./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/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_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/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_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/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 6ed0b12ce7ca8412687eea32cd5c4beaf5275fff5c5bfef18c07965c0f054672 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:49:38,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:49:39,089 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:49:39,097 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:49:39,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:49:39,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:49:39,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:49:39,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:49:39,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:49:39,156 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:49:39,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:49:39,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:49:39,160 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:49:39,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:49:39,163 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:49:39,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:49:39,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:49:39,165 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:49:39,166 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:49:39,166 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:49:39,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:49:39,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:49:39,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:49:39,169 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:49:39,169 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:49:39,170 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:49:39,170 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:49:39,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:49:39,172 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:49:39,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:49:39,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:49:39,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:49:39,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:49:39,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:39,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:49:39,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:49:39,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:49:39,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:49:39,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:49:39,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:49:39,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:49:39,179 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:49:39,179 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:49:39,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:49:39,180 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_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ed0b12ce7ca8412687eea32cd5c4beaf5275fff5c5bfef18c07965c0f054672 [2023-11-26 10:49:39,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:49:39,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:49:39,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:49:39,538 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:49:39,538 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:49:39,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2023-11-26 10:49:42,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:49:43,086 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:49:43,086 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2023-11-26 10:49:43,096 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/data/0e63ffee1/20b5f995ec6e4845b38df375ac71d66c/FLAGf61101483 [2023-11-26 10:49:43,113 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/data/0e63ffee1/20b5f995ec6e4845b38df375ac71d66c [2023-11-26 10:49:43,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:49:43,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:49:43,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:43,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:49:43,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:49:43,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241b69a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43, skipping insertion in model container [2023-11-26 10:49:43,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,153 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:49:43,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:43,339 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:49:43,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:43,372 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:49:43,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43 WrapperNode [2023-11-26 10:49:43,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:43,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:43,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:49:43,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:49:43,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,422 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2023-11-26 10:49:43,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:43,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:49:43,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:49:43,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:49:43,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,450 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 10:49:43,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:49:43,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:49:43,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:49:43,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:49:43,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (1/1) ... [2023-11-26 10:49:43,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:43,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:43,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:49:43,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:49:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:49:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:49:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:49:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:49:43,644 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:49:43,646 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:49:43,808 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:49:43,836 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:49:43,836 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:49:43,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:43 BoogieIcfgContainer [2023-11-26 10:49:43,837 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:49:43,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:49:43,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:49:43,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:49:43,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:49:43" (1/3) ... [2023-11-26 10:49:43,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52346045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:43, skipping insertion in model container [2023-11-26 10:49:43,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:43" (2/3) ... [2023-11-26 10:49:43,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52346045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:43, skipping insertion in model container [2023-11-26 10:49:43,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:43" (3/3) ... [2023-11-26 10:49:43,850 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark22_conjunctive.i [2023-11-26 10:49:43,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:49:43,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 10:49:43,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:43,950 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;@3d7eecc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:43,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 10:49:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 states have internal predecessors, (23), 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 10:49:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 10:49:43,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:43,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:49:43,966 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 10:49:43,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash 72255252, now seen corresponding path program 1 times [2023-11-26 10:49:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:43,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040979877] [2023-11-26 10:49:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:44,360 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 10:49:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:44,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040979877] [2023-11-26 10:49:44,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040979877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:44,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:44,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:44,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923935066] [2023-11-26 10:49:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:44,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:44,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:44,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:44,442 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 states have internal predecessors, (23), 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) Second operand has 3 states, 2 states have (on average 2.5) 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 10:49:44,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:44,504 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2023-11-26 10:49:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:44,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 10:49:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:44,516 INFO L225 Difference]: With dead ends: 35 [2023-11-26 10:49:44,516 INFO L226 Difference]: Without dead ends: 16 [2023-11-26 10:49:44,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:44,528 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:44,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:49:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-26 10:49:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2023-11-26 10:49:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 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 10:49:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-26 10:49:44,566 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2023-11-26 10:49:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:44,567 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-26 10:49:44,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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 10:49:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-26 10:49:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:49:44,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:44,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:49:44,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:49:44,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:49:44,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2055054433, now seen corresponding path program 1 times [2023-11-26 10:49:44,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:44,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694209449] [2023-11-26 10:49:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:44,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:44,630 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 10:49:44,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:44,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694209449] [2023-11-26 10:49:44,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694209449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:44,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:44,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:44,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464584366] [2023-11-26 10:49:44,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:44,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:44,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:44,635 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 10:49:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:44,660 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-11-26 10:49:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:44,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-26 10:49:44,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:44,662 INFO L225 Difference]: With dead ends: 17 [2023-11-26 10:49:44,662 INFO L226 Difference]: Without dead ends: 16 [2023-11-26 10:49:44,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:44,665 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:44,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:49:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-26 10:49:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-26 10:49:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 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 10:49:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-26 10:49:44,672 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2023-11-26 10:49:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:44,672 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-26 10:49:44,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 10:49:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-26 10:49:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 10:49:44,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:44,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:44,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:49:44,674 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 10:49:44,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash 717822070, now seen corresponding path program 1 times [2023-11-26 10:49:44,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:44,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207043508] [2023-11-26 10:49:44,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:44,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:44,755 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 10:49:44,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:44,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207043508] [2023-11-26 10:49:44,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207043508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:44,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:44,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:44,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858055898] [2023-11-26 10:49:44,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:44,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:44,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:44,760 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 10:49:44,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:44,809 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-11-26 10:49:44,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:44,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2023-11-26 10:49:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:44,811 INFO L225 Difference]: With dead ends: 16 [2023-11-26 10:49:44,811 INFO L226 Difference]: Without dead ends: 15 [2023-11-26 10:49:44,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 10:49:44,814 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:44,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:49:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-26 10:49:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-26 10:49:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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 10:49:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-26 10:49:44,823 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2023-11-26 10:49:44,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:44,823 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-26 10:49:44,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 10:49:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-26 10:49:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 10:49:44,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:44,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:44,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:49:44,826 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 10:49:44,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 777647745, now seen corresponding path program 1 times [2023-11-26 10:49:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733640403] [2023-11-26 10:49:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:44,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:44,940 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 10:49:44,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:44,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733640403] [2023-11-26 10:49:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733640403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:44,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:44,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143825713] [2023-11-26 10:49:44,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:44,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:44,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:44,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:44,945 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 10:49:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:44,985 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2023-11-26 10:49:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:44,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2023-11-26 10:49:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:44,987 INFO L225 Difference]: With dead ends: 18 [2023-11-26 10:49:44,987 INFO L226 Difference]: Without dead ends: 17 [2023-11-26 10:49:44,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 10:49:44,990 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:44,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:49:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-26 10:49:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-26 10:49:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 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 10:49:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-26 10:49:44,997 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2023-11-26 10:49:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:44,998 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-26 10:49:44,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 10:49:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-26 10:49:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 10:49:44,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:44,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:44,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:49:45,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:49:45,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:45,001 INFO L85 PathProgramCache]: Analyzing trace with hash -149581461, now seen corresponding path program 1 times [2023-11-26 10:49:45,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:45,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417151949] [2023-11-26 10:49:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:45,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:45,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417151949] [2023-11-26 10:49:45,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417151949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230300078] [2023-11-26 10:49:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:45,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:45,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:45,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:45,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:49:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:45,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:49:45,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:45,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:49:45,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230300078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:45,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:49:45,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-26 10:49:45,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258111603] [2023-11-26 10:49:45,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:45,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:49:45,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:49:45,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:49:45,373 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 10:49:45,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:45,463 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-11-26 10:49:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:49:45,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2023-11-26 10:49:45,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:45,468 INFO L225 Difference]: With dead ends: 17 [2023-11-26 10:49:45,468 INFO L226 Difference]: Without dead ends: 16 [2023-11-26 10:49:45,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:49:45,474 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:45,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:49:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-26 10:49:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-26 10:49:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 10:49:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-26 10:49:45,488 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2023-11-26 10:49:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:45,489 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-26 10:49:45,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 10:49:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-26 10:49:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:49:45,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:45,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:45,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:45,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:45,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:49:45,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:45,706 INFO L85 PathProgramCache]: Analyzing trace with hash -342057944, now seen corresponding path program 1 times [2023-11-26 10:49:45,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:45,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619334703] [2023-11-26 10:49:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:45,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:45,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:45,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619334703] [2023-11-26 10:49:45,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619334703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:45,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116215354] [2023-11-26 10:49:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:45,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:45,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:45,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:45,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:49:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:45,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:49:45,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:46,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:46,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116215354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:46,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:46,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 10:49:46,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803652957] [2023-11-26 10:49:46,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:46,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:49:46,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:46,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:49:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:49:46,206 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 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 10:49:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:46,320 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2023-11-26 10:49:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:49:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 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 12 [2023-11-26 10:49:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:46,323 INFO L225 Difference]: With dead ends: 28 [2023-11-26 10:49:46,323 INFO L226 Difference]: Without dead ends: 27 [2023-11-26 10:49:46,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:49:46,325 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:46,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 20 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:49:46,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-26 10:49:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2023-11-26 10:49:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 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 10:49:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-11-26 10:49:46,333 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2023-11-26 10:49:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:46,333 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-11-26 10:49:46,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 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 10:49:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-11-26 10:49:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 10:49:46,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:46,335 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 10:49:46,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:46,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:46,543 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 10:49:46,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1994799306, now seen corresponding path program 1 times [2023-11-26 10:49:46,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:46,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711107005] [2023-11-26 10:49:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:46,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:46,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711107005] [2023-11-26 10:49:46,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711107005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:46,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221034394] [2023-11-26 10:49:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:46,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:46,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:46,636 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:46,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:49:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:46,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:49:46,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:46,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:46,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221034394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:46,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:46,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-26 10:49:46,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380714897] [2023-11-26 10:49:46,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:46,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:49:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:46,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:49:46,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:49:46,801 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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 10:49:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:46,893 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-11-26 10:49:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:49:46,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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 14 [2023-11-26 10:49:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:46,895 INFO L225 Difference]: With dead ends: 36 [2023-11-26 10:49:46,895 INFO L226 Difference]: Without dead ends: 35 [2023-11-26 10:49:46,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:49:46,897 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:46,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 20 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:49:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-26 10:49:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-11-26 10:49:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 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 10:49:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2023-11-26 10:49:46,911 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 14 [2023-11-26 10:49:46,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:46,911 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2023-11-26 10:49:46,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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 10:49:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2023-11-26 10:49:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 10:49:46,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:46,912 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1] [2023-11-26 10:49:46,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:47,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:47,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:49:47,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash 689261818, now seen corresponding path program 2 times [2023-11-26 10:49:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850310518] [2023-11-26 10:49:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:47,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:47,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850310518] [2023-11-26 10:49:47,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850310518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:47,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629819704] [2023-11-26 10:49:47,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:49:47,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:47,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:47,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:47,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:49:47,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:49:47,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:49:47,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:49:47,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:47,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:48,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629819704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:48,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:48,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-26 10:49:48,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115141272] [2023-11-26 10:49:48,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:48,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 10:49:48,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 10:49:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-11-26 10:49:48,067 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 23 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 23 states have internal predecessors, (70), 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 10:49:48,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:48,438 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2023-11-26 10:49:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:49:48,439 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 23 states have internal predecessors, (70), 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 24 [2023-11-26 10:49:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:48,443 INFO L225 Difference]: With dead ends: 53 [2023-11-26 10:49:48,444 INFO L226 Difference]: Without dead ends: 52 [2023-11-26 10:49:48,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2023-11-26 10:49:48,447 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:48,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 44 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:49:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-26 10:49:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2023-11-26 10:49:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 49 states have internal predecessors, (52), 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 10:49:48,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-11-26 10:49:48,478 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 24 [2023-11-26 10:49:48,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:48,480 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-11-26 10:49:48,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 23 states have internal predecessors, (70), 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 10:49:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2023-11-26 10:49:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 10:49:48,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:48,482 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1] [2023-11-26 10:49:48,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:48,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:48,683 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 10:49:48,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1991532763, now seen corresponding path program 2 times [2023-11-26 10:49:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:48,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443527024] [2023-11-26 10:49:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:48,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:48,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443527024] [2023-11-26 10:49:48,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443527024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:48,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59404235] [2023-11-26 10:49:48,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:49:48,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:48,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:48,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:48,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:49:49,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:49:49,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:49:49,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 10:49:49,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:49,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59404235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:49,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:49,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-11-26 10:49:49,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063707303] [2023-11-26 10:49:49,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:49,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-26 10:49:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:49,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-26 10:49:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2023-11-26 10:49:49,620 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 30 states have internal predecessors, (94), 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 10:49:50,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:50,007 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2023-11-26 10:49:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:49:50,007 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 30 states have internal predecessors, (94), 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 32 [2023-11-26 10:49:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:50,008 INFO L225 Difference]: With dead ends: 50 [2023-11-26 10:49:50,008 INFO L226 Difference]: Without dead ends: 49 [2023-11-26 10:49:50,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=358, Invalid=1364, Unknown=0, NotChecked=0, Total=1722 [2023-11-26 10:49:50,010 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:50,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 97 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:49:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-26 10:49:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-26 10:49:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 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 10:49:50,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2023-11-26 10:49:50,018 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 32 [2023-11-26 10:49:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:50,018 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2023-11-26 10:49:50,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 30 states have internal predecessors, (94), 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 10:49:50,018 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2023-11-26 10:49:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 10:49:50,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:50,020 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1] [2023-11-26 10:49:50,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:50,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:50,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:49:50,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1467404898, now seen corresponding path program 3 times [2023-11-26 10:49:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:50,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735520381] [2023-11-26 10:49:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:50,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735520381] [2023-11-26 10:49:50,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735520381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054415284] [2023-11-26 10:49:50,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:49:50,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:50,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:50,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:50,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:49:50,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 10:49:50,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:49:50,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 10:49:50,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:51,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:51,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054415284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:51,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:51,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2023-11-26 10:49:51,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96975345] [2023-11-26 10:49:51,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:51,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-26 10:49:51,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-26 10:49:51,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1830, Unknown=0, NotChecked=0, Total=2162 [2023-11-26 10:49:51,977 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 47 states, 46 states have (on average 3.0869565217391304) internal successors, (142), 47 states have internal predecessors, (142), 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 10:49:52,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:52,971 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2023-11-26 10:49:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 10:49:52,972 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 3.0869565217391304) internal successors, (142), 47 states have internal predecessors, (142), 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 48 [2023-11-26 10:49:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:52,973 INFO L225 Difference]: With dead ends: 98 [2023-11-26 10:49:52,973 INFO L226 Difference]: Without dead ends: 97 [2023-11-26 10:49:52,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=892, Invalid=3530, Unknown=0, NotChecked=0, Total=4422 [2023-11-26 10:49:52,976 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:52,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 69 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:49:52,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-26 10:49:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-26 10:49:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0104166666666667) internal successors, (97), 96 states have internal predecessors, (97), 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 10:49:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2023-11-26 10:49:52,990 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 48 [2023-11-26 10:49:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:52,991 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2023-11-26 10:49:52,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 3.0869565217391304) internal successors, (142), 47 states have internal predecessors, (142), 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 10:49:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2023-11-26 10:49:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-26 10:49:52,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:52,998 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 1, 1, 1] [2023-11-26 10:49:53,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:53,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:53,204 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 10:49:53,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:53,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2041113318, now seen corresponding path program 4 times [2023-11-26 10:49:53,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740895240] [2023-11-26 10:49:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:53,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:54,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:54,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740895240] [2023-11-26 10:49:54,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740895240] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:54,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63634134] [2023-11-26 10:49:54,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 10:49:54,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:54,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:54,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:54,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:49:54,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 10:49:54,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:49:54,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-26 10:49:54,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:56,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:58,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63634134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:58,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:58,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2023-11-26 10:49:58,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561955798] [2023-11-26 10:49:58,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:58,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-11-26 10:49:58,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-11-26 10:49:58,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=7750, Unknown=0, NotChecked=0, Total=8930 [2023-11-26 10:49:58,705 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 95 states, 94 states have (on average 3.0425531914893615) internal successors, (286), 95 states have internal predecessors, (286), 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 10:50:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:03,572 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2023-11-26 10:50:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-26 10:50:03,572 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 3.0425531914893615) internal successors, (286), 95 states have internal predecessors, (286), 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 96 [2023-11-26 10:50:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:03,574 INFO L225 Difference]: With dead ends: 194 [2023-11-26 10:50:03,575 INFO L226 Difference]: Without dead ends: 193 [2023-11-26 10:50:03,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5085 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3640, Invalid=15542, Unknown=0, NotChecked=0, Total=19182 [2023-11-26 10:50:03,585 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 201 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:03,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 121 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:50:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-26 10:50:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-26 10:50:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0052083333333333) internal successors, (193), 192 states have internal predecessors, (193), 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 10:50:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2023-11-26 10:50:03,605 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 96 [2023-11-26 10:50:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:03,606 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2023-11-26 10:50:03,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 3.0425531914893615) internal successors, (286), 95 states have internal predecessors, (286), 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 10:50:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2023-11-26 10:50:03,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-26 10:50:03,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:03,609 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 1, 1, 1] [2023-11-26 10:50:03,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:50:03,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:03,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-26 10:50:03,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 808998262, now seen corresponding path program 5 times [2023-11-26 10:50:03,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:03,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589716579] [2023-11-26 10:50:03,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:03,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 2914 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:08,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:08,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589716579] [2023-11-26 10:50:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589716579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:50:08,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562221210] [2023-11-26 10:50:08,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 10:50:08,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:08,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:08,917 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:08,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f582419f-0ed4-4b1f-a7b8-b92e6321ce34/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:50:09,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-11-26 10:50:09,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:50:09,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-26 10:50:09,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 2914 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:14,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:50:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 2914 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:21,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562221210] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:50:21,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:50:21,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 190 [2023-11-26 10:50:21,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819018335] [2023-11-26 10:50:21,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:50:21,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2023-11-26 10:50:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2023-11-26 10:50:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4412, Invalid=31878, Unknown=0, NotChecked=0, Total=36290 [2023-11-26 10:50:21,022 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand has 191 states, 190 states have (on average 3.0210526315789474) internal successors, (574), 191 states have internal predecessors, (574), 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)