./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs --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 aa1583b531c18e8d25726690525e5ca2db800c1fca35b7cfde3a7fa11382718a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:02:59,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:02:59,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:02:59,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:02:59,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:02:59,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:02:59,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:02:59,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:02:59,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:02:59,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:02:59,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:02:59,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:02:59,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:02:59,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:02:59,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:02:59,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:02:59,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:02:59,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:02:59,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:02:59,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:02:59,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:02:59,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:02:59,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:02:59,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:02:59,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:02:59,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:02:59,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:02:59,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:02:59,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:02:59,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:02:59,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:02:59,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:02:59,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:02:59,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:02:59,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:02:59,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:02:59,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:02:59,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:02:59,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:02:59,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:02:59,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:02:59,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-19 14:02:59,953 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:02:59,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:02:59,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:02:59,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:02:59,956 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:02:59,956 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:02:59,957 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:02:59,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:02:59,957 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:02:59,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:02:59,959 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:02:59,959 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:02:59,960 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:02:59,960 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:02:59,960 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:02:59,961 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:02:59,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:02:59,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:02:59,962 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:02:59,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:02:59,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:02:59,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:02:59,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:02:59,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:02:59,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:02:59,965 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 14:02:59,965 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:02:59,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:02:59,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:02:59,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:02:59,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:02:59,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:02:59,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:02:59,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:02:59,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:02:59,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:02:59,970 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:02:59,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:02:59,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:02:59,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:02:59,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:02:59,971 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa1583b531c18e8d25726690525e5ca2db800c1fca35b7cfde3a7fa11382718a [2021-11-19 14:03:00,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:03:00,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:03:00,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:03:00,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:03:00,353 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:03:00,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i [2021-11-19 14:03:00,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/data/ea27bdb71/a37183f5e8454637b069b2450bd04b56/FLAG7199efe3c [2021-11-19 14:03:00,940 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:03:00,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i [2021-11-19 14:03:00,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/data/ea27bdb71/a37183f5e8454637b069b2450bd04b56/FLAG7199efe3c [2021-11-19 14:03:01,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/data/ea27bdb71/a37183f5e8454637b069b2450bd04b56 [2021-11-19 14:03:01,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:03:01,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:03:01,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:03:01,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:03:01,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:03:01,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34418db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01, skipping insertion in model container [2021-11-19 14:03:01,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:03:01,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:03:01,516 WARN L230 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_a9147cbb-563c-43f4-87e2-76cbc4815a13/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i[873,886] [2021-11-19 14:03:01,541 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:03:01,552 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:03:01,564 WARN L230 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_a9147cbb-563c-43f4-87e2-76cbc4815a13/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i[873,886] [2021-11-19 14:03:01,567 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:03:01,581 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:03:01,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01 WrapperNode [2021-11-19 14:03:01,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:03:01,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:03:01,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:03:01,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:03:01,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,618 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2021-11-19 14:03:01,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:03:01,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:03:01,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:03:01,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:03:01,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:03:01,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:03:01,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:03:01,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:03:01,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (1/1) ... [2021-11-19 14:03:01,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:03:01,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:01,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:03:01,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:03:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:03:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:03:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:03:01,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:03:01,830 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:03:01,832 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:03:01,951 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:03:01,975 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:03:01,981 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:03:01,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:03:01 BoogieIcfgContainer [2021-11-19 14:03:01,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:03:01,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:03:01,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:03:01,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:03:01,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:03:01" (1/3) ... [2021-11-19 14:03:01,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eea646b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:03:01, skipping insertion in model container [2021-11-19 14:03:01,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:01" (2/3) ... [2021-11-19 14:03:01,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eea646b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:03:01, skipping insertion in model container [2021-11-19 14:03:01,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:03:01" (3/3) ... [2021-11-19 14:03:01,997 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark36_conjunctive.i [2021-11-19 14:03:02,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:03:02,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-19 14:03:02,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:03:02,091 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:03:02,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 14:03:02,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-11-19 14:03:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:03:02,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:02,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:03:02,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:02,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:02,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-11-19 14:03:02,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:02,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545897725] [2021-11-19 14:03:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:02,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:02,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:02,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545897725] [2021-11-19 14:03:02,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545897725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:02,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:02,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:03:02,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448365318] [2021-11-19 14:03:02,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:02,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:03:02,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:02,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:03:02,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:03:02,385 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-11-19 14:03:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:02,518 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-19 14:03:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:03:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2021-11-19 14:03:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:02,538 INFO L225 Difference]: With dead ends: 20 [2021-11-19 14:03:02,554 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 14:03:02,557 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:03:02,562 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:02,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 14:03:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-11-19 14:03:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 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) [2021-11-19 14:03:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-19 14:03:02,628 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-11-19 14:03:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:02,629 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-19 14:03:02,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-11-19 14:03:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-19 14:03:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:03:02,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:02,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:03:02,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:03:02,631 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:02,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-11-19 14:03:02,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:02,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076671799] [2021-11-19 14:03:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:02,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:02,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:02,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076671799] [2021-11-19 14:03:02,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076671799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:02,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:02,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:03:02,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629197039] [2021-11-19 14:03:02,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:02,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:03:02,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:03:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:03:02,701 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:02,729 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-11-19 14:03:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:03:02,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 14:03:02,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:02,730 INFO L225 Difference]: With dead ends: 13 [2021-11-19 14:03:02,731 INFO L226 Difference]: Without dead ends: 12 [2021-11-19 14:03:02,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:03:02,734 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:02,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:03:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-19 14:03:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-19 14:03:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-19 14:03:02,741 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-11-19 14:03:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:02,741 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-19 14:03:02,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-19 14:03:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 14:03:02,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:02,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 14:03:02,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:03:02,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:02,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-11-19 14:03:02,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:02,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239434090] [2021-11-19 14:03:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:02,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:02,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:02,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239434090] [2021-11-19 14:03:02,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239434090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:02,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:02,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:03:02,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068045593] [2021-11-19 14:03:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:02,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:03:02,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:03:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:03:02,797 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-19 14:03:02,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:02,829 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-11-19 14:03:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:03:02,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2021-11-19 14:03:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:02,831 INFO L225 Difference]: With dead ends: 17 [2021-11-19 14:03:02,831 INFO L226 Difference]: Without dead ends: 16 [2021-11-19 14:03:02,832 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:03:02,834 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:02,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:03:02,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-19 14:03:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-11-19 14:03:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-11-19 14:03:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-19 14:03:02,841 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2021-11-19 14:03:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:02,842 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-19 14:03:02,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-19 14:03:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-19 14:03:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 14:03:02,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:02,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:02,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 14:03:02,844 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:02,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:02,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-11-19 14:03:02,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:02,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006373350] [2021-11-19 14:03:02,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:02,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:02,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:02,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006373350] [2021-11-19 14:03:02,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006373350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:02,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:02,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:03:02,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526758759] [2021-11-19 14:03:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:02,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:03:02,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:02,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:03:02,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:03:02,918 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:02,947 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-11-19 14:03:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:03:02,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 14:03:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:02,949 INFO L225 Difference]: With dead ends: 14 [2021-11-19 14:03:02,949 INFO L226 Difference]: Without dead ends: 13 [2021-11-19 14:03:02,949 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:03:02,951 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:02,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:03:02,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-19 14:03:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-19 14:03:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 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) [2021-11-19 14:03:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-19 14:03:02,957 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-11-19 14:03:02,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:02,958 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-19 14:03:02,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-19 14:03:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 14:03:02,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:02,959 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:02,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 14:03:02,960 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:02,961 INFO L85 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2021-11-19 14:03:02,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:02,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375624139] [2021-11-19 14:03:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:02,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:03,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:03,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375624139] [2021-11-19 14:03:03,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375624139] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:03,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646925054] [2021-11-19 14:03:03,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:03,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:03,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:03,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:03,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 14:03:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:03,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:03:03,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:03,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:03,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646925054] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:03,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2056800430] [2021-11-19 14:03:03,274 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:03,274 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:03,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:03,285 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:03,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:03,346 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:03,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:03,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:03,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-19 14:03:03,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:03,422 INFO L185 QuantifierPusher]: treesize reduction 14, result has 81.8 percent of original size 63 [2021-11-19 14:03:03,427 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.9 percent of original size [2021-11-19 14:03:03,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:03,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,628 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-11-19 14:03:03,676 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.8 percent of original size 147 [2021-11-19 14:03:03,688 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-11-19 14:03:03,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-19 14:03:03,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:03,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-19 14:03:03,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,835 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:03,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:03,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:03,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:03,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:03,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:03,880 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:03,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:03,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:03,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:03,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:03,955 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:04,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:04,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:04,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-19 14:03:04,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014840650] [2021-11-19 14:03:04,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:04,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:03:04,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:03:04,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:03:04,394 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:04,516 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-19 14:03:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:03:04,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 14:03:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:04,517 INFO L225 Difference]: With dead ends: 30 [2021-11-19 14:03:04,518 INFO L226 Difference]: Without dead ends: 29 [2021-11-19 14:03:04,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:03:04,520 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:04,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 35 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:04,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-19 14:03:04,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-11-19 14:03:04,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 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) [2021-11-19 14:03:04,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-11-19 14:03:04,528 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 9 [2021-11-19 14:03:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:04,528 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-11-19 14:03:04,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-11-19 14:03:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:03:04,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:04,530 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-19 14:03:04,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:04,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:04,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:04,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1065881398, now seen corresponding path program 1 times [2021-11-19 14:03:04,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:04,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380682640] [2021-11-19 14:03:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:04,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:04,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:04,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380682640] [2021-11-19 14:03:04,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380682640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:04,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512752706] [2021-11-19 14:03:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:04,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:04,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:04,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:04,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 14:03:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:04,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:03:04,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:04,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:04,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512752706] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:04,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [12792770] [2021-11-19 14:03:05,000 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:05,001 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:05,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:05,002 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:05,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:05,020 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:05,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:05,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:05,041 INFO L185 QuantifierPusher]: treesize reduction 8, result has 89.5 percent of original size 68 [2021-11-19 14:03:05,046 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.1 percent of original size [2021-11-19 14:03:05,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-19 14:03:05,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:05,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:05,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,114 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-11-19 14:03:05,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-11-19 14:03:05,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:05,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-19 14:03:05,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:05,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-19 14:03:05,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,230 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:05,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:05,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:05,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:05,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:05,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:05,260 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:05,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:05,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:05,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:05,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:05,309 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:05,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:05,711 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:05,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-19 14:03:05,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190445052] [2021-11-19 14:03:05,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:05,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:03:05,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:05,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:03:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:03:05,714 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2021-11-19 14:03:05,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:05,803 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-19 14:03:05,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:03:05,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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 [2021-11-19 14:03:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:05,805 INFO L225 Difference]: With dead ends: 30 [2021-11-19 14:03:05,805 INFO L226 Difference]: Without dead ends: 29 [2021-11-19 14:03:05,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:03:05,807 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:05,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:03:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-19 14:03:05,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-11-19 14:03:05,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 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) [2021-11-19 14:03:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-11-19 14:03:05,813 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 11 [2021-11-19 14:03:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:05,814 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-11-19 14:03:05,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2021-11-19 14:03:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-11-19 14:03:05,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 14:03:05,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:05,816 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1] [2021-11-19 14:03:05,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:06,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:06,031 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:06,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:06,031 INFO L85 PathProgramCache]: Analyzing trace with hash 291495106, now seen corresponding path program 2 times [2021-11-19 14:03:06,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:06,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234999782] [2021-11-19 14:03:06,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:06,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:06,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:06,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234999782] [2021-11-19 14:03:06,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234999782] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:06,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221801972] [2021-11-19 14:03:06,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:03:06,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:06,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:06,210 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:06,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 14:03:06,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:03:06,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:03:06,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:03:06,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:06,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:06,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221801972] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:06,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1490421593] [2021-11-19 14:03:06,609 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:06,610 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:06,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:06,611 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:06,611 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:06,628 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:06,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:06,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:06,648 INFO L185 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-11-19 14:03:06,652 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size [2021-11-19 14:03:06,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-19 14:03:06,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:06,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:03:06,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,697 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-19 14:03:06,718 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.9 percent of original size 141 [2021-11-19 14:03:06,726 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.3 percent of original size [2021-11-19 14:03:06,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-19 14:03:06,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:06,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-19 14:03:06,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,779 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:06,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:06,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:06,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:06,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:06,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:06,796 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:06,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:06,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:06,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:06,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:06,829 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:07,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:07,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:07,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-11-19 14:03:07,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407607361] [2021-11-19 14:03:07,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:07,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 14:03:07,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 14:03:07,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:03:07,227 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 22 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) [2021-11-19 14:03:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:07,470 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-11-19 14:03:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:03:07,471 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 22 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) Word has length 24 [2021-11-19 14:03:07,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:07,473 INFO L225 Difference]: With dead ends: 63 [2021-11-19 14:03:07,473 INFO L226 Difference]: Without dead ends: 62 [2021-11-19 14:03:07,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=324, Invalid=1158, Unknown=0, NotChecked=0, Total=1482 [2021-11-19 14:03:07,475 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 67 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:07,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 45 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-19 14:03:07,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-11-19 14:03:07,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 55 states have internal predecessors, (61), 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) [2021-11-19 14:03:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-11-19 14:03:07,492 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 24 [2021-11-19 14:03:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:07,493 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-11-19 14:03:07,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 22 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) [2021-11-19 14:03:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-11-19 14:03:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 14:03:07,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:07,495 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2021-11-19 14:03:07,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-19 14:03:07,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-19 14:03:07,711 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash 953924228, now seen corresponding path program 2 times [2021-11-19 14:03:07,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:07,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120387] [2021-11-19 14:03:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:07,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:07,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:07,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120387] [2021-11-19 14:03:07,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120387] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:07,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177491895] [2021-11-19 14:03:07,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:03:07,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:07,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:07,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:07,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 14:03:07,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:03:07,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:03:07,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:03:07,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:07,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:08,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177491895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:08,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1388533172] [2021-11-19 14:03:08,205 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:08,206 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:08,206 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:08,206 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:08,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:08,214 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:08,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:08,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:08,224 INFO L185 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-11-19 14:03:08,226 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size [2021-11-19 14:03:08,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-19 14:03:08,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:08,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:03:08,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,264 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-19 14:03:08,277 INFO L185 QuantifierPusher]: treesize reduction 6, result has 96.0 percent of original size 143 [2021-11-19 14:03:08,283 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.3 percent of original size [2021-11-19 14:03:08,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-19 14:03:08,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:08,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-19 14:03:08,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,321 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:08,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:08,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:08,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:08,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:08,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:08,335 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:08,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:08,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:08,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:08,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:08,361 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:08,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:08,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:08,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-11-19 14:03:08,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921398620] [2021-11-19 14:03:08,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:08,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 14:03:08,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 14:03:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:03:08,767 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 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) [2021-11-19 14:03:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:09,019 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-11-19 14:03:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:03:09,021 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 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 26 [2021-11-19 14:03:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:09,022 INFO L225 Difference]: With dead ends: 60 [2021-11-19 14:03:09,022 INFO L226 Difference]: Without dead ends: 59 [2021-11-19 14:03:09,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2021-11-19 14:03:09,024 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 61 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:09,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 36 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-19 14:03:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-11-19 14:03:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 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) [2021-11-19 14:03:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-11-19 14:03:09,033 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 26 [2021-11-19 14:03:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:09,034 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-11-19 14:03:09,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 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) [2021-11-19 14:03:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-11-19 14:03:09,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 14:03:09,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:09,036 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1] [2021-11-19 14:03:09,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:09,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-19 14:03:09,252 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:09,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:09,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1862645118, now seen corresponding path program 3 times [2021-11-19 14:03:09,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:09,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424351187] [2021-11-19 14:03:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:09,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:09,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:09,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424351187] [2021-11-19 14:03:09,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424351187] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:09,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898893390] [2021-11-19 14:03:09,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:03:09,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:09,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:09,566 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:09,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 14:03:09,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:03:09,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:03:09,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 14:03:09,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:09,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:10,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898893390] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:10,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671796025] [2021-11-19 14:03:10,568 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:10,568 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:10,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:10,568 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:10,569 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:10,577 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:10,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:10,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:10,587 INFO L185 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-11-19 14:03:10,590 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size [2021-11-19 14:03:10,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-19 14:03:10,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:10,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-19 14:03:10,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,626 INFO L180 QuantifierPusher]: treesize reduction 11, result has 93.9 percent of original size [2021-11-19 14:03:10,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-19 14:03:10,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:10,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-11-19 14:03:10,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:10,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-11-19 14:03:10,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,686 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:10,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:10,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:10,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:10,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:10,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:10,700 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:10,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:10,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:10,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:10,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:10,730 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:11,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:11,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:11,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-11-19 14:03:11,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223687384] [2021-11-19 14:03:11,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:11,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-19 14:03:11,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-19 14:03:11,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=2187, Unknown=0, NotChecked=0, Total=2756 [2021-11-19 14:03:11,170 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 46 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 46 states have internal predecessors, (107), 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) [2021-11-19 14:03:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:11,824 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-11-19 14:03:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-19 14:03:11,825 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 46 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-19 14:03:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:11,827 INFO L225 Difference]: With dead ends: 129 [2021-11-19 14:03:11,827 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 14:03:11,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1350, Invalid=4200, Unknown=0, NotChecked=0, Total=5550 [2021-11-19 14:03:11,831 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 213 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:11,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 88 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 14:03:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2021-11-19 14:03:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 115 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) [2021-11-19 14:03:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2021-11-19 14:03:11,853 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 54 [2021-11-19 14:03:11,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:11,856 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2021-11-19 14:03:11,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 46 states have internal predecessors, (107), 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) [2021-11-19 14:03:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2021-11-19 14:03:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 14:03:11,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:11,860 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2021-11-19 14:03:11,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:12,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:12,079 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:12,079 INFO L85 PathProgramCache]: Analyzing trace with hash 999405636, now seen corresponding path program 3 times [2021-11-19 14:03:12,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:12,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203306035] [2021-11-19 14:03:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:12,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:12,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:12,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203306035] [2021-11-19 14:03:12,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203306035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:12,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705671201] [2021-11-19 14:03:12,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:03:12,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:12,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:12,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 14:03:12,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:03:12,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:03:12,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:03:12,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:12,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:13,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705671201] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:13,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [791896944] [2021-11-19 14:03:13,342 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:13,343 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:13,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:13,343 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:13,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:13,350 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:13,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:13,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:13,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-19 14:03:13,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:13,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-19 14:03:13,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:13,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:13,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,392 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.1 percent of original size [2021-11-19 14:03:13,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-11-19 14:03:13,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:13,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-19 14:03:13,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:13,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-19 14:03:13,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,445 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:13,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:13,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:13,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:13,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:13,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:13,458 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:13,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:13,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:13,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:13,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:13,485 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:13,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:13,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:13,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-11-19 14:03:13,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548136045] [2021-11-19 14:03:13,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:13,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-19 14:03:13,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:13,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-19 14:03:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=2186, Unknown=0, NotChecked=0, Total=2756 [2021-11-19 14:03:13,933 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 46 states have internal predecessors, (111), 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) [2021-11-19 14:03:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:14,557 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-11-19 14:03:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-19 14:03:14,558 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 46 states have internal predecessors, (111), 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 56 [2021-11-19 14:03:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:14,559 INFO L225 Difference]: With dead ends: 120 [2021-11-19 14:03:14,559 INFO L226 Difference]: Without dead ends: 119 [2021-11-19 14:03:14,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1341 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1352, Invalid=4198, Unknown=0, NotChecked=0, Total=5550 [2021-11-19 14:03:14,563 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 116 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:14,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 88 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:14,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-19 14:03:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-11-19 14:03:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 117 states have internal predecessors, (118), 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) [2021-11-19 14:03:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2021-11-19 14:03:14,586 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 56 [2021-11-19 14:03:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:14,588 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2021-11-19 14:03:14,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 46 states have internal predecessors, (111), 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) [2021-11-19 14:03:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2021-11-19 14:03:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:03:14,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:14,592 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1] [2021-11-19 14:03:14,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:14,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-11-19 14:03:14,793 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:14,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:14,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1927842302, now seen corresponding path program 4 times [2021-11-19 14:03:14,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:14,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893938458] [2021-11-19 14:03:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:14,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:15,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:15,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893938458] [2021-11-19 14:03:15,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893938458] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:15,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554580303] [2021-11-19 14:03:15,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 14:03:15,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:15,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:15,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:15,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 14:03:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:16,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-19 14:03:16,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:16,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:18,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554580303] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:18,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [645314839] [2021-11-19 14:03:18,705 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:18,705 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:18,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:18,706 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:18,706 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:18,714 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:18,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:18,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:18,724 INFO L185 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-11-19 14:03:18,727 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size [2021-11-19 14:03:18,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-19 14:03:18,731 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:18,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:03:18,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,754 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-19 14:03:18,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-19 14:03:18,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:18,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-19 14:03:18,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:18,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-19 14:03:18,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,810 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:18,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:18,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:18,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:18,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:18,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:18,831 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:18,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:18,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:18,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:18,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:18,867 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:19,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:19,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:19,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-11-19 14:03:19,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287772940] [2021-11-19 14:03:19,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:19,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-19 14:03:19,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:19,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-19 14:03:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2273, Invalid=7827, Unknown=0, NotChecked=0, Total=10100 [2021-11-19 14:03:19,401 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand has 94 states, 93 states have (on average 2.4408602150537635) internal successors, (227), 94 states have internal predecessors, (227), 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) [2021-11-19 14:03:21,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:21,065 INFO L93 Difference]: Finished difference Result 261 states and 284 transitions. [2021-11-19 14:03:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-19 14:03:21,065 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4408602150537635) internal successors, (227), 94 states have internal predecessors, (227), 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 114 [2021-11-19 14:03:21,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:21,067 INFO L225 Difference]: With dead ends: 261 [2021-11-19 14:03:21,067 INFO L226 Difference]: Without dead ends: 260 [2021-11-19 14:03:21,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5040 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5562, Invalid=15900, Unknown=0, NotChecked=0, Total=21462 [2021-11-19 14:03:21,075 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 494 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:21,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 135 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:03:21,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-19 14:03:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 236. [2021-11-19 14:03:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 234 states have (on average 1.106837606837607) internal successors, (259), 235 states have internal predecessors, (259), 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) [2021-11-19 14:03:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 259 transitions. [2021-11-19 14:03:21,092 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 259 transitions. Word has length 114 [2021-11-19 14:03:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:21,093 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 259 transitions. [2021-11-19 14:03:21,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4408602150537635) internal successors, (227), 94 states have internal predecessors, (227), 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) [2021-11-19 14:03:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 259 transitions. [2021-11-19 14:03:21,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 14:03:21,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:21,096 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1] [2021-11-19 14:03:21,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:21,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:21,311 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1525546044, now seen corresponding path program 4 times [2021-11-19 14:03:21,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:21,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744653940] [2021-11-19 14:03:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:21,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:22,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:22,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744653940] [2021-11-19 14:03:22,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744653940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:22,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881438162] [2021-11-19 14:03:22,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 14:03:22,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:22,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:22,171 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:22,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 14:03:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:22,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-19 14:03:22,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:22,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:24,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881438162] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:24,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1160349820] [2021-11-19 14:03:24,417 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:24,417 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:24,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:24,418 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:24,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:24,429 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:24,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:24,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:24,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-19 14:03:24,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:24,444 INFO L185 QuantifierPusher]: treesize reduction 8, result has 87.3 percent of original size 55 [2021-11-19 14:03:24,455 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-19 14:03:24,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:03:24,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,486 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-19 14:03:24,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-19 14:03:24,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:24,500 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-19 14:03:24,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:24,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-19 14:03:24,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,532 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:24,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:24,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:24,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:24,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:24,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:24,547 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:24,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:24,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:24,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:24,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:24,578 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:25,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:25,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:25,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-11-19 14:03:25,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211369467] [2021-11-19 14:03:25,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:25,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-19 14:03:25,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:25,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-19 14:03:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2274, Invalid=7826, Unknown=0, NotChecked=0, Total=10100 [2021-11-19 14:03:25,041 INFO L87 Difference]: Start difference. First operand 236 states and 259 transitions. Second operand has 94 states, 93 states have (on average 2.4838709677419355) internal successors, (231), 94 states have internal predecessors, (231), 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) [2021-11-19 14:03:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:26,700 INFO L93 Difference]: Finished difference Result 240 states and 263 transitions. [2021-11-19 14:03:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-19 14:03:26,701 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4838709677419355) internal successors, (231), 94 states have internal predecessors, (231), 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 116 [2021-11-19 14:03:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:26,703 INFO L225 Difference]: With dead ends: 240 [2021-11-19 14:03:26,704 INFO L226 Difference]: Without dead ends: 239 [2021-11-19 14:03:26,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5037 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5564, Invalid=15898, Unknown=0, NotChecked=0, Total=21462 [2021-11-19 14:03:26,708 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 326 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:26,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 130 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:03:26,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-19 14:03:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-19 14:03:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 236 states have (on average 1.0084745762711864) internal successors, (238), 237 states have internal predecessors, (238), 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) [2021-11-19 14:03:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2021-11-19 14:03:26,722 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 116 [2021-11-19 14:03:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:26,722 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2021-11-19 14:03:26,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4838709677419355) internal successors, (231), 94 states have internal predecessors, (231), 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) [2021-11-19 14:03:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2021-11-19 14:03:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-19 14:03:26,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:26,729 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1] [2021-11-19 14:03:26,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:26,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2021-11-19 14:03:26,954 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:26,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:26,955 INFO L85 PathProgramCache]: Analyzing trace with hash 33754370, now seen corresponding path program 5 times [2021-11-19 14:03:26,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:26,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127416662] [2021-11-19 14:03:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:26,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:29,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:29,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127416662] [2021-11-19 14:03:29,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127416662] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:29,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411480797] [2021-11-19 14:03:29,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:03:29,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:29,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:29,782 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:29,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 14:03:30,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-19 14:03:30,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:03:30,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-19 14:03:30,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:30,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:37,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411480797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:37,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [456250014] [2021-11-19 14:03:37,416 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:37,416 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:37,416 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:37,416 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:37,416 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:37,423 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:37,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:37,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:37,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-19 14:03:37,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:37,439 INFO L185 QuantifierPusher]: treesize reduction 8, result has 87.3 percent of original size 55 [2021-11-19 14:03:37,441 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-19 14:03:37,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:03:37,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,479 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-19 14:03:37,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-19 14:03:37,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:37,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-19 14:03:37,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:37,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-19 14:03:37,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,522 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:37,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:37,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:37,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:37,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:37,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:37,533 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:37,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:37,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:37,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:37,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:37,587 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:38,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:38,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:38,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-11-19 14:03:38,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138789252] [2021-11-19 14:03:38,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:38,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-19 14:03:38,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:38,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-19 14:03:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9137, Invalid=29475, Unknown=0, NotChecked=0, Total=38612 [2021-11-19 14:03:38,286 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand has 190 states, 189 states have (on average 2.4708994708994707) internal successors, (467), 190 states have internal predecessors, (467), 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) [2021-11-19 14:03:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:44,267 INFO L93 Difference]: Finished difference Result 525 states and 572 transitions. [2021-11-19 14:03:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-11-19 14:03:44,268 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 2.4708994708994707) internal successors, (467), 190 states have internal predecessors, (467), 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 234 [2021-11-19 14:03:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:44,271 INFO L225 Difference]: With dead ends: 525 [2021-11-19 14:03:44,271 INFO L226 Difference]: Without dead ends: 524 [2021-11-19 14:03:44,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19344 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=22626, Invalid=61764, Unknown=0, NotChecked=0, Total=84390 [2021-11-19 14:03:44,280 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1028 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:44,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 275 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:03:44,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-19 14:03:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 476. [2021-11-19 14:03:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 474 states have (on average 1.1033755274261603) internal successors, (523), 475 states have internal predecessors, (523), 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) [2021-11-19 14:03:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 523 transitions. [2021-11-19 14:03:44,299 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 523 transitions. Word has length 234 [2021-11-19 14:03:44,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:44,300 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 523 transitions. [2021-11-19 14:03:44,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 2.4708994708994707) internal successors, (467), 190 states have internal predecessors, (467), 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) [2021-11-19 14:03:44,301 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 523 transitions. [2021-11-19 14:03:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-19 14:03:44,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:44,307 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1] [2021-11-19 14:03:44,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:44,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-11-19 14:03:44,515 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:03:44,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:44,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1921787196, now seen corresponding path program 5 times [2021-11-19 14:03:44,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:44,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386371015] [2021-11-19 14:03:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:44,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:47,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:47,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386371015] [2021-11-19 14:03:47,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386371015] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:47,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166315135] [2021-11-19 14:03:47,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:03:47,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:47,457 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:47,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 14:03:47,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-19 14:03:47,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:03:47,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-19 14:03:47,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:48,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:54,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166315135] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:54,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [592219100] [2021-11-19 14:03:54,895 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:03:54,896 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:03:54,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:03:54,896 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:03:54,896 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:03:54,906 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:03:54,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:03:54,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:54,916 INFO L185 QuantifierPusher]: treesize reduction 8, result has 89.5 percent of original size 68 [2021-11-19 14:03:54,918 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.1 percent of original size [2021-11-19 14:03:54,919 INFO L185 QuantifierPusher]: treesize reduction 8, result has 87.3 percent of original size 55 [2021-11-19 14:03:54,920 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-19 14:03:54,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:03:54,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:54,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:54,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:54,975 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-19 14:03:54,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-19 14:03:54,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:54,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-19 14:03:54,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:54,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-19 14:03:55,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,023 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:55,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:55,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:55,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:55,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:55,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:03:55,034 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:03:55,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:55,041 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:03:55,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:03:55,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:03:55,058 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:03:55,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:03:55,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:03:55,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-11-19 14:03:55,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029914166] [2021-11-19 14:03:55,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:55,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-19 14:03:55,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:55,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-19 14:03:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9138, Invalid=29474, Unknown=0, NotChecked=0, Total=38612 [2021-11-19 14:03:55,710 INFO L87 Difference]: Start difference. First operand 476 states and 523 transitions. Second operand has 190 states, 189 states have (on average 2.492063492063492) internal successors, (471), 190 states have internal predecessors, (471), 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) [2021-11-19 14:04:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:01,939 INFO L93 Difference]: Finished difference Result 480 states and 527 transitions. [2021-11-19 14:04:01,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-11-19 14:04:01,940 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 2.492063492063492) internal successors, (471), 190 states have internal predecessors, (471), 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 236 [2021-11-19 14:04:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:01,942 INFO L225 Difference]: With dead ends: 480 [2021-11-19 14:04:01,943 INFO L226 Difference]: Without dead ends: 479 [2021-11-19 14:04:01,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19341 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=22628, Invalid=61762, Unknown=0, NotChecked=0, Total=84390 [2021-11-19 14:04:01,949 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 893 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:01,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 218 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:04:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-11-19 14:04:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 478. [2021-11-19 14:04:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 476 states have (on average 1.004201680672269) internal successors, (478), 477 states have internal predecessors, (478), 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) [2021-11-19 14:04:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2021-11-19 14:04:01,968 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 236 [2021-11-19 14:04:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:01,969 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2021-11-19 14:04:01,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 2.492063492063492) internal successors, (471), 190 states have internal predecessors, (471), 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) [2021-11-19 14:04:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2021-11-19 14:04:01,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-11-19 14:04:01,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:01,982 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1] [2021-11-19 14:04:02,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:02,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:04:02,199 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:04:02,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:02,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1625343230, now seen corresponding path program 6 times [2021-11-19 14:04:02,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:02,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771209706] [2021-11-19 14:04:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:02,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:13,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:13,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771209706] [2021-11-19 14:04:13,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771209706] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:04:13,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039126991] [2021-11-19 14:04:13,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:04:13,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:04:13,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:04:13,183 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:04:13,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 14:04:13,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:04:13,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:04:13,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-19 14:04:13,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:14,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:40,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039126991] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:04:40,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [353784529] [2021-11-19 14:04:40,862 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:04:40,862 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:04:40,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:04:40,862 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:04:40,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:04:40,886 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:04:40,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:04:40,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:04:40,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-19 14:04:40,895 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:04:40,897 INFO L185 QuantifierPusher]: treesize reduction 8, result has 87.3 percent of original size 55 [2021-11-19 14:04:40,900 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-19 14:04:40,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:04:40,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,926 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-19 14:04:40,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-11-19 14:04:40,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:04:40,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-19 14:04:40,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:04:40,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-19 14:04:40,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:40,981 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:04:40,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:04:40,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:04:40,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:04:40,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:04:40,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:04:40,996 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:04:40,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:04:41,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:04:41,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:04:41,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:41,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:41,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:41,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:04:41,017 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:04:42,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:04:42,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:04:42,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2021-11-19 14:04:42,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999499622] [2021-11-19 14:04:42,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:04:42,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-19 14:04:42,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-19 14:04:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36689, Invalid=114243, Unknown=0, NotChecked=0, Total=150932 [2021-11-19 14:04:42,216 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand has 382 states, 381 states have (on average 2.4855643044619424) internal successors, (947), 382 states have internal predecessors, (947), 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) [2021-11-19 14:05:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:10,862 INFO L93 Difference]: Finished difference Result 1053 states and 1148 transitions. [2021-11-19 14:05:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2021-11-19 14:05:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 2.4855643044619424) internal successors, (947), 382 states have internal predecessors, (947), 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 474 [2021-11-19 14:05:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:10,870 INFO L225 Difference]: With dead ends: 1053 [2021-11-19 14:05:10,871 INFO L226 Difference]: Without dead ends: 1052 [2021-11-19 14:05:10,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1801 GetRequests, 1224 SyntacticMatches, 0 SemanticMatches, 577 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75600 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=91314, Invalid=243348, Unknown=0, NotChecked=0, Total=334662 [2021-11-19 14:05:10,891 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 2452 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:10,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2452 Valid, 519 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:05:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-11-19 14:05:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 956. [2021-11-19 14:05:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 954 states have (on average 1.10167714884696) internal successors, (1051), 955 states have internal predecessors, (1051), 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) [2021-11-19 14:05:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1051 transitions. [2021-11-19 14:05:10,927 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1051 transitions. Word has length 474 [2021-11-19 14:05:10,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:10,929 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1051 transitions. [2021-11-19 14:05:10,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 2.4855643044619424) internal successors, (947), 382 states have internal predecessors, (947), 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) [2021-11-19 14:05:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1051 transitions. [2021-11-19 14:05:10,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-19 14:05:10,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:10,943 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1] [2021-11-19 14:05:10,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:11,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:05:11,158 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:05:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1413253316, now seen corresponding path program 6 times [2021-11-19 14:05:11,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:11,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967473006] [2021-11-19 14:05:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:11,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:22,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:22,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967473006] [2021-11-19 14:05:22,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967473006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:05:22,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646929267] [2021-11-19 14:05:22,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:05:22,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:05:22,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:05:22,615 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:05:22,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 14:05:22,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:05:22,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:05:22,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-19 14:05:22,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:24,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:52,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646929267] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:05:52,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1517393663] [2021-11-19 14:05:52,413 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:05:52,413 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:05:52,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:05:52,414 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:05:52,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:05:52,430 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:05:52,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:05:52,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:52,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-11-19 14:05:52,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:52,441 INFO L185 QuantifierPusher]: treesize reduction 8, result has 87.3 percent of original size 55 [2021-11-19 14:05:52,442 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.0 percent of original size [2021-11-19 14:05:52,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:05:52,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,464 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-19 14:05:52,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-19 14:05:52,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:52,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-19 14:05:52,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:52,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-19 14:05:52,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,510 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:05:52,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:05:52,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:52,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:05:52,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:52,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:05:52,522 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:05:52,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:05:52,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:52,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:05:52,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:05:52,544 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:05:53,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:05:53,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:05:53,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2021-11-19 14:05:53,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943888288] [2021-11-19 14:05:53,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:05:53,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-19 14:05:53,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-19 14:05:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36690, Invalid=114242, Unknown=0, NotChecked=0, Total=150932 [2021-11-19 14:05:53,674 INFO L87 Difference]: Start difference. First operand 956 states and 1051 transitions. Second operand has 382 states, 381 states have (on average 2.4960629921259843) internal successors, (951), 382 states have internal predecessors, (951), 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) [2021-11-19 14:06:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:24,734 INFO L93 Difference]: Finished difference Result 960 states and 1055 transitions. [2021-11-19 14:06:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2021-11-19 14:06:24,737 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 2.4960629921259843) internal successors, (951), 382 states have internal predecessors, (951), 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 476 [2021-11-19 14:06:24,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:24,744 INFO L225 Difference]: With dead ends: 960 [2021-11-19 14:06:24,744 INFO L226 Difference]: Without dead ends: 959 [2021-11-19 14:06:24,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1807 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 577 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75597 ImplicationChecksByTransitivity, 57.8s TimeCoverageRelationStatistics Valid=91316, Invalid=243346, Unknown=0, NotChecked=0, Total=334662 [2021-11-19 14:06:24,770 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1822 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:24,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1822 Valid, 442 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:06:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-19 14:06:24,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 958. [2021-11-19 14:06:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 956 states have (on average 1.002092050209205) internal successors, (958), 957 states have internal predecessors, (958), 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) [2021-11-19 14:06:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 958 transitions. [2021-11-19 14:06:24,805 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 958 transitions. Word has length 476 [2021-11-19 14:06:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:24,806 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 958 transitions. [2021-11-19 14:06:24,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 2.4960629921259843) internal successors, (951), 382 states have internal predecessors, (951), 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) [2021-11-19 14:06:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 958 transitions. [2021-11-19 14:06:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2021-11-19 14:06:24,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:24,819 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 1, 1, 1] [2021-11-19 14:06:24,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:06:25,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-11-19 14:06:25,030 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:06:25,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:25,031 INFO L85 PathProgramCache]: Analyzing trace with hash 711694082, now seen corresponding path program 7 times [2021-11-19 14:06:25,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:25,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86416347] [2021-11-19 14:06:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:25,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:09,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:09,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86416347] [2021-11-19 14:07:09,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86416347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:07:09,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443313700] [2021-11-19 14:07:09,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 14:07:09,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:07:09,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:07:09,605 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:07:09,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-19 14:07:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:10,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-19 14:07:10,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:07:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:12,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:09:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:09:00,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443313700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:09:00,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1802157239] [2021-11-19 14:09:00,713 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-19 14:09:00,714 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:09:00,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:09:00,714 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:09:00,715 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:09:00,721 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-11-19 14:09:00,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-11-19 14:09:00,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:09:00,728 INFO L185 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-11-19 14:09:00,730 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size [2021-11-19 14:09:00,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-19 14:09:00,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:09:00,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-19 14:09:00,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,766 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-11-19 14:09:00,777 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.9 percent of original size 141 [2021-11-19 14:09:00,781 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.3 percent of original size [2021-11-19 14:09:00,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-19 14:09:00,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:09:00,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-19 14:09:00,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,816 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:09:00,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:09:00,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:09:00,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:09:00,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:09:00,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-19 14:09:00,829 INFO L180 QuantifierPusher]: treesize reduction 17, result has 64.6 percent of original size [2021-11-19 14:09:00,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:09:00,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:09:00,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 14:09:00,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:09:00,851 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:09:02,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:09:02,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:09:02,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 765 [2021-11-19 14:09:02,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220502475] [2021-11-19 14:09:02,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:09:02,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-11-19 14:09:02,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:09:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-11-19 14:09:02,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147089, Invalid=449667, Unknown=0, NotChecked=0, Total=596756 [2021-11-19 14:09:02,877 INFO L87 Difference]: Start difference. First operand 958 states and 958 transitions. Second operand has 766 states, 765 states have (on average 2.49281045751634) internal successors, (1907), 766 states have internal predecessors, (1907), 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) [2021-11-19 14:13:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:13:07,491 INFO L93 Difference]: Finished difference Result 2109 states and 2300 transitions. [2021-11-19 14:13:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 767 states. [2021-11-19 14:13:07,493 INFO L78 Accepts]: Start accepts. Automaton has has 766 states, 765 states have (on average 2.49281045751634) internal successors, (1907), 766 states have internal predecessors, (1907), 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 954 [2021-11-19 14:13:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:13:07,509 INFO L225 Difference]: With dead ends: 2109 [2021-11-19 14:13:07,509 INFO L226 Difference]: Without dead ends: 2108 [2021-11-19 14:13:07,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3625 GetRequests, 2472 SyntacticMatches, 0 SemanticMatches, 1153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298704 ImplicationChecksByTransitivity, 227.4s TimeCoverageRelationStatistics Valid=366930, Invalid=965940, Unknown=0, NotChecked=0, Total=1332870 [2021-11-19 14:13:07,610 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 7165 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7165 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:13:07,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7165 Valid, 1017 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:13:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-11-19 14:13:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1916. [2021-11-19 14:13:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1914 states have (on average 1.100835945663532) internal successors, (2107), 1915 states have internal predecessors, (2107), 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) [2021-11-19 14:13:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2107 transitions. [2021-11-19 14:13:07,677 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2107 transitions. Word has length 954 [2021-11-19 14:13:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:13:07,679 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 2107 transitions. [2021-11-19 14:13:07,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 766 states, 765 states have (on average 2.49281045751634) internal successors, (1907), 766 states have internal predecessors, (1907), 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) [2021-11-19 14:13:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2107 transitions. [2021-11-19 14:13:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2021-11-19 14:13:07,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:13:07,693 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1] [2021-11-19 14:13:07,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:13:07,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:13:07,906 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:13:07,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:13:07,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1038214340, now seen corresponding path program 7 times [2021-11-19 14:13:07,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:13:07,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409122875] [2021-11-19 14:13:07,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:13:07,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:13:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:13:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:13:53,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:13:53,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409122875] [2021-11-19 14:13:53,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409122875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:13:53,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351290457] [2021-11-19 14:13:53,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 14:13:53,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:13:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:13:53,250 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:13:53,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9147cbb-563c-43f4-87e2-76cbc4815a13/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 14:13:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:13:53,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 383 conjunts are in the unsatisfiable core [2021-11-19 14:13:53,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:13:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:13:56,110 INFO L328 TraceCheckSpWp]: Computing backward predicates...