./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0 --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 32bit --witnessprinter.graph.data.programhash 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 --- 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-e04fb08 [2022-11-16 15:58:09,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:58:09,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:58:09,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:58:09,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:58:09,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:58:09,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:58:09,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:58:09,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:58:09,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:58:09,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:58:09,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:58:09,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:58:09,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:58:09,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:58:09,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:58:09,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:58:09,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:58:09,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:58:09,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:58:09,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:58:09,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:58:09,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:58:09,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:58:09,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:58:09,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:58:09,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:58:09,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:58:09,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:58:09,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:58:09,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:58:09,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:58:09,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:58:09,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:58:09,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:58:09,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:58:09,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:58:09,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:58:09,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:58:09,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:58:09,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:58:09,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-16 15:58:09,184 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:58:09,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:58:09,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:58:09,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:58:09,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:58:09,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:58:09,186 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:58:09,186 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:58:09,186 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:58:09,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:58:09,186 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:58:09,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:58:09,187 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:58:09,187 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:58:09,187 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:58:09,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:58:09,188 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:58:09,188 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:58:09,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:58:09,189 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 15:58:09,189 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 15:58:09,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:58:09,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 15:58:09,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:58:09,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:58:09,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:58:09,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:58:09,190 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 15:58:09,191 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 15:58:09,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:58:09,191 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:58:09,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:58:09,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:58:09,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:58:09,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:58:09,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:58:09,192 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:58:09,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:58:09,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:58:09,193 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:58:09,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:58:09,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:58:09,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:58:09,194 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_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 [2022-11-16 15:58:09,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:58:09,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:58:09,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:58:09,456 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:58:09,457 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:58:09,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2022-11-16 15:58:09,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/data/c90673067/ea859541337e46a0aacec3aa409054b4/FLAG6e6e53e80 [2022-11-16 15:58:10,302 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:58:10,303 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2022-11-16 15:58:10,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/data/c90673067/ea859541337e46a0aacec3aa409054b4/FLAG6e6e53e80 [2022-11-16 15:58:10,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/data/c90673067/ea859541337e46a0aacec3aa409054b4 [2022-11-16 15:58:10,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:58:10,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:58:10,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:58:10,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:58:10,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:58:10,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:58:10" (1/1) ... [2022-11-16 15:58:10,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21204c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:10, skipping insertion in model container [2022-11-16 15:58:10,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:58:10" (1/1) ... [2022-11-16 15:58:10,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:58:10,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:58:11,109 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2022-11-16 15:58:11,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:58:11,362 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:58:11,385 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2022-11-16 15:58:11,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:58:11,548 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:58:11,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11 WrapperNode [2022-11-16 15:58:11,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:58:11,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:58:11,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:58:11,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:58:11,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,730 INFO L138 Inliner]: procedures = 177, calls = 524, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2171 [2022-11-16 15:58:11,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:58:11,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:58:11,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:58:11,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:58:11,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,903 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:58:11,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:58:11,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:58:11,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:58:11,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (1/1) ... [2022-11-16 15:58:11,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:58:11,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:58:11,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:58:12,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:58:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2022-11-16 15:58:12,035 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2022-11-16 15:58:12,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 15:58:12,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 15:58:12,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 15:58:12,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 15:58:12,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 15:58:12,041 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 15:58:12,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 15:58:12,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:58:12,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 15:58:12,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 15:58:12,042 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 15:58:12,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 15:58:12,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 15:58:12,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:58:12,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:58:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:58:12,385 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:58:12,388 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:58:16,181 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:58:16,956 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:58:16,957 INFO L300 CfgBuilder]: Removed 151 assume(true) statements. [2022-11-16 15:58:16,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:58:16 BoogieIcfgContainer [2022-11-16 15:58:16,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:58:16,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:58:16,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:58:16,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:58:16,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:58:10" (1/3) ... [2022-11-16 15:58:16,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452cced1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:58:16, skipping insertion in model container [2022-11-16 15:58:16,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:58:11" (2/3) ... [2022-11-16 15:58:16,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452cced1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:58:16, skipping insertion in model container [2022-11-16 15:58:16,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:58:16" (3/3) ... [2022-11-16 15:58:16,971 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-1.i [2022-11-16 15:58:16,999 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:58:16,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 15:58:17,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:58:17,068 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;@381291e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:58:17,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 15:58:17,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 235 states have (on average 1.8340425531914895) internal successors, (431), 245 states have internal predecessors, (431), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 15:58:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 15:58:17,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:58:17,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 15:58:17,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [test_int_intErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, test_int_intErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 15:58:17,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:58:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash 55907443, now seen corresponding path program 1 times [2022-11-16 15:58:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:58:17,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568246415] [2022-11-16 15:58:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:58:17,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:58:17,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746847913] [2022-11-16 15:58:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:17,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:58:17,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:58:17,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:58:17,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 15:58:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:58:17,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 15:58:17,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:58:17,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 15:58:17,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:58:17,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 15:58:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:58:17,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:58:17,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:58:17,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568246415] [2022-11-16 15:58:17,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:58:17,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746847913] [2022-11-16 15:58:17,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746847913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:58:17,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:58:17,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 15:58:17,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088600255] [2022-11-16 15:58:17,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:58:17,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:58:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:58:17,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:58:17,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 15:58:17,804 INFO L87 Difference]: Start difference. First operand has 259 states, 235 states have (on average 1.8340425531914895) internal successors, (431), 245 states have internal predecessors, (431), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-16 15:58:20,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 15:58:22,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 15:58:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:58:23,050 INFO L93 Difference]: Finished difference Result 547 states and 974 transitions. [2022-11-16 15:58:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 15:58:23,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-16 15:58:23,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:58:23,064 INFO L225 Difference]: With dead ends: 547 [2022-11-16 15:58:23,064 INFO L226 Difference]: Without dead ends: 287 [2022-11-16 15:58:23,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:58:23,071 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 29 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:58:23,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 781 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 15:58:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-16 15:58:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2022-11-16 15:58:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 238 states have (on average 1.218487394957983) internal successors, (290), 248 states have internal predecessors, (290), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 15:58:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 317 transitions. [2022-11-16 15:58:23,192 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 317 transitions. Word has length 4 [2022-11-16 15:58:23,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:58:23,192 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 317 transitions. [2022-11-16 15:58:23,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-16 15:58:23,193 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 317 transitions. [2022-11-16 15:58:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 15:58:23,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:58:23,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:58:23,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 15:58:23,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:58:23,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting test_int_intErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [test_int_intErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, test_int_intErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 15:58:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:58:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash 365808677, now seen corresponding path program 1 times [2022-11-16 15:58:23,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:58:23,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274077273] [2022-11-16 15:58:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:23,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:58:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:58:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:58:23,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:58:23,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274077273] [2022-11-16 15:58:23,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274077273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:58:23,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:58:23,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 15:58:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318113802] [2022-11-16 15:58:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:58:23,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:58:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:58:23,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:58:23,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 15:58:23,864 INFO L87 Difference]: Start difference. First operand 261 states and 317 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:58:27,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 15:58:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:58:27,939 INFO L93 Difference]: Finished difference Result 410 states and 503 transitions. [2022-11-16 15:58:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 15:58:27,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 15:58:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:58:27,943 INFO L225 Difference]: With dead ends: 410 [2022-11-16 15:58:27,943 INFO L226 Difference]: Without dead ends: 261 [2022-11-16 15:58:27,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:58:27,946 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 2 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:58:27,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 791 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 15:58:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-16 15:58:27,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2022-11-16 15:58:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 238 states have (on average 1.2142857142857142) internal successors, (289), 248 states have internal predecessors, (289), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 15:58:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 316 transitions. [2022-11-16 15:58:27,969 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 316 transitions. Word has length 20 [2022-11-16 15:58:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:58:27,970 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 316 transitions. [2022-11-16 15:58:27,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:58:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 316 transitions. [2022-11-16 15:58:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 15:58:27,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:58:27,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:58:27,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 15:58:27,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [test_int_intErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, test_int_intErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 15:58:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:58:27,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2049155335, now seen corresponding path program 1 times [2022-11-16 15:58:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:58:27,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814419139] [2022-11-16 15:58:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:27,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:58:28,102 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:58:28,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168583468] [2022-11-16 15:58:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:28,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:58:28,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:58:28,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:58:28,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 15:58:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:58:28,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 15:58:28,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:58:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:58:29,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:58:29,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:58:29,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814419139] [2022-11-16 15:58:29,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:58:29,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168583468] [2022-11-16 15:58:29,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168583468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:58:29,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:58:29,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 15:58:29,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431408792] [2022-11-16 15:58:29,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:58:29,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:58:29,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:58:29,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:58:29,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:58:29,050 INFO L87 Difference]: Start difference. First operand 261 states and 316 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2022-11-16 15:58:30,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:58:30,934 INFO L93 Difference]: Finished difference Result 632 states and 764 transitions. [2022-11-16 15:58:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:58:30,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 [2022-11-16 15:58:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:58:30,937 INFO L225 Difference]: With dead ends: 632 [2022-11-16 15:58:30,937 INFO L226 Difference]: Without dead ends: 376 [2022-11-16 15:58:30,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:58:30,940 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 119 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:58:30,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 599 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 15:58:30,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-16 15:58:30,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2022-11-16 15:58:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 344 states have (on average 1.191860465116279) internal successors, (410), 354 states have internal predecessors, (410), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 15:58:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 447 transitions. [2022-11-16 15:58:30,971 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 447 transitions. Word has length 29 [2022-11-16 15:58:30,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:58:30,972 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 447 transitions. [2022-11-16 15:58:30,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2022-11-16 15:58:30,972 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 447 transitions. [2022-11-16 15:58:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 15:58:30,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:58:30,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:58:30,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 15:58:31,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:58:31,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [test_int_intErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, test_int_intErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 15:58:31,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:58:31,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2051730764, now seen corresponding path program 1 times [2022-11-16 15:58:31,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:58:31,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046266784] [2022-11-16 15:58:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:31,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:58:31,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:58:31,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985467828] [2022-11-16 15:58:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:31,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:58:31,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:58:31,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:58:31,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 15:58:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:58:31,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 15:58:31,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:58:31,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 15:58:32,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:58:32,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 15:58:32,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:58:32,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 15:58:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 15:58:32,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:58:32,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:58:32,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046266784] [2022-11-16 15:58:32,106 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:58:32,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985467828] [2022-11-16 15:58:32,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985467828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:58:32,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:58:32,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 15:58:32,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035690565] [2022-11-16 15:58:32,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:58:32,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:58:32,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:58:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:58:32,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:58:32,118 INFO L87 Difference]: Start difference. First operand 372 states and 447 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:58:37,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 15:58:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:58:37,987 INFO L93 Difference]: Finished difference Result 692 states and 833 transitions. [2022-11-16 15:58:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:58:37,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2022-11-16 15:58:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:58:37,990 INFO L225 Difference]: With dead ends: 692 [2022-11-16 15:58:37,990 INFO L226 Difference]: Without dead ends: 372 [2022-11-16 15:58:37,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:58:37,992 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 29 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:58:37,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 989 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-16 15:58:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-16 15:58:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2022-11-16 15:58:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 344 states have (on average 1.188953488372093) internal successors, (409), 354 states have internal predecessors, (409), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 15:58:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 446 transitions. [2022-11-16 15:58:38,019 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 446 transitions. Word has length 42 [2022-11-16 15:58:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:58:38,019 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 446 transitions. [2022-11-16 15:58:38,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:58:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 446 transitions. [2022-11-16 15:58:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 15:58:38,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:58:38,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:58:38,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 15:58:38,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:58:38,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [test_int_intErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, test_int_intErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 15:58:38,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:58:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash 449380669, now seen corresponding path program 1 times [2022-11-16 15:58:38,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:58:38,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908217641] [2022-11-16 15:58:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:38,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:58:38,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:58:38,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295127653] [2022-11-16 15:58:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:38,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:58:38,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:58:38,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:58:38,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 15:58:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:58:39,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 15:58:39,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:58:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 15:58:39,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:58:39,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:58:39,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908217641] [2022-11-16 15:58:39,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:58:39,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295127653] [2022-11-16 15:58:39,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295127653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:58:39,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:58:39,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 15:58:39,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908593333] [2022-11-16 15:58:39,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:58:39,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:58:39,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:58:39,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:58:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:58:39,684 INFO L87 Difference]: Start difference. First operand 372 states and 446 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:58:41,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 15:58:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:58:43,160 INFO L93 Difference]: Finished difference Result 838 states and 1006 transitions. [2022-11-16 15:58:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:58:43,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2022-11-16 15:58:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:58:43,164 INFO L225 Difference]: With dead ends: 838 [2022-11-16 15:58:43,164 INFO L226 Difference]: Without dead ends: 494 [2022-11-16 15:58:43,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:58:43,166 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 110 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 15:58:43,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 545 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 15:58:43,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-16 15:58:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 439. [2022-11-16 15:58:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 408 states have (on average 1.178921568627451) internal successors, (481), 418 states have internal predecessors, (481), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 15:58:43,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 524 transitions. [2022-11-16 15:58:43,197 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 524 transitions. Word has length 63 [2022-11-16 15:58:43,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:58:43,198 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 524 transitions. [2022-11-16 15:58:43,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 15:58:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 524 transitions. [2022-11-16 15:58:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 15:58:43,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:58:43,201 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:58:43,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 15:58:43,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:58:43,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [test_int_intErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, test_int_intErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 15:58:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:58:43,413 INFO L85 PathProgramCache]: Analyzing trace with hash 786794606, now seen corresponding path program 1 times [2022-11-16 15:58:43,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:58:43,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317557369] [2022-11-16 15:58:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:43,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:58:43,510 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:58:43,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391666912] [2022-11-16 15:58:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:58:43,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:58:43,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:58:43,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:58:43,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 15:59:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:59:05,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 15:59:05,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:59:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 15:59:05,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:59:05,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:59:05,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317557369] [2022-11-16 15:59:05,734 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:59:05,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391666912] [2022-11-16 15:59:05,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391666912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:59:05,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:59:05,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 15:59:05,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51700926] [2022-11-16 15:59:05,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:59:05,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:59:05,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:59:05,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:59:05,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 15:59:05,737 INFO L87 Difference]: Start difference. First operand 439 states and 524 transitions. Second operand has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 15:59:08,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:59:08,153 INFO L93 Difference]: Finished difference Result 858 states and 1035 transitions. [2022-11-16 15:59:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 15:59:08,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76 [2022-11-16 15:59:08,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:59:08,157 INFO L225 Difference]: With dead ends: 858 [2022-11-16 15:59:08,157 INFO L226 Difference]: Without dead ends: 441 [2022-11-16 15:59:08,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:59:08,161 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 15:59:08,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 839 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 15:59:08,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-16 15:59:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-11-16 15:59:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 409 states have (on average 1.1809290953545233) internal successors, (483), 420 states have internal predecessors, (483), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-16 15:59:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 529 transitions. [2022-11-16 15:59:08,200 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 529 transitions. Word has length 76 [2022-11-16 15:59:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:59:08,202 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 529 transitions. [2022-11-16 15:59:08,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 15:59:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 529 transitions. [2022-11-16 15:59:08,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 15:59:08,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:59:08,211 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:59:08,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 15:59:08,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:59:08,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [test_int_intErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, test_int_intErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 15:59:08,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:59:08,427 INFO L85 PathProgramCache]: Analyzing trace with hash 63244322, now seen corresponding path program 1 times [2022-11-16 15:59:08,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:59:08,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841752182] [2022-11-16 15:59:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:59:08,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:59:08,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:59:08,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371111273] [2022-11-16 15:59:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:59:08,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:59:08,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:59:08,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:59:08,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3055222c-8be5-49f9-b7e5-e0ef55e3ce06/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process