./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --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 64bit --witnessprinter.graph.data.programhash 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:49:04,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:49:04,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:49:04,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:49:04,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:49:04,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:49:04,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:49:04,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:49:04,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:49:04,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:49:04,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:49:04,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:49:04,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:49:04,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:49:04,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:49:04,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:49:04,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:49:04,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:49:04,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:49:04,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:49:04,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:49:04,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:49:04,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:49:04,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:49:04,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:49:04,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:49:04,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:49:04,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:49:04,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:49:04,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:49:04,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:49:04,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:49:04,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:49:04,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:49:04,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:49:04,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:49:04,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:49:04,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:49:04,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:49:04,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:49:04,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:49:04,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 01:49:04,200 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:49:04,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:49:04,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:49:04,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:49:04,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:49:04,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:49:04,202 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:49:04,203 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:49:04,203 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:49:04,203 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:49:04,203 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:49:04,204 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:49:04,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:49:04,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:49:04,204 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:49:04,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:49:04,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:49:04,205 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:49:04,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:49:04,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:49:04,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:49:04,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:49:04,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:49:04,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:49:04,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:49:04,208 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:49:04,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:49:04,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:49:04,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:49:04,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:49:04,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:49:04,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:49:04,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:49:04,210 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:49:04,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:49:04,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:49:04,211 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:49:04,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:49:04,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:49:04,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:49:04,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a [2022-11-22 01:49:04,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:49:04,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:49:04,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:49:04,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:49:04,513 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:49:04,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2022-11-22 01:49:07,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:49:07,823 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:49:07,824 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2022-11-22 01:49:07,832 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/data/fb388be0e/88a9837b6b444c4f997c35e62d342be5/FLAG0d0709f81 [2022-11-22 01:49:07,856 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/data/fb388be0e/88a9837b6b444c4f997c35e62d342be5 [2022-11-22 01:49:07,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:49:07,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:49:07,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:49:07,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:49:07,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:49:07,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:07" (1/1) ... [2022-11-22 01:49:07,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6402b4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:07, skipping insertion in model container [2022-11-22 01:49:07,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:07" (1/1) ... [2022-11-22 01:49:07,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:49:07,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:49:08,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:49:08,087 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:49:08,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:49:08,114 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:49:08,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08 WrapperNode [2022-11-22 01:49:08,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:49:08,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:49:08,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:49:08,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:49:08,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,144 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-11-22 01:49:08,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:49:08,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:49:08,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:49:08,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:49:08,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,173 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:49:08,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:49:08,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:49:08,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:49:08,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (1/1) ... [2022-11-22 01:49:08,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:49:08,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:08,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:49:08,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:49:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:49:08,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:49:08,335 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:49:08,337 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:49:08,502 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:49:08,518 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:49:08,518 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:49:08,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:08 BoogieIcfgContainer [2022-11-22 01:49:08,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:49:08,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:49:08,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:49:08,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:49:08,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:49:07" (1/3) ... [2022-11-22 01:49:08,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7560c779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:08, skipping insertion in model container [2022-11-22 01:49:08,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:08" (2/3) ... [2022-11-22 01:49:08,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7560c779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:08, skipping insertion in model container [2022-11-22 01:49:08,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:08" (3/3) ... [2022-11-22 01:49:08,541 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2022-11-22 01:49:08,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:49:08,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 01:49:08,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:49:08,683 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=LoopsAndPotentialCycles, 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;@1e183b08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:49:08,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 01:49:08,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-11-22 01:49:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:49:08,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:08,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:49:08,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2022-11-22 01:49:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:08,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549710304] [2022-11-22 01:49:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:08,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:08,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:08,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549710304] [2022-11-22 01:49:08,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549710304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:08,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:08,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:49:08,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474952444] [2022-11-22 01:49:08,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:08,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:08,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:08,999 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:09,102 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-22 01:49:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:09,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:49:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:09,115 INFO L225 Difference]: With dead ends: 32 [2022-11-22 01:49:09,115 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 01:49:09,119 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 [2022-11-22 01:49:09,125 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:09,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 01:49:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-22 01:49:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 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) [2022-11-22 01:49:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-22 01:49:09,166 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2022-11-22 01:49:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:09,167 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-22 01:49:09,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:09,167 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-22 01:49:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:49:09,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:09,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:49:09,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:49:09,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2022-11-22 01:49:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:09,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046629827] [2022-11-22 01:49:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:09,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:09,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:09,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046629827] [2022-11-22 01:49:09,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046629827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:09,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:09,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:49:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323437892] [2022-11-22 01:49:09,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:09,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:09,262 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:09,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:09,309 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-22 01:49:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:09,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 01:49:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:09,311 INFO L225 Difference]: With dead ends: 40 [2022-11-22 01:49:09,311 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:49:09,312 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 [2022-11-22 01:49:09,313 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:09,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:09,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:49:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-22 01:49:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 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) [2022-11-22 01:49:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-11-22 01:49:09,321 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2022-11-22 01:49:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:09,321 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-11-22 01:49:09,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-11-22 01:49:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:49:09,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:09,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:09,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:49:09,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:09,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2022-11-22 01:49:09,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:09,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856804337] [2022-11-22 01:49:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:09,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:09,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856804337] [2022-11-22 01:49:09,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856804337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:09,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:09,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:49:09,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999328657] [2022-11-22 01:49:09,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:09,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:09,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:09,383 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:09,427 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-22 01:49:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:09,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:49:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:09,434 INFO L225 Difference]: With dead ends: 42 [2022-11-22 01:49:09,434 INFO L226 Difference]: Without dead ends: 41 [2022-11-22 01:49:09,436 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 [2022-11-22 01:49:09,438 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:09,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-22 01:49:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2022-11-22 01:49:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 38 states have internal predecessors, (50), 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) [2022-11-22 01:49:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2022-11-22 01:49:09,454 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 7 [2022-11-22 01:49:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:09,455 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2022-11-22 01:49:09,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2022-11-22 01:49:09,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:49:09,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:09,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:09,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:49:09,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2022-11-22 01:49:09,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:09,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576006989] [2022-11-22 01:49:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:09,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:09,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:09,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576006989] [2022-11-22 01:49:09,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576006989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:09,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:09,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:49:09,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96610343] [2022-11-22 01:49:09,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:09,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:09,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:09,511 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:09,529 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-11-22 01:49:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:09,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:49:09,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:09,531 INFO L225 Difference]: With dead ends: 39 [2022-11-22 01:49:09,531 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:49:09,532 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 [2022-11-22 01:49:09,533 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:09,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:09,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:49:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-22 01:49:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-11-22 01:49:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-22 01:49:09,540 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 8 [2022-11-22 01:49:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:09,541 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-22 01:49:09,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-22 01:49:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:49:09,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:09,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:09,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:49:09,543 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2026065806, now seen corresponding path program 1 times [2022-11-22 01:49:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:09,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321095608] [2022-11-22 01:49:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:09,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:09,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321095608] [2022-11-22 01:49:09,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321095608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:09,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784123228] [2022-11-22 01:49:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:09,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:09,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:09,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:09,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:49:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:09,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:49:09,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:09,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:09,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784123228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:09,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1427275779] [2022-11-22 01:49:09,894 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:09,894 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:09,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:09,904 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:09,905 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:10,319 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:10,637 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '418#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:10,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:10,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:10,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 01:49:10,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682179075] [2022-11-22 01:49:10,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:10,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:49:10,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:10,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:49:10,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:49:10,640 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-22 01:49:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:10,716 INFO L93 Difference]: Finished difference Result 97 states and 134 transitions. [2022-11-22 01:49:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:49:10,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:49:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:10,718 INFO L225 Difference]: With dead ends: 97 [2022-11-22 01:49:10,718 INFO L226 Difference]: Without dead ends: 95 [2022-11-22 01:49:10,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:49:10,720 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:10,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-22 01:49:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2022-11-22 01:49:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 77 states have internal predecessors, (102), 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) [2022-11-22 01:49:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2022-11-22 01:49:10,730 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 11 [2022-11-22 01:49:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:10,730 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2022-11-22 01:49:10,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-22 01:49:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2022-11-22 01:49:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:49:10,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:10,732 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:10,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:10,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:10,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:10,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:10,939 INFO L85 PathProgramCache]: Analyzing trace with hash -974279381, now seen corresponding path program 1 times [2022-11-22 01:49:10,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:10,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494945728] [2022-11-22 01:49:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:10,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:10,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494945728] [2022-11-22 01:49:10,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494945728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:10,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980307956] [2022-11-22 01:49:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:10,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:10,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:10,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:11,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:49:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:11,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:49:11,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:11,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:11,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980307956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1784090198] [2022-11-22 01:49:11,122 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:49:11,122 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:11,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:11,123 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:11,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:11,257 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:11,423 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '694#(and (< (+ 2147483649 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:11,424 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:11,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:11,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 01:49:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98974032] [2022-11-22 01:49:11,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:11,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:49:11,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:49:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:49:11,426 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:11,517 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2022-11-22 01:49:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:49:11,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 01:49:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:11,523 INFO L225 Difference]: With dead ends: 134 [2022-11-22 01:49:11,524 INFO L226 Difference]: Without dead ends: 132 [2022-11-22 01:49:11,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:49:11,525 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:11,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 19 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-22 01:49:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2022-11-22 01:49:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.351063829787234) internal successors, (127), 97 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) [2022-11-22 01:49:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2022-11-22 01:49:11,536 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 12 [2022-11-22 01:49:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:11,537 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2022-11-22 01:49:11,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2022-11-22 01:49:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:49:11,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:11,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:49:11,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:11,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:11,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:11,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1429056119, now seen corresponding path program 1 times [2022-11-22 01:49:11,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:11,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328733824] [2022-11-22 01:49:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:11,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:11,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:11,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328733824] [2022-11-22 01:49:11,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328733824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:11,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224091966] [2022-11-22 01:49:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:11,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:11,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:11,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:11,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:49:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:11,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:49:11,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:11,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:11,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224091966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:11,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [388104929] [2022-11-22 01:49:11,909 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:11,909 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:11,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:11,910 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:11,912 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:12,057 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:12,350 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1041#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:12,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:12,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:12,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 01:49:12,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203349329] [2022-11-22 01:49:12,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:12,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:49:12,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:49:12,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:49:12,352 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2022-11-22 01:49:12,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:12,389 INFO L93 Difference]: Finished difference Result 206 states and 267 transitions. [2022-11-22 01:49:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:49:12,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 [2022-11-22 01:49:12,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:12,391 INFO L225 Difference]: With dead ends: 206 [2022-11-22 01:49:12,391 INFO L226 Difference]: Without dead ends: 205 [2022-11-22 01:49:12,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:49:12,392 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:12,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 42 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:12,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-22 01:49:12,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2022-11-22 01:49:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 199 states have (on average 1.2412060301507537) internal successors, (247), 202 states have internal predecessors, (247), 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) [2022-11-22 01:49:12,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 247 transitions. [2022-11-22 01:49:12,408 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 247 transitions. Word has length 13 [2022-11-22 01:49:12,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:12,408 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 247 transitions. [2022-11-22 01:49:12,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2022-11-22 01:49:12,408 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 247 transitions. [2022-11-22 01:49:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 01:49:12,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:12,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1] [2022-11-22 01:49:12,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:12,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:12,615 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:12,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash -385077154, now seen corresponding path program 1 times [2022-11-22 01:49:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:12,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022713442] [2022-11-22 01:49:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:12,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:12,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:12,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022713442] [2022-11-22 01:49:12,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022713442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:12,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176540109] [2022-11-22 01:49:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:12,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:12,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:12,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:12,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:49:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:12,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:49:12,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:12,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:12,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176540109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:12,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [345233707] [2022-11-22 01:49:12,814 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:12,814 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:12,815 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:12,815 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:12,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:12,894 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:13,057 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1620#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:13,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:13,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:13,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-22 01:49:13,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287158946] [2022-11-22 01:49:13,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:13,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:49:13,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:13,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:49:13,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:49:13,059 INFO L87 Difference]: Start difference. First operand 203 states and 247 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:13,148 INFO L93 Difference]: Finished difference Result 398 states and 514 transitions. [2022-11-22 01:49:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:49:13,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-22 01:49:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:13,150 INFO L225 Difference]: With dead ends: 398 [2022-11-22 01:49:13,150 INFO L226 Difference]: Without dead ends: 397 [2022-11-22 01:49:13,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:49:13,151 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:13,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 44 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-22 01:49:13,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 329. [2022-11-22 01:49:13,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 325 states have (on average 1.2769230769230768) internal successors, (415), 328 states have internal predecessors, (415), 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) [2022-11-22 01:49:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 415 transitions. [2022-11-22 01:49:13,174 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 415 transitions. Word has length 18 [2022-11-22 01:49:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:13,175 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 415 transitions. [2022-11-22 01:49:13,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 415 transitions. [2022-11-22 01:49:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 01:49:13,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:13,177 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2022-11-22 01:49:13,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:13,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 01:49:13,382 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2043316153, now seen corresponding path program 2 times [2022-11-22 01:49:13,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:13,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163620687] [2022-11-22 01:49:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:13,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:13,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:13,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163620687] [2022-11-22 01:49:13,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163620687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:13,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439617604] [2022-11-22 01:49:13,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:49:13,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:13,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:13,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:13,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:49:13,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 01:49:13,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:49:13,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:49:13,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:13,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:13,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439617604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:13,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1667981931] [2022-11-22 01:49:13,721 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:13,721 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:13,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:13,722 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:13,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:13,845 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:14,137 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2629#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:14,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:14,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:14,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-22 01:49:14,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746870806] [2022-11-22 01:49:14,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:14,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:49:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:14,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:49:14,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:49:14,139 INFO L87 Difference]: Start difference. First operand 329 states and 415 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2022-11-22 01:49:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:14,297 INFO L93 Difference]: Finished difference Result 870 states and 1194 transitions. [2022-11-22 01:49:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:49:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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 29 [2022-11-22 01:49:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:14,301 INFO L225 Difference]: With dead ends: 870 [2022-11-22 01:49:14,301 INFO L226 Difference]: Without dead ends: 868 [2022-11-22 01:49:14,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:49:14,306 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 83 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:14,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 76 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-11-22 01:49:14,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 572. [2022-11-22 01:49:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 568 states have (on average 1.2869718309859155) internal successors, (731), 571 states have internal predecessors, (731), 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) [2022-11-22 01:49:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 731 transitions. [2022-11-22 01:49:14,336 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 731 transitions. Word has length 29 [2022-11-22 01:49:14,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:14,337 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 731 transitions. [2022-11-22 01:49:14,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2022-11-22 01:49:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 731 transitions. [2022-11-22 01:49:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-22 01:49:14,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:14,345 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2022-11-22 01:49:14,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 01:49:14,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-22 01:49:14,550 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:14,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:14,551 INFO L85 PathProgramCache]: Analyzing trace with hash 826770402, now seen corresponding path program 2 times [2022-11-22 01:49:14,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:14,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468258000] [2022-11-22 01:49:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:14,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 01:49:14,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:14,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468258000] [2022-11-22 01:49:14,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468258000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:14,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820171132] [2022-11-22 01:49:14,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:49:14,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:14,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:14,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:14,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:49:14,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 01:49:14,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:49:14,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:49:14,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 01:49:14,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 01:49:14,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820171132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:14,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1624261065] [2022-11-22 01:49:14,747 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:14,748 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:14,748 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:14,748 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:14,748 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:14,858 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:15,116 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4456#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:15,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:15,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:15,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2022-11-22 01:49:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231496162] [2022-11-22 01:49:15,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:49:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:49:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:49:15,118 INFO L87 Difference]: Start difference. First operand 572 states and 731 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2022-11-22 01:49:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:15,151 INFO L93 Difference]: Finished difference Result 572 states and 731 transitions. [2022-11-22 01:49:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:49:15,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 31 [2022-11-22 01:49:15,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:15,154 INFO L225 Difference]: With dead ends: 572 [2022-11-22 01:49:15,154 INFO L226 Difference]: Without dead ends: 571 [2022-11-22 01:49:15,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:49:15,155 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:15,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-22 01:49:15,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 456. [2022-11-22 01:49:15,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 453 states have (on average 1.1898454746136866) internal successors, (539), 455 states have internal predecessors, (539), 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) [2022-11-22 01:49:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 539 transitions. [2022-11-22 01:49:15,179 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 539 transitions. Word has length 31 [2022-11-22 01:49:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:15,182 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 539 transitions. [2022-11-22 01:49:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2022-11-22 01:49:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 539 transitions. [2022-11-22 01:49:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-22 01:49:15,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:15,185 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1] [2022-11-22 01:49:15,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:15,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:15,391 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:15,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 435226258, now seen corresponding path program 2 times [2022-11-22 01:49:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:15,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851260745] [2022-11-22 01:49:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:15,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:15,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851260745] [2022-11-22 01:49:15,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851260745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:15,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878296271] [2022-11-22 01:49:15,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:49:15,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:15,566 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:15,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:49:15,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-22 01:49:15,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:49:15,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:49:15,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:15,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:15,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878296271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:15,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [360938616] [2022-11-22 01:49:15,860 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:15,860 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:15,860 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:15,860 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:15,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:15,917 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:16,085 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5899#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:16,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:16,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:16,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-22 01:49:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157121958] [2022-11-22 01:49:16,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:16,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 01:49:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 01:49:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-22 01:49:16,088 INFO L87 Difference]: Start difference. First operand 456 states and 539 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 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) [2022-11-22 01:49:16,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:16,321 INFO L93 Difference]: Finished difference Result 1648 states and 2019 transitions. [2022-11-22 01:49:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 01:49:16,322 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 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 42 [2022-11-22 01:49:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:16,327 INFO L225 Difference]: With dead ends: 1648 [2022-11-22 01:49:16,328 INFO L226 Difference]: Without dead ends: 1647 [2022-11-22 01:49:16,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-22 01:49:16,330 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 100 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:16,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 77 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:49:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2022-11-22 01:49:16,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 902. [2022-11-22 01:49:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 899 states have (on average 1.1802002224694104) internal successors, (1061), 901 states have internal predecessors, (1061), 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) [2022-11-22 01:49:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1061 transitions. [2022-11-22 01:49:16,379 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1061 transitions. Word has length 42 [2022-11-22 01:49:16,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:16,379 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1061 transitions. [2022-11-22 01:49:16,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 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) [2022-11-22 01:49:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1061 transitions. [2022-11-22 01:49:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 01:49:16,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:16,381 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1] [2022-11-22 01:49:16,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:16,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:16,586 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:16,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:16,587 INFO L85 PathProgramCache]: Analyzing trace with hash 84797903, now seen corresponding path program 3 times [2022-11-22 01:49:16,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:16,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455432116] [2022-11-22 01:49:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:16,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:16,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:16,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455432116] [2022-11-22 01:49:16,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455432116] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:16,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137360783] [2022-11-22 01:49:16,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:49:16,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:16,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:16,804 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:16,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:49:16,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:49:16,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:49:16,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:49:16,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:16,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:17,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137360783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:17,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [133000150] [2022-11-22 01:49:17,264 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:17,264 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:17,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:17,265 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:17,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:17,352 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:17,653 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9211#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:17,653 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:17,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:17,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-22 01:49:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452769207] [2022-11-22 01:49:17,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:49:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:49:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:49:17,655 INFO L87 Difference]: Start difference. First operand 902 states and 1061 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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) [2022-11-22 01:49:18,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:18,027 INFO L93 Difference]: Finished difference Result 4198 states and 5263 transitions. [2022-11-22 01:49:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:49:18,027 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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 65 [2022-11-22 01:49:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:18,040 INFO L225 Difference]: With dead ends: 4198 [2022-11-22 01:49:18,040 INFO L226 Difference]: Without dead ends: 4196 [2022-11-22 01:49:18,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:49:18,043 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 157 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:18,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 120 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:49:18,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2022-11-22 01:49:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 1944. [2022-11-22 01:49:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1941 states have (on average 1.1597114889232354) internal successors, (2251), 1943 states have internal predecessors, (2251), 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) [2022-11-22 01:49:18,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2251 transitions. [2022-11-22 01:49:18,165 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2251 transitions. Word has length 65 [2022-11-22 01:49:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:18,165 INFO L495 AbstractCegarLoop]: Abstraction has 1944 states and 2251 transitions. [2022-11-22 01:49:18,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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) [2022-11-22 01:49:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2251 transitions. [2022-11-22 01:49:18,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-22 01:49:18,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:18,167 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1] [2022-11-22 01:49:18,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:18,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 01:49:18,373 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:18,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:18,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1620549370, now seen corresponding path program 3 times [2022-11-22 01:49:18,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:18,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739411257] [2022-11-22 01:49:18,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:18,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:18,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:18,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739411257] [2022-11-22 01:49:18,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739411257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:18,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148288527] [2022-11-22 01:49:18,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:49:18,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:18,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:18,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:18,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 01:49:18,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:49:18,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:49:18,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 01:49:18,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:18,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:19,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148288527] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:19,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [159230904] [2022-11-22 01:49:19,500 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:19,500 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:19,501 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:19,501 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:19,501 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:19,549 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:19,766 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16750#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:19,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:19,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:19,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-11-22 01:49:19,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322836287] [2022-11-22 01:49:19,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:19,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-22 01:49:19,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-22 01:49:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=522, Invalid=960, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 01:49:19,769 INFO L87 Difference]: Start difference. First operand 1944 states and 2251 transitions. Second operand has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 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) [2022-11-22 01:49:20,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:20,505 INFO L93 Difference]: Finished difference Result 9842 states and 11725 transitions. [2022-11-22 01:49:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 01:49:20,505 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 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 90 [2022-11-22 01:49:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:20,531 INFO L225 Difference]: With dead ends: 9842 [2022-11-22 01:49:20,531 INFO L226 Difference]: Without dead ends: 9841 [2022-11-22 01:49:20,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=522, Invalid=960, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 01:49:20,537 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 222 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:20,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 157 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:49:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2022-11-22 01:49:20,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 3730. [2022-11-22 01:49:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3727 states have (on average 1.1540112691172524) internal successors, (4301), 3729 states have internal predecessors, (4301), 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) [2022-11-22 01:49:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4301 transitions. [2022-11-22 01:49:20,871 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4301 transitions. Word has length 90 [2022-11-22 01:49:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:20,871 INFO L495 AbstractCegarLoop]: Abstraction has 3730 states and 4301 transitions. [2022-11-22 01:49:20,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 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) [2022-11-22 01:49:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4301 transitions. [2022-11-22 01:49:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 01:49:20,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:20,875 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1] [2022-11-22 01:49:20,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:21,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 01:49:21,081 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:21,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:21,081 INFO L85 PathProgramCache]: Analyzing trace with hash 65778939, now seen corresponding path program 4 times [2022-11-22 01:49:21,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:21,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847268628] [2022-11-22 01:49:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:21,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:21,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:21,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847268628] [2022-11-22 01:49:21,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847268628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:21,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625823138] [2022-11-22 01:49:21,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:49:21,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:21,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:21,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:21,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 01:49:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:21,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:49:21,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:22,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:23,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625823138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1005255703] [2022-11-22 01:49:23,137 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:23,137 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:23,137 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:23,138 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:23,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:23,233 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:23,618 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32978#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:23,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:23,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:23,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-22 01:49:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053852772] [2022-11-22 01:49:23,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:23,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 01:49:23,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:23,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 01:49:23,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 01:49:23,622 INFO L87 Difference]: Start difference. First operand 3730 states and 4301 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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) [2022-11-22 01:49:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:25,100 INFO L93 Difference]: Finished difference Result 26438 states and 31923 transitions. [2022-11-22 01:49:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 01:49:25,100 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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 137 [2022-11-22 01:49:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:25,179 INFO L225 Difference]: With dead ends: 26438 [2022-11-22 01:49:25,179 INFO L226 Difference]: Without dead ends: 26436 [2022-11-22 01:49:25,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 01:49:25,192 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 470 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:25,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 240 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:49:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26436 states. [2022-11-22 01:49:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26436 to 7992. [2022-11-22 01:49:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7992 states, 7989 states have (on average 1.142946551508324) internal successors, (9131), 7991 states have internal predecessors, (9131), 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) [2022-11-22 01:49:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7992 states to 7992 states and 9131 transitions. [2022-11-22 01:49:25,946 INFO L78 Accepts]: Start accepts. Automaton has 7992 states and 9131 transitions. Word has length 137 [2022-11-22 01:49:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:25,946 INFO L495 AbstractCegarLoop]: Abstraction has 7992 states and 9131 transitions. [2022-11-22 01:49:25,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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) [2022-11-22 01:49:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 7992 states and 9131 transitions. [2022-11-22 01:49:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-22 01:49:25,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:25,955 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 1, 1, 1] [2022-11-22 01:49:25,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:26,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:26,161 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:26,161 INFO L85 PathProgramCache]: Analyzing trace with hash 780697546, now seen corresponding path program 4 times [2022-11-22 01:49:26,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:26,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782146379] [2022-11-22 01:49:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:27,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:27,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782146379] [2022-11-22 01:49:27,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782146379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:27,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504238743] [2022-11-22 01:49:27,689 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:49:27,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:27,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:27,690 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:27,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 01:49:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:27,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-22 01:49:27,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:28,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:29,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504238743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1044243764] [2022-11-22 01:49:29,800 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:29,801 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:29,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:29,801 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:29,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:29,868 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:30,131 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '73075#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:30,131 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:30,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:30,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2022-11-22 01:49:30,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558613564] [2022-11-22 01:49:30,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:30,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-22 01:49:30,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:30,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-22 01:49:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2042, Invalid=2928, Unknown=0, NotChecked=0, Total=4970 [2022-11-22 01:49:30,137 INFO L87 Difference]: Start difference. First operand 7992 states and 9131 transitions. Second operand has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 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) [2022-11-22 01:49:33,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:33,679 INFO L93 Difference]: Finished difference Result 65014 states and 75717 transitions. [2022-11-22 01:49:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-22 01:49:33,680 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 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 186 [2022-11-22 01:49:33,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:33,810 INFO L225 Difference]: With dead ends: 65014 [2022-11-22 01:49:33,810 INFO L226 Difference]: Without dead ends: 65013 [2022-11-22 01:49:33,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2042, Invalid=2928, Unknown=0, NotChecked=0, Total=4970 [2022-11-22 01:49:33,828 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 592 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:33,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 317 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:49:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65013 states. [2022-11-22 01:49:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65013 to 15146. [2022-11-22 01:49:35,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15146 states, 15143 states have (on average 1.139866605032028) internal successors, (17261), 15145 states have internal predecessors, (17261), 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) [2022-11-22 01:49:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15146 states to 15146 states and 17261 transitions. [2022-11-22 01:49:35,912 INFO L78 Accepts]: Start accepts. Automaton has 15146 states and 17261 transitions. Word has length 186 [2022-11-22 01:49:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:35,913 INFO L495 AbstractCegarLoop]: Abstraction has 15146 states and 17261 transitions. [2022-11-22 01:49:35,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 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) [2022-11-22 01:49:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 15146 states and 17261 transitions. [2022-11-22 01:49:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-22 01:49:35,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:35,925 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1] [2022-11-22 01:49:35,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-22 01:49:36,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 01:49:36,131 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash 465397587, now seen corresponding path program 5 times [2022-11-22 01:49:36,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:36,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055376117] [2022-11-22 01:49:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:36,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:38,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:38,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055376117] [2022-11-22 01:49:38,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055376117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:38,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277333805] [2022-11-22 01:49:38,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:49:38,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:38,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:38,640 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:38,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 01:49:38,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-22 01:49:38,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:49:38,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 01:49:38,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:39,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:42,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277333805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:42,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [255283949] [2022-11-22 01:49:42,604 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:49:42,605 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:42,605 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:42,605 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:42,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:42,699 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:49:43,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '165331#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:49:43,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:49:43,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:49:43,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-22 01:49:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123700263] [2022-11-22 01:49:43,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:49:43,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-22 01:49:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:43,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-22 01:49:43,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2022-11-22 01:49:43,160 INFO L87 Difference]: Start difference. First operand 15146 states and 17261 transitions. Second operand has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 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) [2022-11-22 01:49:52,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:52,597 INFO L93 Difference]: Finished difference Result 182334 states and 213859 transitions. [2022-11-22 01:49:52,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-22 01:49:52,598 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 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 281 [2022-11-22 01:49:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:53,095 INFO L225 Difference]: With dead ends: 182334 [2022-11-22 01:49:53,095 INFO L226 Difference]: Without dead ends: 182332 [2022-11-22 01:49:53,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2022-11-22 01:49:53,143 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 886 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:53,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 480 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:49:53,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182332 states. [2022-11-22 01:49:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182332 to 32376. [2022-11-22 01:49:57,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32376 states, 32373 states have (on average 1.134124115775492) internal successors, (36715), 32375 states have internal predecessors, (36715), 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) [2022-11-22 01:49:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32376 states to 32376 states and 36715 transitions. [2022-11-22 01:49:57,568 INFO L78 Accepts]: Start accepts. Automaton has 32376 states and 36715 transitions. Word has length 281 [2022-11-22 01:49:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:57,569 INFO L495 AbstractCegarLoop]: Abstraction has 32376 states and 36715 transitions. [2022-11-22 01:49:57,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 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) [2022-11-22 01:49:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 32376 states and 36715 transitions. [2022-11-22 01:49:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-22 01:49:57,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:57,597 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 1, 1, 1] [2022-11-22 01:49:57,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:57,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 01:49:57,808 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:57,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1450770794, now seen corresponding path program 5 times [2022-11-22 01:49:57,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:57,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064522887] [2022-11-22 01:49:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:57,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:50:02,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:02,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064522887] [2022-11-22 01:50:02,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064522887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:50:02,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870960195] [2022-11-22 01:50:02,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:50:02,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:02,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:02,158 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:02,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a3bd020-62c7-4e69-916d-e14ff661ee99/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 01:50:02,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-11-22 01:50:02,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:50:02,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-22 01:50:02,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:50:03,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:50:08,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870960195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:08,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [878044351] [2022-11-22 01:50:08,635 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:50:08,635 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:50:08,636 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:50:08,636 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:50:08,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:50:08,695 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:50:09,070 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '409912#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:50:09,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:50:09,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:50:09,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2022-11-22 01:50:09,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382613390] [2022-11-22 01:50:09,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:50:09,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-11-22 01:50:09,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-11-22 01:50:09,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8154, Invalid=9936, Unknown=0, NotChecked=0, Total=18090 [2022-11-22 01:50:09,080 INFO L87 Difference]: Start difference. First operand 32376 states and 36715 transitions. Second operand has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 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) [2022-11-22 01:50:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:38,842 INFO L93 Difference]: Finished difference Result 464894 states and 533221 transitions. [2022-11-22 01:50:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-22 01:50:38,843 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 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 378 [2022-11-22 01:50:38,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:39,641 INFO L225 Difference]: With dead ends: 464894 [2022-11-22 01:50:39,641 INFO L226 Difference]: Without dead ends: 464893 [2022-11-22 01:50:39,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1063 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=8154, Invalid=9936, Unknown=0, NotChecked=0, Total=18090 [2022-11-22 01:50:39,765 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1528 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2814 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:39,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 637 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2814 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 01:50:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464893 states.