./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce67d33baf8e2191d295422ec2c8649be746cd4f4f75c5de99bdc3950e33cc6c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:50:04,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:50:04,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:50:04,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:50:04,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:50:04,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:50:04,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:50:04,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:50:04,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:50:04,799 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:50:04,799 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:50:04,800 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:50:04,800 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:50:04,801 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:50:04,801 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:50:04,802 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:50:04,802 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:50:04,803 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:50:04,803 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:50:04,804 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:50:04,804 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:50:04,806 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:50:04,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:50:04,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:50:04,809 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:50:04,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:50:04,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:50:04,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:50:04,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:50:04,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:50:04,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:50:04,814 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:50:04,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:50:04,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:50:04,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:50:04,815 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:50:04,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:50:04,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:50:04,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:04,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:50:04,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:50:04,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:50:04,817 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:50:04,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:50:04,818 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:50:04,819 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:50:04,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:50:04,819 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce67d33baf8e2191d295422ec2c8649be746cd4f4f75c5de99bdc3950e33cc6c [2023-11-12 00:50:05,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:50:05,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:50:05,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:50:05,156 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:50:05,157 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:50:05,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2023-11-12 00:50:08,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:50:08,645 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:50:08,646 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2023-11-12 00:50:08,662 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/data/36dc747b1/a2ec84121ccb4f00b6056cf5e521664f/FLAG993d1e9c3 [2023-11-12 00:50:08,683 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/data/36dc747b1/a2ec84121ccb4f00b6056cf5e521664f [2023-11-12 00:50:08,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:50:08,695 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:50:08,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:08,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:50:08,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:50:08,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:08" (1/1) ... [2023-11-12 00:50:08,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39dcf4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:08, skipping insertion in model container [2023-11-12 00:50:08,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:08" (1/1) ... [2023-11-12 00:50:08,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:50:09,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:09,016 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:50:09,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:09,078 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:50:09,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09 WrapperNode [2023-11-12 00:50:09,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:09,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:09,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:50:09,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:50:09,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,130 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 312 [2023-11-12 00:50:09,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:09,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:50:09,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:50:09,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:50:09,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:50:09,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:50:09,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:50:09,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:50:09,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (1/1) ... [2023-11-12 00:50:09,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:09,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:09,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:50:09,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:50:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 00:50:09,260 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 00:50:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:50:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:50:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:50:09,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:50:09,333 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:50:09,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:50:09,787 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:50:09,818 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:50:09,818 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:50:09,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:09 BoogieIcfgContainer [2023-11-12 00:50:09,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:50:09,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:50:09,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:50:09,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:50:09,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:50:08" (1/3) ... [2023-11-12 00:50:09,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6930d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:09, skipping insertion in model container [2023-11-12 00:50:09,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:09" (2/3) ... [2023-11-12 00:50:09,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6930d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:09, skipping insertion in model container [2023-11-12 00:50:09,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:09" (3/3) ... [2023-11-12 00:50:09,831 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2023-11-12 00:50:09,853 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:50:09,853 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-12 00:50:09,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:50:09,947 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=FINITE_AUTOMATA, 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;@4f1c4f80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:50:09,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-12 00:50:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 91 states have (on average 1.7472527472527473) internal successors, (159), 121 states have internal predecessors, (159), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 00:50:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:50:09,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:09,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:09,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:09,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:09,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1355438808, now seen corresponding path program 1 times [2023-11-12 00:50:09,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:09,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246716124] [2023-11-12 00:50:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:09,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:10,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:10,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246716124] [2023-11-12 00:50:10,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246716124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:10,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:10,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:50:10,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978697605] [2023-11-12 00:50:10,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:10,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:10,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:10,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:10,236 INFO L87 Difference]: Start difference. First operand has 141 states, 91 states have (on average 1.7472527472527473) internal successors, (159), 121 states have internal predecessors, (159), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-11-12 00:50:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:10,346 INFO L93 Difference]: Finished difference Result 144 states and 197 transitions. [2023-11-12 00:50:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:10,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 [2023-11-12 00:50:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:10,364 INFO L225 Difference]: With dead ends: 144 [2023-11-12 00:50:10,365 INFO L226 Difference]: Without dead ends: 95 [2023-11-12 00:50:10,370 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 [2023-11-12 00:50:10,377 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 121 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:10,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 134 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:50:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-12 00:50:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-12 00:50:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.4) internal successors, (98), 94 states have internal predecessors, (98), 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) [2023-11-12 00:50:10,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2023-11-12 00:50:10,451 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 12 [2023-11-12 00:50:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:10,451 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2023-11-12 00:50:10,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-11-12 00:50:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2023-11-12 00:50:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:50:10,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:10,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:10,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:50:10,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:10,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash 931069994, now seen corresponding path program 1 times [2023-11-12 00:50:10,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:10,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140018159] [2023-11-12 00:50:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:10,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:10,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:10,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140018159] [2023-11-12 00:50:10,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140018159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:10,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:10,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:50:10,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252918930] [2023-11-12 00:50:10,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:10,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:10,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:10,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:10,572 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-12 00:50:10,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:10,660 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2023-11-12 00:50:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:10,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2023-11-12 00:50:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:10,662 INFO L225 Difference]: With dead ends: 95 [2023-11-12 00:50:10,663 INFO L226 Difference]: Without dead ends: 90 [2023-11-12 00:50:10,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:10,665 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:10,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 65 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:50:10,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-12 00:50:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-11-12 00:50:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 89 states have internal predecessors, (93), 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) [2023-11-12 00:50:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2023-11-12 00:50:10,674 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 13 [2023-11-12 00:50:10,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:10,679 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2023-11-12 00:50:10,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-12 00:50:10,679 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2023-11-12 00:50:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:50:10,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:10,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:50:10,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:10,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1405069452, now seen corresponding path program 1 times [2023-11-12 00:50:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878339830] [2023-11-12 00:50:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:10,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:10,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:10,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878339830] [2023-11-12 00:50:10,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878339830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:10,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:10,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:50:10,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955104562] [2023-11-12 00:50:10,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:10,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:50:10,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:10,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:50:10,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:50:10,833 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2023-11-12 00:50:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:10,974 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2023-11-12 00:50:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:50:10,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) Word has length 15 [2023-11-12 00:50:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:10,984 INFO L225 Difference]: With dead ends: 90 [2023-11-12 00:50:10,985 INFO L226 Difference]: Without dead ends: 82 [2023-11-12 00:50:10,987 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 [2023-11-12 00:50:10,990 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 139 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:10,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 58 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:50:10,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-12 00:50:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-12 00:50:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 81 states have internal predecessors, (85), 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) [2023-11-12 00:50:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2023-11-12 00:50:11,005 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 15 [2023-11-12 00:50:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:11,006 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2023-11-12 00:50:11,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2023-11-12 00:50:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2023-11-12 00:50:11,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:50:11,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:11,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:11,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:50:11,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:11,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash 607480143, now seen corresponding path program 1 times [2023-11-12 00:50:11,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:11,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970778662] [2023-11-12 00:50:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:11,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:11,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:11,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970778662] [2023-11-12 00:50:11,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970778662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:11,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:11,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:50:11,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024952491] [2023-11-12 00:50:11,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:11,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:50:11,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:50:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:50:11,089 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2023-11-12 00:50:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:11,218 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2023-11-12 00:50:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:50:11,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) Word has length 16 [2023-11-12 00:50:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:11,221 INFO L225 Difference]: With dead ends: 114 [2023-11-12 00:50:11,221 INFO L226 Difference]: Without dead ends: 107 [2023-11-12 00:50:11,222 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 [2023-11-12 00:50:11,234 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 106 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:11,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 120 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:50:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-12 00:50:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-12 00:50:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 106 states have internal predecessors, (112), 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) [2023-11-12 00:50:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2023-11-12 00:50:11,273 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 16 [2023-11-12 00:50:11,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:11,274 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2023-11-12 00:50:11,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2023-11-12 00:50:11,274 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2023-11-12 00:50:11,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 00:50:11,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:11,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:11,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:50:11,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:11,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1705362403, now seen corresponding path program 1 times [2023-11-12 00:50:11,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:11,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448538834] [2023-11-12 00:50:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:11,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:11,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448538834] [2023-11-12 00:50:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448538834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:50:11,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861762743] [2023-11-12 00:50:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:11,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:11,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:11,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:50:11,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:50:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:11,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:50:11,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:50:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:11,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:50:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:11,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861762743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:50:11,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1395838645] [2023-11-12 00:50:11,908 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-12 00:50:11,909 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:50:11,914 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:50:11,920 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:50:11,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:50:13,364 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 20 iterations. Over-approximation may be very coarse. [2023-11-12 00:50:14,239 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:50:18,346 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1236#(and (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483648)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (<= 2 |ULTIMATE.start_main_~main__urilen~0#1|) (<= 2147483647 |ULTIMATE.start_main_~main__cp~0#1|) (= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_17~0#1|) (<= |ULTIMATE.start_main_~main__urilen~0#1| 1000000) (<= |ULTIMATE.start_main_~main__tokenlen~0#1| 1000000) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) (<= |ULTIMATE.start_main_~main__scheme~0#1| 999999) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1| 1) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483647) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~17#1| 1) (<= |ULTIMATE.start_main_~__tmp_17~0#1| 1) (= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (= |ULTIMATE.start_main_~__tmp_18~0#1| 1) (<= 1 |ULTIMATE.start_main_~main__scheme~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1| 0)) (= ~__return_main~0 0) (<= 1 |ULTIMATE.start_main_~main__tokenlen~0#1|) (= ~__return_375~0 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 1))' at error location [2023-11-12 00:50:18,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:50:18,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:50:18,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-12 00:50:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806770876] [2023-11-12 00:50:18,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:50:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:50:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:18,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:50:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2023-11-12 00:50:18,350 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 10 states, 9 states have (on average 11.555555555555555) internal successors, (104), 10 states have internal predecessors, (104), 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) [2023-11-12 00:50:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:19,030 INFO L93 Difference]: Finished difference Result 450 states and 499 transitions. [2023-11-12 00:50:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:50:19,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.555555555555555) internal successors, (104), 10 states have internal predecessors, (104), 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 39 [2023-11-12 00:50:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:19,035 INFO L225 Difference]: With dead ends: 450 [2023-11-12 00:50:19,035 INFO L226 Difference]: Without dead ends: 444 [2023-11-12 00:50:19,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=504, Invalid=1302, Unknown=0, NotChecked=0, Total=1806 [2023-11-12 00:50:19,039 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1022 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:19,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 250 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:50:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-12 00:50:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 281. [2023-11-12 00:50:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 274 states have (on average 1.145985401459854) internal successors, (314), 280 states have internal predecessors, (314), 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) [2023-11-12 00:50:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 314 transitions. [2023-11-12 00:50:19,083 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 314 transitions. Word has length 39 [2023-11-12 00:50:19,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:19,087 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 314 transitions. [2023-11-12 00:50:19,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.555555555555555) internal successors, (104), 10 states have internal predecessors, (104), 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) [2023-11-12 00:50:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 314 transitions. [2023-11-12 00:50:19,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 00:50:19,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:19,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:19,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:50:19,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:19,298 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:19,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:19,299 INFO L85 PathProgramCache]: Analyzing trace with hash 99794575, now seen corresponding path program 1 times [2023-11-12 00:50:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:19,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102399451] [2023-11-12 00:50:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:19,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:19,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102399451] [2023-11-12 00:50:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102399451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:19,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:19,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:50:19,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327287048] [2023-11-12 00:50:19,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:19,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:19,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:19,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:19,361 INFO L87 Difference]: Start difference. First operand 281 states and 314 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2023-11-12 00:50:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:19,437 INFO L93 Difference]: Finished difference Result 393 states and 447 transitions. [2023-11-12 00:50:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:19,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) Word has length 52 [2023-11-12 00:50:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:19,440 INFO L225 Difference]: With dead ends: 393 [2023-11-12 00:50:19,440 INFO L226 Difference]: Without dead ends: 281 [2023-11-12 00:50:19,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:19,443 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:19,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:50:19,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-12 00:50:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-12 00:50:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 274 states have (on average 1.1240875912408759) internal successors, (308), 280 states have internal predecessors, (308), 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) [2023-11-12 00:50:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 308 transitions. [2023-11-12 00:50:19,458 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 308 transitions. Word has length 52 [2023-11-12 00:50:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:19,459 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 308 transitions. [2023-11-12 00:50:19,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2023-11-12 00:50:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 308 transitions. [2023-11-12 00:50:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-12 00:50:19,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:19,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:19,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:50:19,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:19,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2018335373, now seen corresponding path program 1 times [2023-11-12 00:50:19,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:19,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411497991] [2023-11-12 00:50:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:19,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:19,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411497991] [2023-11-12 00:50:19,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411497991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:19,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:19,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:50:19,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574189418] [2023-11-12 00:50:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:19,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:19,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:19,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:19,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:19,587 INFO L87 Difference]: Start difference. First operand 281 states and 308 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-11-12 00:50:19,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:19,602 INFO L93 Difference]: Finished difference Result 281 states and 308 transitions. [2023-11-12 00:50:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:19,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2023-11-12 00:50:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:19,607 INFO L225 Difference]: With dead ends: 281 [2023-11-12 00:50:19,607 INFO L226 Difference]: Without dead ends: 280 [2023-11-12 00:50:19,607 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 [2023-11-12 00:50:19,609 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 26 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:19,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 73 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:50:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-12 00:50:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-11-12 00:50:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 274 states have (on average 1.1058394160583942) internal successors, (303), 279 states have internal predecessors, (303), 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) [2023-11-12 00:50:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 303 transitions. [2023-11-12 00:50:19,619 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 303 transitions. Word has length 53 [2023-11-12 00:50:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:19,620 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 303 transitions. [2023-11-12 00:50:19,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-11-12 00:50:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 303 transitions. [2023-11-12 00:50:19,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 00:50:19,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:19,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:19,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:50:19,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:19,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1856113109, now seen corresponding path program 1 times [2023-11-12 00:50:19,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985596614] [2023-11-12 00:50:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:19,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985596614] [2023-11-12 00:50:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985596614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:19,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:19,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:50:19,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293605716] [2023-11-12 00:50:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:19,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:19,731 INFO L87 Difference]: Start difference. First operand 280 states and 303 transitions. Second operand has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2023-11-12 00:50:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:19,743 INFO L93 Difference]: Finished difference Result 280 states and 303 transitions. [2023-11-12 00:50:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:19,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 54 [2023-11-12 00:50:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:19,747 INFO L225 Difference]: With dead ends: 280 [2023-11-12 00:50:19,747 INFO L226 Difference]: Without dead ends: 279 [2023-11-12 00:50:19,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:19,751 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:19,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 69 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:50:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-12 00:50:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-11-12 00:50:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 1.0875912408759123) internal successors, (298), 278 states have internal predecessors, (298), 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) [2023-11-12 00:50:19,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 298 transitions. [2023-11-12 00:50:19,761 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 298 transitions. Word has length 54 [2023-11-12 00:50:19,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:19,761 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 298 transitions. [2023-11-12 00:50:19,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2023-11-12 00:50:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 298 transitions. [2023-11-12 00:50:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 00:50:19,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:19,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:19,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:50:19,768 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:19,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash 991243967, now seen corresponding path program 1 times [2023-11-12 00:50:19,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:19,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274888044] [2023-11-12 00:50:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:19,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:19,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:19,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274888044] [2023-11-12 00:50:19,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274888044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:19,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:19,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:50:19,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221069898] [2023-11-12 00:50:19,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:19,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:19,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:19,864 INFO L87 Difference]: Start difference. First operand 279 states and 298 transitions. Second operand has 3 states, 2 states have (on average 29.5) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-11-12 00:50:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:19,880 INFO L93 Difference]: Finished difference Result 336 states and 365 transitions. [2023-11-12 00:50:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:19,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.5) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2023-11-12 00:50:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:19,884 INFO L225 Difference]: With dead ends: 336 [2023-11-12 00:50:19,884 INFO L226 Difference]: Without dead ends: 334 [2023-11-12 00:50:19,884 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 [2023-11-12 00:50:19,887 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 5 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:19,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 140 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:50:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-12 00:50:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 333. [2023-11-12 00:50:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 328 states have (on average 1.0823170731707317) internal successors, (355), 332 states have internal predecessors, (355), 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) [2023-11-12 00:50:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 355 transitions. [2023-11-12 00:50:19,898 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 355 transitions. Word has length 59 [2023-11-12 00:50:19,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:19,899 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 355 transitions. [2023-11-12 00:50:19,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 29.5) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-11-12 00:50:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 355 transitions. [2023-11-12 00:50:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 00:50:19,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:19,901 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:19,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:50:19,903 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:19,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:19,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1115291563, now seen corresponding path program 2 times [2023-11-12 00:50:19,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:19,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983385840] [2023-11-12 00:50:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:19,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:20,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983385840] [2023-11-12 00:50:20,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983385840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:50:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477568854] [2023-11-12 00:50:20,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:50:20,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:20,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:20,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:50:20,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:50:20,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:50:20,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:50:20,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:50:20,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:50:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-12 00:50:20,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:50:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-12 00:50:20,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477568854] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:50:20,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [884132192] [2023-11-12 00:50:20,549 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-12 00:50:20,549 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:50:20,550 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:50:20,550 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:50:20,550 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:50:21,126 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 20 iterations. Over-approximation may be very coarse. [2023-11-12 00:50:21,654 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:50:25,511 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4919#(and (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483648)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (<= 2 |ULTIMATE.start_main_~main__urilen~0#1|) (<= 2147483647 |ULTIMATE.start_main_~main__cp~0#1|) (= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_17~0#1|) (<= |ULTIMATE.start_main_~main__urilen~0#1| 1000000) (<= |ULTIMATE.start_main_~main__tokenlen~0#1| 1000000) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) (<= |ULTIMATE.start_main_~main__scheme~0#1| 999999) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1| 1) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483647) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~17#1| 1) (<= |ULTIMATE.start_main_~__tmp_17~0#1| 1) (= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (= |ULTIMATE.start_main_~__tmp_18~0#1| 1) (<= 1 |ULTIMATE.start_main_~main__scheme~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1| 0)) (= ~__return_main~0 0) (<= 1 |ULTIMATE.start_main_~main__tokenlen~0#1|) (= ~__return_375~0 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 1))' at error location [2023-11-12 00:50:25,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:50:25,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:50:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2023-11-12 00:50:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029969866] [2023-11-12 00:50:25,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:50:25,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:50:25,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:50:25,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2023-11-12 00:50:25,514 INFO L87 Difference]: Start difference. First operand 333 states and 355 transitions. Second operand has 13 states, 12 states have (on average 10.583333333333334) internal successors, (127), 13 states have internal predecessors, (127), 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) [2023-11-12 00:50:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:25,900 INFO L93 Difference]: Finished difference Result 551 states and 595 transitions. [2023-11-12 00:50:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 00:50:25,900 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 10.583333333333334) internal successors, (127), 13 states have internal predecessors, (127), 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 71 [2023-11-12 00:50:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:25,904 INFO L225 Difference]: With dead ends: 551 [2023-11-12 00:50:25,904 INFO L226 Difference]: Without dead ends: 548 [2023-11-12 00:50:25,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 177 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=494, Invalid=1398, Unknown=0, NotChecked=0, Total=1892 [2023-11-12 00:50:25,905 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 708 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:25,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 160 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:50:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-12 00:50:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 281. [2023-11-12 00:50:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 278 states have (on average 1.10431654676259) internal successors, (307), 280 states have internal predecessors, (307), 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) [2023-11-12 00:50:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 307 transitions. [2023-11-12 00:50:25,917 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 307 transitions. Word has length 71 [2023-11-12 00:50:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:25,917 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 307 transitions. [2023-11-12 00:50:25,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 10.583333333333334) internal successors, (127), 13 states have internal predecessors, (127), 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) [2023-11-12 00:50:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 307 transitions. [2023-11-12 00:50:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 00:50:25,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:25,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:25,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:50:26,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 00:50:26,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:26,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash 849203905, now seen corresponding path program 1 times [2023-11-12 00:50:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:26,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757974075] [2023-11-12 00:50:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:26,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:26,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:26,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757974075] [2023-11-12 00:50:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757974075] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:50:26,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652348149] [2023-11-12 00:50:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:26,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:26,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:26,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:50:26,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:50:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:26,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:50:26,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:50:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:26,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:50:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652348149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:26,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:50:26,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 00:50:26,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109717135] [2023-11-12 00:50:26,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:26,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:50:26,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:26,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:50:26,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:50:26,381 INFO L87 Difference]: Start difference. First operand 281 states and 307 transitions. Second operand has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 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) [2023-11-12 00:50:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:26,398 INFO L93 Difference]: Finished difference Result 282 states and 307 transitions. [2023-11-12 00:50:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:50:26,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2023-11-12 00:50:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:26,400 INFO L225 Difference]: With dead ends: 282 [2023-11-12 00:50:26,401 INFO L226 Difference]: Without dead ends: 281 [2023-11-12 00:50:26,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:50:26,402 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 9 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:26,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 144 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:50:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-12 00:50:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280. [2023-11-12 00:50:26,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 278 states have (on average 1.0827338129496402) internal successors, (301), 279 states have internal predecessors, (301), 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) [2023-11-12 00:50:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 301 transitions. [2023-11-12 00:50:26,410 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 301 transitions. Word has length 76 [2023-11-12 00:50:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:26,411 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 301 transitions. [2023-11-12 00:50:26,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 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) [2023-11-12 00:50:26,411 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 301 transitions. [2023-11-12 00:50:26,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 00:50:26,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:26,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:26,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 00:50:26,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 00:50:26,618 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:26,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash 555517535, now seen corresponding path program 1 times [2023-11-12 00:50:26,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:26,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872411445] [2023-11-12 00:50:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:26,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:50:26,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:26,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872411445] [2023-11-12 00:50:26,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872411445] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:50:26,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693836699] [2023-11-12 00:50:26,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:26,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:26,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:50:26,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:50:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:26,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:50:26,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:50:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:50:26,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:50:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:50:26,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693836699] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:50:26,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1691907271] [2023-11-12 00:50:26,989 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-11-12 00:50:26,990 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:50:26,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:50:26,990 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:50:26,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:50:27,653 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 20 iterations. Over-approximation may be very coarse. [2023-11-12 00:50:30,462 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:50:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1691907271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:42,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:50:42,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [3, 3, 3] total 47 [2023-11-12 00:50:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416741362] [2023-11-12 00:50:42,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:42,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-12 00:50:42,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:42,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-12 00:50:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=1770, Unknown=0, NotChecked=0, Total=2256 [2023-11-12 00:50:42,941 INFO L87 Difference]: Start difference. First operand 280 states and 301 transitions. Second operand has 42 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 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) [2023-11-12 00:50:54,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:54,968 INFO L93 Difference]: Finished difference Result 497 states and 535 transitions. [2023-11-12 00:50:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-12 00:50:54,968 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 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 77 [2023-11-12 00:50:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:54,970 INFO L225 Difference]: With dead ends: 497 [2023-11-12 00:50:54,970 INFO L226 Difference]: Without dead ends: 232 [2023-11-12 00:50:54,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 179 SyntacticMatches, 7 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=1494, Invalid=4206, Unknown=0, NotChecked=0, Total=5700 [2023-11-12 00:50:54,974 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 316 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:54,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 73 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:50:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-12 00:50:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 228. [2023-11-12 00:50:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 226 states have (on average 1.084070796460177) internal successors, (245), 227 states have internal predecessors, (245), 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) [2023-11-12 00:50:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 245 transitions. [2023-11-12 00:50:54,982 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 245 transitions. Word has length 77 [2023-11-12 00:50:54,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:54,982 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 245 transitions. [2023-11-12 00:50:54,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 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) [2023-11-12 00:50:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 245 transitions. [2023-11-12 00:50:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-12 00:50:54,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:54,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:54,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:50:55,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:55,190 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-12 00:50:55,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash 481209041, now seen corresponding path program 1 times [2023-11-12 00:50:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:55,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673831592] [2023-11-12 00:50:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:55,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:50:55,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673831592] [2023-11-12 00:50:55,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673831592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:50:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397439050] [2023-11-12 00:50:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:55,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:55,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:55,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:50:55,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2b74d6-4e76-4e2c-9744-3bd37c09239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:50:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:55,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:50:55,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:50:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 00:50:55,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:50:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 00:50:55,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397439050] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:50:55,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [202645981] [2023-11-12 00:50:55,605 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2023-11-12 00:50:55,606 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:50:55,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:50:55,608 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:50:55,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:50:56,040 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 20 iterations. Over-approximation may be very coarse. [2023-11-12 00:50:57,419 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 43 iterations. Over-approximation may be very coarse. [2023-11-12 00:50:58,953 INFO L180 IcfgInterpreter]: Interpretation finished