead ends: 296 [2023-11-26 10:50:16,282 INFO L226 Difference]: Without dead ends: 198 [2023-11-26 10:50:16,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:50:16,290 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 100 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:16,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 458 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:50:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-26 10:50:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 160. [2023-11-26 10:50:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 87 states have (on average 1.3103448275862069) internal successors, (114), 87 states have internal predecessors, (114), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-26 10:50:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 254 transitions. [2023-11-26 10:50:16,352 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 254 transitions. Word has length 219 [2023-11-26 10:50:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:16,355 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 254 transitions. [2023-11-26 10:50:16,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-26 10:50:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 254 transitions. [2023-11-26 10:50:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-26 10:50:16,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:16,364 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:16,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:50:16,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:16,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:50:16,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2133584599, now seen corresponding path program 1 times [2023-11-26 10:50:16,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:16,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882783886] [2023-11-26 10:50:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:16,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:16,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:50:16,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099098413] [2023-11-26 10:50:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:16,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:16,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:16,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:16,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:50:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:16,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:50:16,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-26 10:50:16,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:50:16,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:16,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882783886] [2023-11-26 10:50:16,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:50:16,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099098413] [2023-11-26 10:50:16,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099098413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:16,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:16,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:50:16,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516868388] [2023-11-26 10:50:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:16,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:50:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:50:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:50:16,884 INFO L87 Difference]: Start difference. First operand 160 states and 254 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-26 10:50:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:16,968 INFO L93 Difference]: Finished difference Result 354 states and 566 transitions. [2023-11-26 10:50:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:50:16,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 220 [2023-11-26 10:50:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:16,976 INFO L225 Difference]: With dead ends: 354 [2023-11-26 10:50:16,976 INFO L226 Difference]: Without dead ends: 256 [2023-11-26 10:50:16,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:50:16,978 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 145 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:16,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 299 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:50:16,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-26 10:50:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 179. [2023-11-26 10:50:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 106 states have internal predecessors, (145), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-26 10:50:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 285 transitions. [2023-11-26 10:50:17,017 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 285 transitions. Word has length 220 [2023-11-26 10:50:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:17,018 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 285 transitions. [2023-11-26 10:50:17,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-26 10:50:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 285 transitions. [2023-11-26 10:50:17,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-26 10:50:17,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:17,023 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:17,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:50:17,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:17,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:50:17,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:17,230 INFO L85 PathProgramCache]: Analyzing trace with hash 36858839, now seen corresponding path program 1 times [2023-11-26 10:50:17,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:17,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788045313] [2023-11-26 10:50:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:17,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:17,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:50:17,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517317354] [2023-11-26 10:50:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:17,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:17,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:17,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:17,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:50:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:17,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:50:17,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-26 10:50:17,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:50:17,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:17,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788045313] [2023-11-26 10:50:17,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:50:17,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517317354] [2023-11-26 10:50:17,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517317354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:17,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:17,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:50:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148582836] [2023-11-26 10:50:17,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:17,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:50:17,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:17,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:50:17,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:50:17,548 INFO L87 Difference]: Start difference. First operand 179 states and 285 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-26 10:50:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:17,586 INFO L93 Difference]: Finished difference Result 296 states and 474 transitions. [2023-11-26 10:50:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:50:17,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 220 [2023-11-26 10:50:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:17,589 INFO L225 Difference]: With dead ends: 296 [2023-11-26 10:50:17,589 INFO L226 Difference]: Without dead ends: 179 [2023-11-26 10:50:17,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:50:17,591 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:17,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 302 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:50:17,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-26 10:50:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-11-26 10:50:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.349056603773585) internal successors, (143), 106 states have internal predecessors, (143), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-26 10:50:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 283 transitions. [2023-11-26 10:50:17,632 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 283 transitions. Word has length 220 [2023-11-26 10:50:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:17,634 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 283 transitions. [2023-11-26 10:50:17,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-26 10:50:17,634 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 283 transitions. [2023-11-26 10:50:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-26 10:50:17,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:17,645 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:17,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 10:50:17,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:17,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:50:17,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2106749367, now seen corresponding path program 1 times [2023-11-26 10:50:17,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:17,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419309654] [2023-11-26 10:50:17,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:17,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:17,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:50:17,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78669143] [2023-11-26 10:50:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:17,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:17,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:17,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:17,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:50:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:18,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-26 10:50:18,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1625 proven. 162 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2023-11-26 10:50:20,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:51:01,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:51:01,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419309654] [2023-11-26 10:51:01,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:51:01,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78669143] [2023-11-26 10:51:01,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78669143] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:51:01,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:51:01,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2023-11-26 10:51:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127637244] [2023-11-26 10:51:01,915 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:51:01,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 10:51:01,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:51:01,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 10:51:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1225, Unknown=2, NotChecked=0, Total=1560 [2023-11-26 10:51:01,920 INFO L87 Difference]: Start difference. First operand 179 states and 283 transitions. Second operand has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 27 states have internal predecessors, (82), 9 states have call successors, (35), 9 states have call predecessors, (35), 12 states have return successors, (35), 8 states have call predecessors, (35), 9 states have call successors, (35) [2023-11-26 10:51:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:51:10,069 INFO L93 Difference]: Finished difference Result 669 states and 955 transitions. [2023-11-26 10:51:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-11-26 10:51:10,077 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 27 states have internal predecessors, (82), 9 states have call successors, (35), 9 states have call predecessors, (35), 12 states have return successors, (35), 8 states have call predecessors, (35), 9 states have call successors, (35) Word has length 221 [2023-11-26 10:51:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:51:10,081 INFO L225 Difference]: With dead ends: 669 [2023-11-26 10:51:10,082 INFO L226 Difference]: Without dead ends: 552 [2023-11-26 10:51:10,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3536 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=2626, Invalid=8928, Unknown=2, NotChecked=0, Total=11556 [2023-11-26 10:51:10,091 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 963 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:51:10,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 688 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 10:51:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-11-26 10:51:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 299. [2023-11-26 10:51:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 212 states have (on average 1.330188679245283) internal successors, (282), 212 states have internal predecessors, (282), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-26 10:51:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 422 transitions. [2023-11-26 10:51:10,181 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 422 transitions. Word has length 221 [2023-11-26 10:51:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:51:10,182 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 422 transitions. [2023-11-26 10:51:10,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 27 states have internal predecessors, (82), 9 states have call successors, (35), 9 states have call predecessors, (35), 12 states have return successors, (35), 8 states have call predecessors, (35), 9 states have call successors, (35) [2023-11-26 10:51:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 422 transitions. [2023-11-26 10:51:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-26 10:51:10,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:51:10,186 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:51:10,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:51:10,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:51:10,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:51:10,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:51:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1177100679, now seen corresponding path program 1 times [2023-11-26 10:51:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:51:10,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807589870] [2023-11-26 10:51:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:51:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:51:10,439 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:51:10,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644998499] [2023-11-26 10:51:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:51:10,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:51:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:51:10,440 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:51:10,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_359759d2-d486-4684-91e5-3871ed37f225/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:51:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:51:10,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:51:10,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:51:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 522 proven. 90 refuted. 0 times theorem prover too weak. 1768 trivial. 0 not checked. [2023-11-26 10:51:11,151 INFO L327 TraceCheckSpWp]: Computing backward predicates...