./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/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_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/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_1d34adac-8d18-48a6-bb20-f8012d412732/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 aa72233183b4e91144bd6a6eb8a8b140b7f90e590c3e855f829f337fec510ab9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:26,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:26,227 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:48:26,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:26,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:26,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:26,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:26,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:26,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:48:26,295 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:48:26,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:26,297 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:26,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:26,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:26,300 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:26,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:26,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:26,302 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:48:26,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:26,303 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:48:26,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:26,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:26,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:26,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:26,307 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:48:26,307 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:48:26,307 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:48:26,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:26,308 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:26,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:26,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:26,311 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:48:26,311 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:26,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:26,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:26,312 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:26,312 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:26,312 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:26,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:26,313 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:26,313 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:26,314 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:26,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:26,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:26,315 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_1d34adac-8d18-48a6-bb20-f8012d412732/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa72233183b4e91144bd6a6eb8a8b140b7f90e590c3e855f829f337fec510ab9 [2023-11-26 10:48:26,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:26,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:26,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:26,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:26,647 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:26,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2023-11-26 10:48:29,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:30,071 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:30,072 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound100.c [2023-11-26 10:48:30,080 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/data/f40d51ce9/a1feca26184c4d278cd2710f47e7f8df/FLAGf4b3f1a65 [2023-11-26 10:48:30,095 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/data/f40d51ce9/a1feca26184c4d278cd2710f47e7f8df [2023-11-26 10:48:30,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:30,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:30,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:30,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:30,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:30,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c78895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30, skipping insertion in model container [2023-11-26 10:48:30,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:30,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:30,309 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:30,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:30,342 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:30,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30 WrapperNode [2023-11-26 10:48:30,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:30,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:30,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:30,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:30,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,381 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2023-11-26 10:48:30,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:30,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:30,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:30,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:30,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,408 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:48:30,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:30,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:30,421 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:30,421 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:30,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (1/1) ... [2023-11-26 10:48:30,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:30,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:30,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:48:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:48:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:30,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:30,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 10:48:30,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 10:48:30,563 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:30,566 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:48:30,777 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:48:30,806 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:48:30,806 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:48:30,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:30 BoogieIcfgContainer [2023-11-26 10:48:30,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:48:30,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:48:30,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:48:30,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:48:30,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:30" (1/3) ... [2023-11-26 10:48:30,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44196079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:30, skipping insertion in model container [2023-11-26 10:48:30,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:30" (2/3) ... [2023-11-26 10:48:30,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44196079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:30, skipping insertion in model container [2023-11-26 10:48:30,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:30" (3/3) ... [2023-11-26 10:48:30,850 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound100.c [2023-11-26 10:48:30,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:48:30,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 10:48:30,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:30,967 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;@329662cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:30,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 10:48:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 22 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-26 10:48:30,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 10:48:30,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:30,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:48:30,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:30,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash 118368741, now seen corresponding path program 1 times [2023-11-26 10:48:30,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:30,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056170312] [2023-11-26 10:48:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:30,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:31,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056170312] [2023-11-26 10:48:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056170312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:31,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:31,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:31,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585074769] [2023-11-26 10:48:31,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:31,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:48:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:31,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:48:31,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:48:31,238 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 22 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:31,288 INFO L93 Difference]: Finished difference Result 60 states and 94 transitions. [2023-11-26 10:48:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:48:31,290 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-26 10:48:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:31,298 INFO L225 Difference]: With dead ends: 60 [2023-11-26 10:48:31,298 INFO L226 Difference]: Without dead ends: 27 [2023-11-26 10:48:31,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:48:31,308 INFO L413 NwaCegarLoop]: 39 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, 39 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 10:48:31,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:48:31,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-26 10:48:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-26 10:48:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 10:48:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2023-11-26 10:48:31,357 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 5 [2023-11-26 10:48:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:31,358 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2023-11-26 10:48:31,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2023-11-26 10:48:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 10:48:31,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:31,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:48:31,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:48:31,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:31,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash 118428323, now seen corresponding path program 1 times [2023-11-26 10:48:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:31,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368506308] [2023-11-26 10:48:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:31,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:31,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368506308] [2023-11-26 10:48:31,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368506308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:31,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:31,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:31,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606722947] [2023-11-26 10:48:31,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:31,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:31,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:31,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:31,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:31,571 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:31,636 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2023-11-26 10:48:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:48:31,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-26 10:48:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:31,638 INFO L225 Difference]: With dead ends: 47 [2023-11-26 10:48:31,638 INFO L226 Difference]: Without dead ends: 31 [2023-11-26 10:48:31,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:31,640 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:31,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 81 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:48:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-26 10:48:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-26 10:48:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 24 states have internal predecessors, (28), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 10:48:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-26 10:48:31,654 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 5 [2023-11-26 10:48:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:31,655 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-26 10:48:31,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-26 10:48:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-26 10:48:31,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:31,658 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:31,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:48:31,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:31,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1994096058, now seen corresponding path program 1 times [2023-11-26 10:48:31,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:31,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453377200] [2023-11-26 10:48:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:31,698 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:31,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422298963] [2023-11-26 10:48:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:31,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:31,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:31,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:31,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:48:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:31,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:48:31,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:31,919 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 10:48:31,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:31,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:31,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453377200] [2023-11-26 10:48:31,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:31,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422298963] [2023-11-26 10:48:31,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422298963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:31,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:31,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:48:31,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743910454] [2023-11-26 10:48:31,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:31,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:31,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:31,929 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 10:48:32,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:32,028 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2023-11-26 10:48:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:48:32,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 25 [2023-11-26 10:48:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:32,031 INFO L225 Difference]: With dead ends: 31 [2023-11-26 10:48:32,031 INFO L226 Difference]: Without dead ends: 29 [2023-11-26 10:48:32,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:48:32,033 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:32,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 62 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:32,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-26 10:48:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-26 10:48:32,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 10:48:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2023-11-26 10:48:32,040 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 25 [2023-11-26 10:48:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:32,042 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2023-11-26 10:48:32,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 10:48:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2023-11-26 10:48:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 10:48:32,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:32,043 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] [2023-11-26 10:48:32,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:32,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:32,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:32,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1687435582, now seen corresponding path program 1 times [2023-11-26 10:48:32,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:32,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406661307] [2023-11-26 10:48:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:32,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:32,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:32,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797077462] [2023-11-26 10:48:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:32,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:32,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:32,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:32,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:48:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:32,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:48:32,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:32,407 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 10:48:32,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:32,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:32,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406661307] [2023-11-26 10:48:32,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:32,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797077462] [2023-11-26 10:48:32,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797077462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:32,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:32,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:48:32,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596053150] [2023-11-26 10:48:32,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:32,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:32,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:32,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:32,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:32,416 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 10:48:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:32,521 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2023-11-26 10:48:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:48:32,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 26 [2023-11-26 10:48:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:32,523 INFO L225 Difference]: With dead ends: 46 [2023-11-26 10:48:32,523 INFO L226 Difference]: Without dead ends: 45 [2023-11-26 10:48:32,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:48:32,525 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:32,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 106 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-26 10:48:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2023-11-26 10:48:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 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 10:48:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2023-11-26 10:48:32,538 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 26 [2023-11-26 10:48:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:32,539 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2023-11-26 10:48:32,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 10:48:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2023-11-26 10:48:32,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 10:48:32,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:32,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:32,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:32,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:32,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1687399832, now seen corresponding path program 1 times [2023-11-26 10:48:32,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:32,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374328189] [2023-11-26 10:48:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:32,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:32,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:32,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718240101] [2023-11-26 10:48:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:32,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:32,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:32,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:32,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:48:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:32,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:48:32,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:32,927 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 10:48:32,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:32,998 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 10:48:32,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:32,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374328189] [2023-11-26 10:48:32,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:32,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718240101] [2023-11-26 10:48:32,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718240101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:32,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:32,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-26 10:48:32,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178852205] [2023-11-26 10:48:32,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:33,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:48:33,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:33,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:48:33,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:48:33,001 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 10:48:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:33,200 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2023-11-26 10:48:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:48:33,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 26 [2023-11-26 10:48:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:33,205 INFO L225 Difference]: With dead ends: 89 [2023-11-26 10:48:33,205 INFO L226 Difference]: Without dead ends: 75 [2023-11-26 10:48:33,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:48:33,208 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 64 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:33,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 105 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-26 10:48:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2023-11-26 10:48:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-26 10:48:33,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2023-11-26 10:48:33,243 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 26 [2023-11-26 10:48:33,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:33,244 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2023-11-26 10:48:33,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 10:48:33,248 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2023-11-26 10:48:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 10:48:33,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:33,250 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-26 10:48:33,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:33,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:33,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:33,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash -339875692, now seen corresponding path program 1 times [2023-11-26 10:48:33,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:33,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842835517] [2023-11-26 10:48:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:33,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:33,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:33,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222942389] [2023-11-26 10:48:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:33,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:33,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:33,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:33,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:48:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:33,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:48:33,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 10:48:33,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 10:48:33,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842835517] [2023-11-26 10:48:33,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:33,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222942389] [2023-11-26 10:48:33,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222942389] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:33,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-26 10:48:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037180411] [2023-11-26 10:48:33,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:33,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:48:33,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:48:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:48:33,794 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 10:48:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:34,151 INFO L93 Difference]: Finished difference Result 107 states and 133 transitions. [2023-11-26 10:48:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 10:48:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2023-11-26 10:48:34,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:34,154 INFO L225 Difference]: With dead ends: 107 [2023-11-26 10:48:34,154 INFO L226 Difference]: Without dead ends: 106 [2023-11-26 10:48:34,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2023-11-26 10:48:34,156 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 59 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:34,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 192 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:48:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-26 10:48:34,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2023-11-26 10:48:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.162162162162162) internal successors, (86), 75 states have internal predecessors, (86), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2023-11-26 10:48:34,172 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 42 [2023-11-26 10:48:34,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:34,173 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2023-11-26 10:48:34,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 10:48:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2023-11-26 10:48:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 10:48:34,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:34,175 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:34,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:34,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 10:48:34,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:34,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash -597482282, now seen corresponding path program 1 times [2023-11-26 10:48:34,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:34,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362607776] [2023-11-26 10:48:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:34,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:34,403 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:34,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124034033] [2023-11-26 10:48:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:34,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:34,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:34,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:34,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:48:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:34,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:48:34,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:48:34,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 10:48:34,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:34,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362607776] [2023-11-26 10:48:34,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:34,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124034033] [2023-11-26 10:48:34,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124034033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:34,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:34,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-26 10:48:34,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151597054] [2023-11-26 10:48:34,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:34,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:48:34,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:48:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:48:34,757 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-26 10:48:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:35,042 INFO L93 Difference]: Finished difference Result 157 states and 192 transitions. [2023-11-26 10:48:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-26 10:48:35,043 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 50 [2023-11-26 10:48:35,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:35,047 INFO L225 Difference]: With dead ends: 157 [2023-11-26 10:48:35,048 INFO L226 Difference]: Without dead ends: 143 [2023-11-26 10:48:35,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2023-11-26 10:48:35,050 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 85 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:35,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 174 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-26 10:48:35,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2023-11-26 10:48:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 91 states have (on average 1.1428571428571428) internal successors, (104), 92 states have internal predecessors, (104), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-26 10:48:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 156 transitions. [2023-11-26 10:48:35,075 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 156 transitions. Word has length 50 [2023-11-26 10:48:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:35,076 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 156 transitions. [2023-11-26 10:48:35,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-26 10:48:35,076 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 156 transitions. [2023-11-26 10:48:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 10:48:35,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:35,079 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:35,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:35,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 10:48:35,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:35,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:35,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1181186760, now seen corresponding path program 1 times [2023-11-26 10:48:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:35,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792227187] [2023-11-26 10:48:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:35,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:35,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925209595] [2023-11-26 10:48:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:35,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:35,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:35,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:35,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:48:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:35,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:48:35,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:48:35,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-26 10:48:35,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:35,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792227187] [2023-11-26 10:48:35,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:35,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925209595] [2023-11-26 10:48:35,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925209595] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:35,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:35,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-11-26 10:48:35,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746030578] [2023-11-26 10:48:35,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:35,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 10:48:35,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:35,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 10:48:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-26 10:48:35,756 INFO L87 Difference]: Start difference. First operand 128 states and 156 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-26 10:48:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:36,267 INFO L93 Difference]: Finished difference Result 180 states and 219 transitions. [2023-11-26 10:48:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 10:48:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 66 [2023-11-26 10:48:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:36,271 INFO L225 Difference]: With dead ends: 180 [2023-11-26 10:48:36,271 INFO L226 Difference]: Without dead ends: 179 [2023-11-26 10:48:36,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2023-11-26 10:48:36,275 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 116 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:36,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 203 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:48:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-26 10:48:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 136. [2023-11-26 10:48:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 96 states have internal predecessors, (109), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 10:48:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 167 transitions. [2023-11-26 10:48:36,312 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 167 transitions. Word has length 66 [2023-11-26 10:48:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:36,314 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 167 transitions. [2023-11-26 10:48:36,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-26 10:48:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 167 transitions. [2023-11-26 10:48:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-26 10:48:36,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:36,323 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:36,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:36,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:36,529 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:36,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash -982876319, now seen corresponding path program 1 times [2023-11-26 10:48:36,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:36,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533510511] [2023-11-26 10:48:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:36,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:36,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629984698] [2023-11-26 10:48:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:36,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:36,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:36,567 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:36,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:48:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:36,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:48:36,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-26 10:48:36,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-26 10:48:37,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533510511] [2023-11-26 10:48:37,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629984698] [2023-11-26 10:48:37,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629984698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:37,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:37,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2023-11-26 10:48:37,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973915917] [2023-11-26 10:48:37,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:37,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 10:48:37,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 10:48:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2023-11-26 10:48:37,086 INFO L87 Difference]: Start difference. First operand 136 states and 167 transitions. Second operand has 22 states, 21 states have (on average 3.380952380952381) internal successors, (71), 22 states have internal predecessors, (71), 8 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-26 10:48:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:37,644 INFO L93 Difference]: Finished difference Result 221 states and 267 transitions. [2023-11-26 10:48:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-26 10:48:37,645 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.380952380952381) internal successors, (71), 22 states have internal predecessors, (71), 8 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 78 [2023-11-26 10:48:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:37,647 INFO L225 Difference]: With dead ends: 221 [2023-11-26 10:48:37,647 INFO L226 Difference]: Without dead ends: 220 [2023-11-26 10:48:37,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=464, Invalid=1428, Unknown=0, NotChecked=0, Total=1892 [2023-11-26 10:48:37,649 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 120 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:37,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 217 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:48:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-26 10:48:37,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 160. [2023-11-26 10:48:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 113 states have (on average 1.1415929203539823) internal successors, (129), 114 states have internal predecessors, (129), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-26 10:48:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 195 transitions. [2023-11-26 10:48:37,669 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 195 transitions. Word has length 78 [2023-11-26 10:48:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:37,670 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 195 transitions. [2023-11-26 10:48:37,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.380952380952381) internal successors, (71), 22 states have internal predecessors, (71), 8 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-26 10:48:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 195 transitions. [2023-11-26 10:48:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-26 10:48:37,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:37,672 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2023-11-26 10:48:37,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:37,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:37,878 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:37,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:37,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2071083694, now seen corresponding path program 2 times [2023-11-26 10:48:37,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:37,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964465476] [2023-11-26 10:48:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:37,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:37,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:37,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351483123] [2023-11-26 10:48:37,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:37,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:37,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:37,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:37,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:48:38,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:48:38,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:38,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:48:38,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 226 proven. 153 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-26 10:48:38,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2023-11-26 10:48:38,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:38,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964465476] [2023-11-26 10:48:38,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:38,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351483123] [2023-11-26 10:48:38,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351483123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:38,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:38,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-26 10:48:38,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21028685] [2023-11-26 10:48:38,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:38,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 10:48:38,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:38,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 10:48:38,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:48:38,380 INFO L87 Difference]: Start difference. First operand 160 states and 195 transitions. Second operand has 20 states, 19 states have (on average 3.736842105263158) internal successors, (71), 20 states have internal predecessors, (71), 9 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-26 10:48:38,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:38,772 INFO L93 Difference]: Finished difference Result 282 states and 341 transitions. [2023-11-26 10:48:38,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-26 10:48:38,773 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.736842105263158) internal successors, (71), 20 states have internal predecessors, (71), 9 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) Word has length 114 [2023-11-26 10:48:38,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:38,776 INFO L225 Difference]: With dead ends: 282 [2023-11-26 10:48:38,776 INFO L226 Difference]: Without dead ends: 281 [2023-11-26 10:48:38,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=390, Invalid=870, Unknown=0, NotChecked=0, Total=1260 [2023-11-26 10:48:38,779 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 177 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:38,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 126 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:48:38,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-26 10:48:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 180. [2023-11-26 10:48:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 130 states have (on average 1.1307692307692307) internal successors, (147), 131 states have internal predecessors, (147), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 10:48:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 215 transitions. [2023-11-26 10:48:38,800 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 215 transitions. Word has length 114 [2023-11-26 10:48:38,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:38,801 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 215 transitions. [2023-11-26 10:48:38,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.736842105263158) internal successors, (71), 20 states have internal predecessors, (71), 9 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-26 10:48:38,802 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 215 transitions. [2023-11-26 10:48:38,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-26 10:48:38,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:38,804 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2023-11-26 10:48:38,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:39,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:48:39,022 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:39,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1254225999, now seen corresponding path program 2 times [2023-11-26 10:48:39,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:39,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877840307] [2023-11-26 10:48:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:39,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:39,048 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:39,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014319724] [2023-11-26 10:48:39,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:39,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:39,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:39,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:39,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:48:39,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:48:39,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:39,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 10:48:39,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 678 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 10:48:39,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-26 10:48:39,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877840307] [2023-11-26 10:48:39,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014319724] [2023-11-26 10:48:39,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014319724] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:39,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:39,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2023-11-26 10:48:39,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328138769] [2023-11-26 10:48:39,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:39,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-26 10:48:39,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-26 10:48:39,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2023-11-26 10:48:39,840 INFO L87 Difference]: Start difference. First operand 180 states and 215 transitions. Second operand has 30 states, 29 states have (on average 3.206896551724138) internal successors, (93), 30 states have internal predecessors, (93), 12 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-11-26 10:48:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:40,755 INFO L93 Difference]: Finished difference Result 352 states and 427 transitions. [2023-11-26 10:48:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-26 10:48:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.206896551724138) internal successors, (93), 30 states have internal predecessors, (93), 12 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 126 [2023-11-26 10:48:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:40,759 INFO L225 Difference]: With dead ends: 352 [2023-11-26 10:48:40,759 INFO L226 Difference]: Without dead ends: 338 [2023-11-26 10:48:40,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1049, Invalid=2143, Unknown=0, NotChecked=0, Total=3192 [2023-11-26 10:48:40,762 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 269 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:40,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 312 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:48:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-26 10:48:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 275. [2023-11-26 10:48:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 193 states have (on average 1.160621761658031) internal successors, (224), 194 states have internal predecessors, (224), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-26 10:48:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 340 transitions. [2023-11-26 10:48:40,790 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 340 transitions. Word has length 126 [2023-11-26 10:48:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:40,791 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 340 transitions. [2023-11-26 10:48:40,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.206896551724138) internal successors, (93), 30 states have internal predecessors, (93), 12 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-11-26 10:48:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 340 transitions. [2023-11-26 10:48:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-26 10:48:40,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:40,794 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:40,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:40,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:41,000 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:41,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:41,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2047916611, now seen corresponding path program 2 times [2023-11-26 10:48:41,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:41,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743666098] [2023-11-26 10:48:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:41,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:41,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13038998] [2023-11-26 10:48:41,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:41,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:41,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:41,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:41,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 10:48:41,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:48:41,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:41,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 10:48:41,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 21 proven. 931 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:48:41,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 21 proven. 175 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-11-26 10:48:42,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:42,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743666098] [2023-11-26 10:48:42,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:42,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13038998] [2023-11-26 10:48:42,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13038998] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:42,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:42,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-11-26 10:48:42,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406122697] [2023-11-26 10:48:42,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:42,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-26 10:48:42,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-26 10:48:42,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=969, Unknown=0, NotChecked=0, Total=1260 [2023-11-26 10:48:42,043 INFO L87 Difference]: Start difference. First operand 275 states and 340 transitions. Second operand has 36 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 36 states have internal predecessors, (109), 14 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 14 states have call predecessors, (42), 14 states have call successors, (42) [2023-11-26 10:48:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:42,219 INFO L93 Difference]: Finished difference Result 291 states and 359 transitions. [2023-11-26 10:48:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:48:42,220 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 36 states have internal predecessors, (109), 14 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 14 states have call predecessors, (42), 14 states have call successors, (42) Word has length 150 [2023-11-26 10:48:42,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:42,222 INFO L225 Difference]: With dead ends: 291 [2023-11-26 10:48:42,222 INFO L226 Difference]: Without dead ends: 289 [2023-11-26 10:48:42,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=431, Invalid=1291, Unknown=0, NotChecked=0, Total=1722 [2023-11-26 10:48:42,224 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 70 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:42,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 177 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-26 10:48:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 191. [2023-11-26 10:48:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 138 states have internal predecessors, (155), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 10:48:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 229 transitions. [2023-11-26 10:48:42,249 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 229 transitions. Word has length 150 [2023-11-26 10:48:42,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:42,250 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 229 transitions. [2023-11-26 10:48:42,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 36 states have internal predecessors, (109), 14 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 14 states have call predecessors, (42), 14 states have call successors, (42) [2023-11-26 10:48:42,250 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 229 transitions. [2023-11-26 10:48:42,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-26 10:48:42,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:42,253 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:42,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:42,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:42,460 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:42,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:42,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2024269138, now seen corresponding path program 2 times [2023-11-26 10:48:42,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:42,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658424798] [2023-11-26 10:48:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:42,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:42,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:42,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028716681] [2023-11-26 10:48:42,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:42,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:42,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:42,490 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:42,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 10:48:42,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:48:42,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:42,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 10:48:42,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 0 proven. 888 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-26 10:48:43,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-26 10:48:43,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:43,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658424798] [2023-11-26 10:48:43,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:43,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028716681] [2023-11-26 10:48:43,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028716681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:43,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:43,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 41 [2023-11-26 10:48:43,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381613035] [2023-11-26 10:48:43,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:43,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-26 10:48:43,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:43,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-26 10:48:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2023-11-26 10:48:43,659 INFO L87 Difference]: Start difference. First operand 191 states and 229 transitions. Second operand has 42 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 42 states have internal predecessors, (148), 18 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 18 states have call predecessors, (38), 18 states have call successors, (38) [2023-11-26 10:48:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:45,075 INFO L93 Difference]: Finished difference Result 486 states and 581 transitions. [2023-11-26 10:48:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-26 10:48:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 42 states have internal predecessors, (148), 18 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 18 states have call predecessors, (38), 18 states have call successors, (38) Word has length 154 [2023-11-26 10:48:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:45,080 INFO L225 Difference]: With dead ends: 486 [2023-11-26 10:48:45,080 INFO L226 Difference]: Without dead ends: 485 [2023-11-26 10:48:45,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1491 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1916, Invalid=4726, Unknown=0, NotChecked=0, Total=6642 [2023-11-26 10:48:45,084 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 245 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:45,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 315 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:48:45,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-11-26 10:48:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 311. [2023-11-26 10:48:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 228 states have (on average 1.118421052631579) internal successors, (255), 228 states have internal predecessors, (255), 57 states have call successors, (57), 25 states have call predecessors, (57), 25 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-26 10:48:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 369 transitions. [2023-11-26 10:48:45,125 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 369 transitions. Word has length 154 [2023-11-26 10:48:45,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:45,126 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 369 transitions. [2023-11-26 10:48:45,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 42 states have internal predecessors, (148), 18 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 18 states have call predecessors, (38), 18 states have call successors, (38) [2023-11-26 10:48:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 369 transitions. [2023-11-26 10:48:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-26 10:48:45,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:45,131 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:48:45,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:45,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:45,339 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:45,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash 412547425, now seen corresponding path program 1 times [2023-11-26 10:48:45,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:45,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046958879] [2023-11-26 10:48:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:45,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:45,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585624369] [2023-11-26 10:48:45,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:45,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:45,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:45,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:45,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 10:48:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:45,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 10:48:45,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 336 proven. 952 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-26 10:48:45,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1214 trivial. 0 not checked. [2023-11-26 10:48:46,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:46,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046958879] [2023-11-26 10:48:46,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:46,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585624369] [2023-11-26 10:48:46,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585624369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:46,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:46,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2023-11-26 10:48:46,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749467397] [2023-11-26 10:48:46,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:46,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-26 10:48:46,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:46,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-26 10:48:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 10:48:46,446 INFO L87 Difference]: Start difference. First operand 311 states and 369 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 15 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 15 states have call predecessors, (46), 15 states have call successors, (46) [2023-11-26 10:48:47,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:47,550 INFO L93 Difference]: Finished difference Result 489 states and 587 transitions. [2023-11-26 10:48:47,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-26 10:48:47,551 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 15 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 15 states have call predecessors, (46), 15 states have call successors, (46) Word has length 182 [2023-11-26 10:48:47,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:47,554 INFO L225 Difference]: With dead ends: 489 [2023-11-26 10:48:47,554 INFO L226 Difference]: Without dead ends: 461 [2023-11-26 10:48:47,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1359, Invalid=2801, Unknown=0, NotChecked=0, Total=4160 [2023-11-26 10:48:47,557 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 343 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:47,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 292 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:48:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-11-26 10:48:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 419. [2023-11-26 10:48:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 300 states have (on average 1.12) internal successors, (336), 300 states have internal predecessors, (336), 84 states have call successors, (84), 34 states have call predecessors, (84), 34 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-26 10:48:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 504 transitions. [2023-11-26 10:48:47,613 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 504 transitions. Word has length 182 [2023-11-26 10:48:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:47,613 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 504 transitions. [2023-11-26 10:48:47,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 15 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 15 states have call predecessors, (46), 15 states have call successors, (46) [2023-11-26 10:48:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 504 transitions. [2023-11-26 10:48:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-26 10:48:47,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:47,618 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:47,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:47,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:47,824 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:48:47,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash 315876895, now seen corresponding path program 3 times [2023-11-26 10:48:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18258094] [2023-11-26 10:48:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:47,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:47,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:47,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59452664] [2023-11-26 10:48:47,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:48:47,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:47,850 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:47,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 10:48:47,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 10:48:47,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:47,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:48:47,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 1184 trivial. 0 not checked. [2023-11-26 10:48:48,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:48,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:48,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18258094] [2023-11-26 10:48:48,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:48,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59452664] [2023-11-26 10:48:48,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59452664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:48,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:48,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:48:48,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179348669] [2023-11-26 10:48:48,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:48,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:48,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:48,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:48,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:48,023 INFO L87 Difference]: Start difference. First operand 419 states and 504 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:48:48,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:48,104 INFO L93 Difference]: Finished difference Result 431 states and 516 transitions. [2023-11-26 10:48:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:48,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 190 [2023-11-26 10:48:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:48,106 INFO L225 Difference]: With dead ends: 431 [2023-11-26 10:48:48,106 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 10:48:48,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:48,110 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 91 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 10:48:48,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 91 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:48:48,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 10:48:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 10:48:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 10:48:48,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 190 [2023-11-26 10:48:48,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:48,112 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:48:48,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:48:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 10:48:48,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 10:48:48,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-26 10:48:48,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-26 10:48:48,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-26 10:48:48,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-26 10:48:48,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-26 10:48:48,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 10:48:48,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 10:49:12,305 WARN L293 SmtUtils]: Spent 23.65s on a formula simplification. DAG size of input: 202 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-11-26 10:49:13,360 INFO L899 garLoopResultBuilder]: For program point L35-2(line 35) no Hoare annotation was computed. [2023-11-26 10:49:13,360 INFO L899 garLoopResultBuilder]: For program point L35-3(lines 35 43) no Hoare annotation was computed. [2023-11-26 10:49:13,360 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 45) no Hoare annotation was computed. [2023-11-26 10:49:13,361 INFO L895 garLoopResultBuilder]: At program point L35-5(lines 35 43) the Hoare annotation is: (or (and (<= 1 ~counter~0) (<= ~counter~0 100)) (= ~counter~0 0)) [2023-11-26 10:49:13,361 INFO L899 garLoopResultBuilder]: For program point L60(line 60) no Hoare annotation was computed. [2023-11-26 10:49:13,361 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-11-26 10:49:13,361 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 ~counter~0) (<= ~counter~0 100)) [2023-11-26 10:49:13,361 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (and (<= 1 ~counter~0) (<= ~counter~0 100)) [2023-11-26 10:49:13,362 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 35) no Hoare annotation was computed. [2023-11-26 10:49:13,362 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 56) no Hoare annotation was computed. [2023-11-26 10:49:13,362 INFO L895 garLoopResultBuilder]: At program point L53-2(lines 45 57) the Hoare annotation is: (and (<= 1 ~counter~0) (<= ~counter~0 2147483645)) [2023-11-26 10:49:13,362 INFO L899 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2023-11-26 10:49:13,362 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-26 10:49:13,363 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2023-11-26 10:49:13,363 INFO L899 garLoopResultBuilder]: For program point L45-2(lines 45 57) no Hoare annotation was computed. [2023-11-26 10:49:13,363 INFO L902 garLoopResultBuilder]: At program point L45-4(lines 45 57) the Hoare annotation is: true [2023-11-26 10:49:13,363 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 ~counter~0) (<= ~counter~0 100)) [2023-11-26 10:49:13,364 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 35) no Hoare annotation was computed. [2023-11-26 10:49:13,364 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 10:49:13,364 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (<= 1 ~counter~0) (<= ~counter~0 100)) [2023-11-26 10:49:13,364 INFO L895 garLoopResultBuilder]: At program point L46-1(line 46) the Hoare annotation is: (and (<= 1 ~counter~0) (<= ~counter~0 100)) [2023-11-26 10:49:13,364 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 10:49:13,365 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 43) no Hoare annotation was computed. [2023-11-26 10:49:13,365 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 45) no Hoare annotation was computed. [2023-11-26 10:49:13,365 INFO L902 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: true [2023-11-26 10:49:13,365 INFO L899 garLoopResultBuilder]: For program point L47(lines 45 57) no Hoare annotation was computed. [2023-11-26 10:49:13,365 INFO L899 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2023-11-26 10:49:13,366 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-11-26 10:49:13,366 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-11-26 10:49:13,366 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-11-26 10:49:13,366 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-11-26 10:49:13,370 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:13,373 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:49:13,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:49:13 BoogieIcfgContainer [2023-11-26 10:49:13,388 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:49:13,389 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:49:13,389 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:49:13,389 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:49:13,390 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:30" (3/4) ... [2023-11-26 10:49:13,393 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:49:13,398 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-26 10:49:13,404 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-26 10:49:13,404 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-26 10:49:13,405 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 10:49:13,405 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 10:49:13,518 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:49:13,519 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:49:13,520 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:49:13,520 INFO L158 Benchmark]: Toolchain (without parser) took 43420.69ms. Allocated memory was 140.5MB in the beginning and 625.0MB in the end (delta: 484.4MB). Free memory was 77.9MB in the beginning and 483.1MB in the end (delta: -405.2MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2023-11-26 10:49:13,521 INFO L158 Benchmark]: CDTParser took 1.39ms. Allocated memory is still 102.8MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:49:13,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.84ms. Allocated memory is still 140.5MB. Free memory was 77.7MB in the beginning and 66.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:49:13,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.42ms. Allocated memory is still 140.5MB. Free memory was 66.9MB in the beginning and 65.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:49:13,522 INFO L158 Benchmark]: Boogie Preprocessor took 38.60ms. Allocated memory is still 140.5MB. Free memory was 65.3MB in the beginning and 63.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:49:13,523 INFO L158 Benchmark]: RCFGBuilder took 385.77ms. Allocated memory is still 140.5MB. Free memory was 63.3MB in the beginning and 50.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:49:13,524 INFO L158 Benchmark]: TraceAbstraction took 42555.75ms. Allocated memory was 140.5MB in the beginning and 625.0MB in the end (delta: 484.4MB). Free memory was 111.7MB in the beginning and 487.3MB in the end (delta: -375.7MB). Peak memory consumption was 374.9MB. Max. memory is 16.1GB. [2023-11-26 10:49:13,524 INFO L158 Benchmark]: Witness Printer took 130.84ms. Allocated memory is still 625.0MB. Free memory was 487.3MB in the beginning and 483.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:49:13,527 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39ms. Allocated memory is still 102.8MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.84ms. Allocated memory is still 140.5MB. Free memory was 77.7MB in the beginning and 66.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.42ms. Allocated memory is still 140.5MB. Free memory was 66.9MB in the beginning and 65.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.60ms. Allocated memory is still 140.5MB. Free memory was 65.3MB in the beginning and 63.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.77ms. Allocated memory is still 140.5MB. Free memory was 63.3MB in the beginning and 50.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 42555.75ms. Allocated memory was 140.5MB in the beginning and 625.0MB in the end (delta: 484.4MB). Free memory was 111.7MB in the beginning and 487.3MB in the end (delta: -375.7MB). Peak memory consumption was 374.9MB. Max. memory is 16.1GB. * Witness Printer took 130.84ms. Allocated memory is still 625.0MB. Free memory was 487.3MB in the beginning and 483.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 42.4s, OverallIterations: 15, TraceHistogramMax: 25, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 25.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1604 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1604 mSDsluCounter, 2492 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2116 mSDsCounter, 171 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1858 IncrementalHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 171 mSolverCounterUnsat, 376 mSDtfsCounter, 1858 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2400 GetRequests, 1966 SyntacticMatches, 0 SemanticMatches, 434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4356 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=419occurred in iteration=14, InterpolantAutomatonStates: 346, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 612 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 114 PreInvPairs, 239 NumberOfFragments, 56 HoareAnnotationTreeSize, 114 FomulaSimplifications, 1004280 FormulaSimplificationTreeSizeReduction, 24.3s HoareSimplificationTime, 10 FomulaSimplificationsInter, 4043 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 1239 NumberOfCodeBlocks, 1097 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 2202 ConstructedInterpolants, 0 QuantifiedInterpolants, 4946 SizeOfPredicates, 105 NumberOfNonLiveVariables, 2528 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 6825/11669 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((1 <= counter) && (counter <= 100)) || (counter == 0)) - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((1 <= counter) && (counter <= 2147483645)) RESULT: Ultimate proved your program to be correct! [2023-11-26 10:49:13,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d34adac-8d18-48a6-bb20-f8012d412732/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE