./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/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_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:59:54,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:59:54,878 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:59:54,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:59:54,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:59:54,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:59:54,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:59:54,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:59:54,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:59:54,914 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:59:54,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:59:54,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:59:54,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:59:54,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:59:54,917 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:59:54,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:59:54,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:59:54,919 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:59:54,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:59:54,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:59:54,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:59:54,921 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:59:54,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:59:54,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:59:54,923 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:59:54,924 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:59:54,924 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:59:54,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:59:54,925 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:59:54,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:59:54,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:59:54,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:59:54,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:59:54,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:54,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:59:54,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:59:54,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:59:54,930 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:59:54,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:59:54,931 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:59:54,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:59:54,932 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:59:54,932 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:59:54,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:59:54,933 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_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 [2023-11-26 11:59:55,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:59:55,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:59:55,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:59:55,203 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:59:55,204 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:59:55,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2023-11-26 11:59:58,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:59:58,637 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:59:58,639 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2023-11-26 11:59:58,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/data/32d7b946b/43f2f03632e54b55b9d4bb471b413ac8/FLAG9932a881a [2023-11-26 11:59:58,667 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/data/32d7b946b/43f2f03632e54b55b9d4bb471b413ac8 [2023-11-26 11:59:58,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:59:58,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:59:58,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:58,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:59:58,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:59:58,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:58" (1/1) ... [2023-11-26 11:59:58,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16be8a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:58, skipping insertion in model container [2023-11-26 11:59:58,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:58" (1/1) ... [2023-11-26 11:59:58,720 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:59:58,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:58,970 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:59:58,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:59,015 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:59:59,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59 WrapperNode [2023-11-26 11:59:59,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:59,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:59,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:59:59,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:59:59,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,068 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-11-26 11:59:59,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:59,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:59:59,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:59:59,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:59:59,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,096 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:59:59,096 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,097 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:59:59,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:59:59,109 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:59:59,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:59:59,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (1/1) ... [2023-11-26 11:59:59,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:59,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:59,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:59,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:59:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:59:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:59:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:59:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:59:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:59:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:59:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:59:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:59:59,265 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:59:59,268 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:59:59,475 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:59:59,499 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:59:59,499 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:59:59,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:59 BoogieIcfgContainer [2023-11-26 11:59:59,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:59:59,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:59:59,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:59:59,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:59:59,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:59:58" (1/3) ... [2023-11-26 11:59:59,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e7a06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:59, skipping insertion in model container [2023-11-26 11:59:59,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:59" (2/3) ... [2023-11-26 11:59:59,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e7a06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:59, skipping insertion in model container [2023-11-26 11:59:59,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:59" (3/3) ... [2023-11-26 11:59:59,516 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2023-11-26 11:59:59,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:59:59,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-26 11:59:59,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:59:59,590 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;@540262d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:59:59,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-26 11:59:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 45 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 11:59:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-26 11:59:59,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:59,602 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:59,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 11:59:59,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,608 INFO L85 PathProgramCache]: Analyzing trace with hash -783542553, now seen corresponding path program 1 times [2023-11-26 11:59:59,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:59,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026479414] [2023-11-26 11:59:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:59,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026479414] [2023-11-26 11:59:59,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:59:59,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77985233] [2023-11-26 11:59:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:59,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:59,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:59:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:59:59,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 11:59:59,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:59:59,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77985233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:59,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:59,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:59:59,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399964407] [2023-11-26 11:59:59,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:59,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:59:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:00:00,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:00:00,012 INFO L87 Difference]: Start difference. First operand has 53 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 45 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:00:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:00,064 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2023-11-26 12:00:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:00:00,067 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-26 12:00:00,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:00,076 INFO L225 Difference]: With dead ends: 104 [2023-11-26 12:00:00,076 INFO L226 Difference]: Without dead ends: 50 [2023-11-26 12:00:00,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 12:00:00,085 INFO L413 NwaCegarLoop]: 55 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, 55 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 [2023-11-26 12:00:00,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:00,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-26 12:00:00,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-26 12:00:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 43 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:00:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2023-11-26 12:00:00,139 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 20 [2023-11-26 12:00:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:00,140 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2023-11-26 12:00:00,141 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:00:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2023-11-26 12:00:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-26 12:00:00,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:00,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:00,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 12:00:00,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 12:00:00,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:00,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:00,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1613567575, now seen corresponding path program 1 times [2023-11-26 12:00:00,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:00,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625822444] [2023-11-26 12:00:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:00,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:00,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:00,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804321368] [2023-11-26 12:00:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:00,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:00,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:00:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:00:00,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 12:00:00,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:01,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625822444] [2023-11-26 12:00:01,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:01,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804321368] [2023-11-26 12:00:01,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804321368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:01,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:01,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 12:00:01,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299199979] [2023-11-26 12:00:01,322 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:01,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:00:01,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:00:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:00:01,324 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:00:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:01,539 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2023-11-26 12:00:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:01,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-26 12:00:01,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:01,541 INFO L225 Difference]: With dead ends: 84 [2023-11-26 12:00:01,542 INFO L226 Difference]: Without dead ends: 75 [2023-11-26 12:00:01,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:00:01,544 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 87 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:01,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 71 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:00:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-26 12:00:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2023-11-26 12:00:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 56 states have internal predecessors, (66), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 12:00:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2023-11-26 12:00:01,557 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 20 [2023-11-26 12:00:01,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:01,558 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2023-11-26 12:00:01,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 12:00:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2023-11-26 12:00:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-26 12:00:01,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:01,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:01,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:01,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:01,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:01,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1519012777, now seen corresponding path program 1 times [2023-11-26 12:00:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:01,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175857493] [2023-11-26 12:00:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:01,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:01,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777545087] [2023-11-26 12:00:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:01,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:01,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:01,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:01,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:00:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 12:00:01,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:01,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:01,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:01,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175857493] [2023-11-26 12:00:01,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:01,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777545087] [2023-11-26 12:00:01,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777545087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:01,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:01,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:00:01,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176130950] [2023-11-26 12:00:01,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:01,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:00:01,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:01,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:00:01,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:00:01,995 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:00:02,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:02,195 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2023-11-26 12:00:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:00:02,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2023-11-26 12:00:02,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:02,201 INFO L225 Difference]: With dead ends: 72 [2023-11-26 12:00:02,201 INFO L226 Difference]: Without dead ends: 65 [2023-11-26 12:00:02,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:00:02,205 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 124 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:02,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 89 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:00:02,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-26 12:00:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2023-11-26 12:00:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 53 states have internal predecessors, (60), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 12:00:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-11-26 12:00:02,234 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 21 [2023-11-26 12:00:02,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:02,234 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-11-26 12:00:02,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:00:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-11-26 12:00:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 12:00:02,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:02,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:02,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 12:00:02,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:02,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:02,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash -155244117, now seen corresponding path program 1 times [2023-11-26 12:00:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:02,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780598728] [2023-11-26 12:00:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:02,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:02,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:02,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588569405] [2023-11-26 12:00:02,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:02,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:02,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:02,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:02,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:00:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:02,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:02,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:02,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:02,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780598728] [2023-11-26 12:00:02,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:02,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588569405] [2023-11-26 12:00:02,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588569405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:02,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:02,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:02,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354887401] [2023-11-26 12:00:02,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:02,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:02,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:02,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:02,545 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 12:00:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:02,633 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2023-11-26 12:00:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:02,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-26 12:00:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:02,635 INFO L225 Difference]: With dead ends: 87 [2023-11-26 12:00:02,635 INFO L226 Difference]: Without dead ends: 86 [2023-11-26 12:00:02,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:02,636 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:02,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 88 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-26 12:00:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2023-11-26 12:00:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 66 states have internal predecessors, (80), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:00:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2023-11-26 12:00:02,647 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 22 [2023-11-26 12:00:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:02,648 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2023-11-26 12:00:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 12:00:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2023-11-26 12:00:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 12:00:02,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:02,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:02,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:02,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:02,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:02,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash -517600277, now seen corresponding path program 1 times [2023-11-26 12:00:02,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:02,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508770882] [2023-11-26 12:00:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:02,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:02,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:02,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681366326] [2023-11-26 12:00:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:02,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:02,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:02,883 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:02,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:00:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:02,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:02,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:02,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:02,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508770882] [2023-11-26 12:00:02,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:02,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681366326] [2023-11-26 12:00:02,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681366326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:02,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:02,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:02,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402176325] [2023-11-26 12:00:02,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:02,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:02,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:02,980 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 12:00:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:03,051 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2023-11-26 12:00:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-11-26 12:00:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:03,053 INFO L225 Difference]: With dead ends: 86 [2023-11-26 12:00:03,053 INFO L226 Difference]: Without dead ends: 85 [2023-11-26 12:00:03,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:03,055 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:03,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 91 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-26 12:00:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2023-11-26 12:00:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 66 states have internal predecessors, (78), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:00:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2023-11-26 12:00:03,065 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 23 [2023-11-26 12:00:03,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:03,065 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2023-11-26 12:00:03,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 12:00:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2023-11-26 12:00:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-26 12:00:03,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:03,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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 12:00:03,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:03,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:03,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:03,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1420767521, now seen corresponding path program 1 times [2023-11-26 12:00:03,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:03,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749207681] [2023-11-26 12:00:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:03,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:03,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:03,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224942160] [2023-11-26 12:00:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:03,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:03,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:03,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:00:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:03,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:03,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:03,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:03,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:03,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749207681] [2023-11-26 12:00:03,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:03,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224942160] [2023-11-26 12:00:03,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224942160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:03,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:03,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:03,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745131691] [2023-11-26 12:00:03,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:03,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:03,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:03,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:03,453 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:00:03,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:03,530 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2023-11-26 12:00:03,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:03,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-11-26 12:00:03,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:03,534 INFO L225 Difference]: With dead ends: 77 [2023-11-26 12:00:03,534 INFO L226 Difference]: Without dead ends: 76 [2023-11-26 12:00:03,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 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 12:00:03,537 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:03,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 71 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-26 12:00:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2023-11-26 12:00:03,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.4) internal successors, (77), 66 states have internal predecessors, (77), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:00:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2023-11-26 12:00:03,574 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 33 [2023-11-26 12:00:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:03,574 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2023-11-26 12:00:03,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:00:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2023-11-26 12:00:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 12:00:03,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:03,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 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 12:00:03,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:03,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:03,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:03,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1094120262, now seen corresponding path program 1 times [2023-11-26 12:00:03,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561814576] [2023-11-26 12:00:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:03,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:03,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244287359] [2023-11-26 12:00:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:03,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:03,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:03,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:03,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:00:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:03,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:03,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:03,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:03,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:03,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561814576] [2023-11-26 12:00:03,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244287359] [2023-11-26 12:00:03,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244287359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:03,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:03,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568012051] [2023-11-26 12:00:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:03,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:03,948 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:00:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:04,010 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2023-11-26 12:00:04,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:04,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-11-26 12:00:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:04,012 INFO L225 Difference]: With dead ends: 76 [2023-11-26 12:00:04,016 INFO L226 Difference]: Without dead ends: 75 [2023-11-26 12:00:04,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 12:00:04,018 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 47 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:04,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 72 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:04,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-26 12:00:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-26 12:00:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 66 states have internal predecessors, (76), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:00:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2023-11-26 12:00:04,035 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 34 [2023-11-26 12:00:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:04,035 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2023-11-26 12:00:04,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:00:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2023-11-26 12:00:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 12:00:04,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:04,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 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 12:00:04,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-26 12:00:04,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:04,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:04,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:04,243 INFO L85 PathProgramCache]: Analyzing trace with hash -807839566, now seen corresponding path program 1 times [2023-11-26 12:00:04,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:04,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841820919] [2023-11-26 12:00:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:04,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:04,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:04,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449822585] [2023-11-26 12:00:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:04,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:04,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:04,265 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:04,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:00:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:04,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:04,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:04,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841820919] [2023-11-26 12:00:04,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449822585] [2023-11-26 12:00:04,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449822585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:04,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:04,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:04,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437112141] [2023-11-26 12:00:04,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:04,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:04,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:04,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:04,357 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:00:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:04,401 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2023-11-26 12:00:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:04,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2023-11-26 12:00:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:04,403 INFO L225 Difference]: With dead ends: 75 [2023-11-26 12:00:04,403 INFO L226 Difference]: Without dead ends: 73 [2023-11-26 12:00:04,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 12:00:04,404 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:04,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 49 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:04,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-26 12:00:04,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2023-11-26 12:00:04,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 63 states have internal predecessors, (72), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:00:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2023-11-26 12:00:04,426 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 36 [2023-11-26 12:00:04,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:04,427 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2023-11-26 12:00:04,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:00:04,427 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2023-11-26 12:00:04,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 12:00:04,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:04,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 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 12:00:04,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:04,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 12:00:04,638 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:04,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:04,638 INFO L85 PathProgramCache]: Analyzing trace with hash 429988456, now seen corresponding path program 1 times [2023-11-26 12:00:04,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:04,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833749368] [2023-11-26 12:00:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:04,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:04,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:04,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642694593] [2023-11-26 12:00:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:04,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:04,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:04,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:04,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:00:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:04,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:04,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:04,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:04,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833749368] [2023-11-26 12:00:04,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:04,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642694593] [2023-11-26 12:00:04,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642694593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:04,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:04,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:04,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074349291] [2023-11-26 12:00:04,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:04,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:04,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:04,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:04,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:04,768 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:00:04,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:04,827 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2023-11-26 12:00:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:04,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2023-11-26 12:00:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:04,830 INFO L225 Difference]: With dead ends: 76 [2023-11-26 12:00:04,830 INFO L226 Difference]: Without dead ends: 75 [2023-11-26 12:00:04,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 12:00:04,833 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 49 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:04,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 67 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-26 12:00:04,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2023-11-26 12:00:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 65 states have internal predecessors, (74), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:00:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2023-11-26 12:00:04,843 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 37 [2023-11-26 12:00:04,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:04,844 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2023-11-26 12:00:04,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:00:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2023-11-26 12:00:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 12:00:04,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:04,848 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 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 12:00:04,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-26 12:00:05,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 12:00:05,054 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:05,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash 444740330, now seen corresponding path program 1 times [2023-11-26 12:00:05,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:05,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486272076] [2023-11-26 12:00:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:05,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:05,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:05,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971439200] [2023-11-26 12:00:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:05,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:05,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:05,067 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:05,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:00:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:05,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:05,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:05,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:05,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486272076] [2023-11-26 12:00:05,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971439200] [2023-11-26 12:00:05,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971439200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:05,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:05,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:05,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643047263] [2023-11-26 12:00:05,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:05,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:05,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:05,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:05,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:05,187 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:00:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:05,240 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2023-11-26 12:00:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-26 12:00:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:05,242 INFO L225 Difference]: With dead ends: 76 [2023-11-26 12:00:05,243 INFO L226 Difference]: Without dead ends: 75 [2023-11-26 12:00:05,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 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 12:00:05,244 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 46 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:05,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-26 12:00:05,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-26 12:00:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 66 states have internal predecessors, (75), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:00:05,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2023-11-26 12:00:05,260 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 38 [2023-11-26 12:00:05,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:05,261 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2023-11-26 12:00:05,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:00:05,261 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2023-11-26 12:00:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 12:00:05,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:05,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:05,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:05,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 12:00:05,470 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:05,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:05,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1055259124, now seen corresponding path program 1 times [2023-11-26 12:00:05,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:05,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888970214] [2023-11-26 12:00:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:05,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:05,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:05,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362940104] [2023-11-26 12:00:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:05,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:05,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:05,484 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:05,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:00:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:05,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:00:05,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 12:00:05,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:09,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:09,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888970214] [2023-11-26 12:00:09,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:09,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362940104] [2023-11-26 12:00:09,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362940104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:09,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:09,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 12:00:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145024906] [2023-11-26 12:00:09,676 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:09,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:00:09,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:00:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=98, Unknown=1, NotChecked=0, Total=132 [2023-11-26 12:00:09,678 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:00:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:09,989 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2023-11-26 12:00:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:00:09,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2023-11-26 12:00:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:09,991 INFO L225 Difference]: With dead ends: 87 [2023-11-26 12:00:09,991 INFO L226 Difference]: Without dead ends: 83 [2023-11-26 12:00:09,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=57, Invalid=152, Unknown=1, NotChecked=0, Total=210 [2023-11-26 12:00:09,992 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 107 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:09,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 75 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:00:09,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-26 12:00:09,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2023-11-26 12:00:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 68 states have internal predecessors, (76), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:00:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-11-26 12:00:09,998 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 38 [2023-11-26 12:00:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:09,999 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-11-26 12:00:09,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:00:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-11-26 12:00:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 12:00:10,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:10,001 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 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 12:00:10,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:10,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 12:00:10,207 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:10,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash 902048426, now seen corresponding path program 1 times [2023-11-26 12:00:10,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:10,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646388801] [2023-11-26 12:00:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:10,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:10,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:10,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642933592] [2023-11-26 12:00:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:10,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:10,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:10,221 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:10,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 12:00:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:10,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:10,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:10,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:10,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:10,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646388801] [2023-11-26 12:00:10,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:10,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642933592] [2023-11-26 12:00:10,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642933592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:10,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:10,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:10,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435153473] [2023-11-26 12:00:10,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:10,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:10,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:10,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:10,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:10,335 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:00:10,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:10,574 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2023-11-26 12:00:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:10,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2023-11-26 12:00:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:10,576 INFO L225 Difference]: With dead ends: 85 [2023-11-26 12:00:10,576 INFO L226 Difference]: Without dead ends: 83 [2023-11-26 12:00:10,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:10,577 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:10,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 95 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:00:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-26 12:00:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2023-11-26 12:00:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 63 states have internal predecessors, (69), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:00:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2023-11-26 12:00:10,585 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 39 [2023-11-26 12:00:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:10,587 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2023-11-26 12:00:10,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:00:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2023-11-26 12:00:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 12:00:10,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:10,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 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 12:00:10,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:10,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:10,797 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:10,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1646705474, now seen corresponding path program 1 times [2023-11-26 12:00:10,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:10,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189511920] [2023-11-26 12:00:10,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:10,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:10,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:10,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302983187] [2023-11-26 12:00:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:10,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:10,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:10,817 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:10,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 12:00:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:10,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 12:00:10,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:00:11,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:12,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189511920] [2023-11-26 12:00:12,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302983187] [2023-11-26 12:00:12,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302983187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:12,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:12,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-26 12:00:12,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651375707] [2023-11-26 12:00:12,854 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:12,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:12,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:12,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:12,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:00:12,856 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:00:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:13,366 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2023-11-26 12:00:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:00:13,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2023-11-26 12:00:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:13,367 INFO L225 Difference]: With dead ends: 94 [2023-11-26 12:00:13,367 INFO L226 Difference]: Without dead ends: 92 [2023-11-26 12:00:13,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-11-26 12:00:13,369 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 82 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:13,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 110 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:00:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-26 12:00:13,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2023-11-26 12:00:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 76 states have internal predecessors, (83), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 12:00:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2023-11-26 12:00:13,376 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 39 [2023-11-26 12:00:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:13,376 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2023-11-26 12:00:13,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:00:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2023-11-26 12:00:13,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 12:00:13,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:13,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:13,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:13,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 12:00:13,583 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:13,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:13,584 INFO L85 PathProgramCache]: Analyzing trace with hash -685627986, now seen corresponding path program 1 times [2023-11-26 12:00:13,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:13,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432004764] [2023-11-26 12:00:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:13,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:13,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:13,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536364471] [2023-11-26 12:00:13,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:13,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:13,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:13,605 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:13,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 12:00:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:13,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:00:13,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 12:00:13,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:16,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:16,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432004764] [2023-11-26 12:00:16,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:16,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536364471] [2023-11-26 12:00:16,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536364471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:16,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:16,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-26 12:00:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808838668] [2023-11-26 12:00:16,431 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:16,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:00:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:00:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:00:16,433 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:00:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:17,111 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2023-11-26 12:00:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:00:17,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2023-11-26 12:00:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:17,113 INFO L225 Difference]: With dead ends: 103 [2023-11-26 12:00:17,113 INFO L226 Difference]: Without dead ends: 101 [2023-11-26 12:00:17,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 12:00:17,115 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 70 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:17,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 100 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:00:17,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-26 12:00:17,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2023-11-26 12:00:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.173913043478261) internal successors, (81), 74 states have internal predecessors, (81), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 12:00:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2023-11-26 12:00:17,123 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 42 [2023-11-26 12:00:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:17,124 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2023-11-26 12:00:17,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:00:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2023-11-26 12:00:17,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 12:00:17,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:17,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 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 12:00:17,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:17,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 12:00:17,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:17,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:17,336 INFO L85 PathProgramCache]: Analyzing trace with hash 220368964, now seen corresponding path program 1 times [2023-11-26 12:00:17,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:17,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506580388] [2023-11-26 12:00:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:17,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:17,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:17,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847244925] [2023-11-26 12:00:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:17,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:17,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:17,351 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:17,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 12:00:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:17,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 12:00:17,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 12:00:17,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:23,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:23,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506580388] [2023-11-26 12:00:23,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:23,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847244925] [2023-11-26 12:00:23,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847244925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:23,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:23,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-26 12:00:23,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111680708] [2023-11-26 12:00:23,135 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:23,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:00:23,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:23,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:00:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:00:23,136 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:00:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:23,706 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2023-11-26 12:00:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:00:23,707 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2023-11-26 12:00:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:23,708 INFO L225 Difference]: With dead ends: 108 [2023-11-26 12:00:23,708 INFO L226 Difference]: Without dead ends: 106 [2023-11-26 12:00:23,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2023-11-26 12:00:23,709 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 110 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:23,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 128 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:00:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-26 12:00:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2023-11-26 12:00:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 86 states have (on average 1.197674418604651) internal successors, (103), 91 states have internal predecessors, (103), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:00:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2023-11-26 12:00:23,721 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 43 [2023-11-26 12:00:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:23,721 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2023-11-26 12:00:23,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:00:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2023-11-26 12:00:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-26 12:00:23,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:23,723 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 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 12:00:23,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:23,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 12:00:23,929 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:23,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:23,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1758496656, now seen corresponding path program 1 times [2023-11-26 12:00:23,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:23,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903310800] [2023-11-26 12:00:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:23,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:23,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737607842] [2023-11-26 12:00:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:23,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:23,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:23,957 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:23,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 12:00:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:24,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:00:24,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 12:00:24,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 12:00:24,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:24,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903310800] [2023-11-26 12:00:24,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:24,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737607842] [2023-11-26 12:00:24,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737607842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:24,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:24,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-26 12:00:24,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949610698] [2023-11-26 12:00:24,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:24,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:00:24,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:24,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:00:24,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:00:24,270 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-26 12:00:24,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:24,417 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2023-11-26 12:00:24,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:24,417 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 44 [2023-11-26 12:00:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:24,419 INFO L225 Difference]: With dead ends: 107 [2023-11-26 12:00:24,419 INFO L226 Difference]: Without dead ends: 105 [2023-11-26 12:00:24,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:00:24,420 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:24,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 83 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:24,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-26 12:00:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2023-11-26 12:00:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 89 states have internal predecessors, (99), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:00:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2023-11-26 12:00:24,430 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 44 [2023-11-26 12:00:24,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:24,431 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2023-11-26 12:00:24,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-26 12:00:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2023-11-26 12:00:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-26 12:00:24,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:24,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 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 12:00:24,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:24,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 12:00:24,638 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:24,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1321178566, now seen corresponding path program 1 times [2023-11-26 12:00:24,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:24,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754080220] [2023-11-26 12:00:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:24,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:24,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:24,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534686027] [2023-11-26 12:00:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:24,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:24,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:24,649 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:24,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 12:00:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:24,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-26 12:00:24,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 12:00:25,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:34,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:34,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754080220] [2023-11-26 12:00:34,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534686027] [2023-11-26 12:00:34,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534686027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:34,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:34,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-26 12:00:34,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545547562] [2023-11-26 12:00:34,309 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:34,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 12:00:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:34,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 12:00:34,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-11-26 12:00:34,311 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:00:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:35,302 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2023-11-26 12:00:35,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:00:35,303 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 45 [2023-11-26 12:00:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:35,304 INFO L225 Difference]: With dead ends: 104 [2023-11-26 12:00:35,304 INFO L226 Difference]: Without dead ends: 102 [2023-11-26 12:00:35,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2023-11-26 12:00:35,305 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 97 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:35,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 142 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 12:00:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-26 12:00:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2023-11-26 12:00:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.127906976744186) internal successors, (97), 89 states have internal predecessors, (97), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:00:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2023-11-26 12:00:35,314 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 45 [2023-11-26 12:00:35,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:35,315 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2023-11-26 12:00:35,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 12:00:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2023-11-26 12:00:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 12:00:35,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:35,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2023-11-26 12:00:35,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:35,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 12:00:35,524 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:35,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1930025903, now seen corresponding path program 1 times [2023-11-26 12:00:35,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:35,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467425977] [2023-11-26 12:00:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:35,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:35,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:35,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018212625] [2023-11-26 12:00:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:35,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:35,537 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:35,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 12:00:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:35,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:35,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 12:00:35,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:35,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:35,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467425977] [2023-11-26 12:00:35,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:35,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018212625] [2023-11-26 12:00:35,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018212625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:35,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:35,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:35,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201357416] [2023-11-26 12:00:35,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:35,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:35,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:35,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:35,666 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 12:00:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:35,715 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2023-11-26 12:00:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2023-11-26 12:00:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:35,717 INFO L225 Difference]: With dead ends: 105 [2023-11-26 12:00:35,717 INFO L226 Difference]: Without dead ends: 104 [2023-11-26 12:00:35,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:35,720 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:35,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 98 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:00:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-26 12:00:35,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2023-11-26 12:00:35,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 88 states have (on average 1.125) internal successors, (99), 91 states have internal predecessors, (99), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:00:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2023-11-26 12:00:35,730 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 52 [2023-11-26 12:00:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:35,731 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2023-11-26 12:00:35,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 12:00:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2023-11-26 12:00:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 12:00:35,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:35,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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, 1, 1] [2023-11-26 12:00:35,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:35,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 12:00:35,943 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:35,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:35,944 INFO L85 PathProgramCache]: Analyzing trace with hash 568059509, now seen corresponding path program 1 times [2023-11-26 12:00:35,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:35,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508635025] [2023-11-26 12:00:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:35,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:35,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:35,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981649508] [2023-11-26 12:00:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:35,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:35,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:35,962 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:35,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 12:00:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:36,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:36,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 12:00:36,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 12:00:36,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:36,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508635025] [2023-11-26 12:00:36,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:36,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981649508] [2023-11-26 12:00:36,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981649508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:36,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:00:36,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-26 12:00:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816873270] [2023-11-26 12:00:36,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:36,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:00:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:00:36,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:00:36,147 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-26 12:00:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:36,405 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2023-11-26 12:00:36,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 56 [2023-11-26 12:00:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:36,408 INFO L225 Difference]: With dead ends: 183 [2023-11-26 12:00:36,408 INFO L226 Difference]: Without dead ends: 182 [2023-11-26 12:00:36,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:00:36,409 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 122 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:36,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 105 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:00:36,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-26 12:00:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2023-11-26 12:00:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 152 states have (on average 1.1513157894736843) internal successors, (175), 155 states have internal predecessors, (175), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 12:00:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 199 transitions. [2023-11-26 12:00:36,428 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 199 transitions. Word has length 56 [2023-11-26 12:00:36,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:36,429 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 199 transitions. [2023-11-26 12:00:36,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-26 12:00:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 199 transitions. [2023-11-26 12:00:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 12:00:36,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:36,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:36,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:36,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:36,640 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:36,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:36,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2118778221, now seen corresponding path program 2 times [2023-11-26 12:00:36,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:36,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445070127] [2023-11-26 12:00:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:36,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:36,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:36,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987525952] [2023-11-26 12:00:36,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:36,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:36,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:36,657 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:36,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 12:00:36,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:00:36,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:36,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 12:00:36,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 12:00:37,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445070127] [2023-11-26 12:00:38,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987525952] [2023-11-26 12:00:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987525952] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:38,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:38,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-26 12:00:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287697288] [2023-11-26 12:00:38,208 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:38,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 12:00:38,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:38,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 12:00:38,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:00:38,210 INFO L87 Difference]: Start difference. First operand 170 states and 199 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 12:00:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:38,822 INFO L93 Difference]: Finished difference Result 177 states and 205 transitions. [2023-11-26 12:00:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 12:00:38,823 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 57 [2023-11-26 12:00:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:38,824 INFO L225 Difference]: With dead ends: 177 [2023-11-26 12:00:38,824 INFO L226 Difference]: Without dead ends: 176 [2023-11-26 12:00:38,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2023-11-26 12:00:38,826 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 146 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:38,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 140 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:00:38,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-26 12:00:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 170. [2023-11-26 12:00:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 152 states have (on average 1.144736842105263) internal successors, (174), 155 states have internal predecessors, (174), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 12:00:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 198 transitions. [2023-11-26 12:00:38,842 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 198 transitions. Word has length 57 [2023-11-26 12:00:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:38,842 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 198 transitions. [2023-11-26 12:00:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 12:00:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 198 transitions. [2023-11-26 12:00:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 12:00:38,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:38,843 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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] [2023-11-26 12:00:38,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:39,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:39,048 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:39,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1567508327, now seen corresponding path program 1 times [2023-11-26 12:00:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:39,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467523956] [2023-11-26 12:00:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:39,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:39,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:39,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091575626] [2023-11-26 12:00:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:39,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:39,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:39,059 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:39,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 12:00:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:39,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-26 12:00:39,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 12:00:39,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:41,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:41,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467523956] [2023-11-26 12:00:41,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:00:41,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091575626] [2023-11-26 12:00:41,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091575626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:41,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:41,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-26 12:00:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785190003] [2023-11-26 12:00:41,166 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:41,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 12:00:41,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 12:00:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-26 12:00:41,168 INFO L87 Difference]: Start difference. First operand 170 states and 198 transitions. Second operand has 17 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 12:00:41,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:41,944 INFO L93 Difference]: Finished difference Result 199 states and 229 transitions. [2023-11-26 12:00:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 12:00:41,945 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 61 [2023-11-26 12:00:41,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:41,946 INFO L225 Difference]: With dead ends: 199 [2023-11-26 12:00:41,947 INFO L226 Difference]: Without dead ends: 198 [2023-11-26 12:00:41,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2023-11-26 12:00:41,948 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 81 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:41,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 156 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:00:41,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-26 12:00:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 177. [2023-11-26 12:00:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 159 states have (on average 1.1383647798742138) internal successors, (181), 162 states have internal predecessors, (181), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 12:00:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 205 transitions. [2023-11-26 12:00:41,964 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 205 transitions. Word has length 61 [2023-11-26 12:00:41,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:41,965 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 205 transitions. [2023-11-26 12:00:41,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 12:00:41,965 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 205 transitions. [2023-11-26 12:00:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 12:00:41,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:41,966 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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] [2023-11-26 12:00:41,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:42,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:42,172 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-26 12:00:42,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:42,173 INFO L85 PathProgramCache]: Analyzing trace with hash 370301849, now seen corresponding path program 2 times [2023-11-26 12:00:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:42,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217308530] [2023-11-26 12:00:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:42,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:42,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:00:42,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802056946] [2023-11-26 12:00:42,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:42,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:42,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:42,182 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:42,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c952b31a-bc9b-4e40-8f5a-a1a4defbb487/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 12:00:42,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:00:42,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:42,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-26 12:00:42,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 12:00:42,889 INFO L327 TraceCheckSpWp]: Computing backward predicates...