./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/aviad.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/aviad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:37:33,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:37:33,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:37:33,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:37:33,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:37:33,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:37:33,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:37:33,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:37:33,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:37:33,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:37:33,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:37:33,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:37:33,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:37:33,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:37:33,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:37:33,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:37:33,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:37:33,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:37:33,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:37:33,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:37:33,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:37:33,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:37:33,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:37:33,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:37:33,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:37:33,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:37:33,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:37:33,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:37:33,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:37:33,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:37:33,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:37:33,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:37:33,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:37:33,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:37:33,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:37:33,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:37:33,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:37:33,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:37:33,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:37:33,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:37:33,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:37:33,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-16 20:37:33,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:37:33,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:37:33,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:37:33,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:37:33,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:37:33,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:37:33,744 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:37:33,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:37:33,745 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:37:33,745 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:37:33,746 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:37:33,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:37:33,747 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:37:33,747 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:37:33,747 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:37:33,747 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:37:33,748 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:37:33,748 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:37:33,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:37:33,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 20:37:33,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:37:33,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:37:33,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:37:33,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:37:33,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:37:33,750 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 20:37:33,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:37:33,750 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:37:33,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:37:33,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:37:33,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:37:33,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:37:33,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:37:33,752 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:37:33,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:37:33,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:37:33,753 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:37:33,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:37:33,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:37:33,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:37:33,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 [2022-11-16 20:37:34,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:37:34,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:37:34,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:37:34,071 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:37:34,072 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:37:34,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/termination-crafted-lit/aviad.c [2022-11-16 20:37:34,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/data/fcaf6b7d9/ae667a0292b74b1a94c446e6c76021f9/FLAG2fda9967b [2022-11-16 20:37:34,680 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:37:34,681 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/sv-benchmarks/c/termination-crafted-lit/aviad.c [2022-11-16 20:37:34,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/data/fcaf6b7d9/ae667a0292b74b1a94c446e6c76021f9/FLAG2fda9967b [2022-11-16 20:37:35,028 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/data/fcaf6b7d9/ae667a0292b74b1a94c446e6c76021f9 [2022-11-16 20:37:35,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:37:35,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:37:35,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:37:35,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:37:35,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:37:35,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf08a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35, skipping insertion in model container [2022-11-16 20:37:35,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:37:35,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:37:35,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:37:35,319 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:37:35,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:37:35,363 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:37:35,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35 WrapperNode [2022-11-16 20:37:35,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:37:35,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:37:35,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:37:35,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:37:35,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,402 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2022-11-16 20:37:35,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:37:35,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:37:35,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:37:35,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:37:35,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:37:35,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:37:35,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:37:35,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:37:35,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (1/1) ... [2022-11-16 20:37:35,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:37:35,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:37:35,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:37:35,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:37:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:37:35,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:37:35,620 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:37:35,622 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:37:35,847 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:37:35,907 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:37:35,907 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:37:35,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:37:35 BoogieIcfgContainer [2022-11-16 20:37:35,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:37:35,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:37:35,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:37:35,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:37:35,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:37:35" (1/3) ... [2022-11-16 20:37:35,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd2eb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:37:35, skipping insertion in model container [2022-11-16 20:37:35,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:37:35" (2/3) ... [2022-11-16 20:37:35,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd2eb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:37:35, skipping insertion in model container [2022-11-16 20:37:35,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:37:35" (3/3) ... [2022-11-16 20:37:35,931 INFO L112 eAbstractionObserver]: Analyzing ICFG aviad.c [2022-11-16 20:37:35,956 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:37:35,956 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 20:37:36,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:37:36,068 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ae47353, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:37:36,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 20:37:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 20:37:36,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:36,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 20:37:36,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:37:36,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:36,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2185955, now seen corresponding path program 1 times [2022-11-16 20:37:36,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:36,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242365513] [2022-11-16 20:37:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:36,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:36,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:36,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242365513] [2022-11-16 20:37:36,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242365513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:37:36,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:37:36,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 20:37:36,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913115381] [2022-11-16 20:37:36,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:37:36,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:37:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:37:36,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:37:36,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:37:36,498 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:37:36,547 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-11-16 20:37:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:37:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 20:37:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:37:36,560 INFO L225 Difference]: With dead ends: 17 [2022-11-16 20:37:36,560 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 20:37:36,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:37:36,568 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:37:36,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:37:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 20:37:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-16 20:37:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-16 20:37:36,608 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2022-11-16 20:37:36,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:37:36,609 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-16 20:37:36,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-16 20:37:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 20:37:36,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:36,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 20:37:36,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:37:36,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:37:36,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash 67764659, now seen corresponding path program 1 times [2022-11-16 20:37:36,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:36,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864940966] [2022-11-16 20:37:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:36,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:36,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864940966] [2022-11-16 20:37:36,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864940966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:37:36,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:37:36,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:37:36,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050907503] [2022-11-16 20:37:36,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:37:36,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:37:36,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:37:36,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:37:36,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:37:36,675 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:37:36,711 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-16 20:37:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:37:36,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 20:37:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:37:36,713 INFO L225 Difference]: With dead ends: 14 [2022-11-16 20:37:36,713 INFO L226 Difference]: Without dead ends: 12 [2022-11-16 20:37:36,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:37:36,716 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 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 [2022-11-16 20:37:36,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:37:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-16 20:37:36,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-16 20:37:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-16 20:37:36,721 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2022-11-16 20:37:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:37:36,722 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-16 20:37:36,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-16 20:37:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 20:37:36,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:36,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:37:36,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:37:36,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:37:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:36,725 INFO L85 PathProgramCache]: Analyzing trace with hash 697329653, now seen corresponding path program 1 times [2022-11-16 20:37:36,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:36,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272184847] [2022-11-16 20:37:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:36,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:36,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272184847] [2022-11-16 20:37:36,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272184847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:37:36,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:37:36,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:37:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498732150] [2022-11-16 20:37:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:37:36,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:37:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:37:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:37:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:37:36,843 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:37:36,893 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-16 20:37:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:37:36,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 20:37:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:37:36,895 INFO L225 Difference]: With dead ends: 23 [2022-11-16 20:37:36,895 INFO L226 Difference]: Without dead ends: 22 [2022-11-16 20:37:36,896 INFO L412 NwaCegarLoop]: 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 [2022-11-16 20:37:36,898 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:37:36,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:37:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-16 20:37:36,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-16 20:37:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-16 20:37:36,905 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2022-11-16 20:37:36,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:37:36,905 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-16 20:37:36,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,906 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-16 20:37:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 20:37:36,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:36,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:37:36,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:37:36,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:37:36,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash 142382823, now seen corresponding path program 1 times [2022-11-16 20:37:36,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:36,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357472863] [2022-11-16 20:37:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:36,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:36,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357472863] [2022-11-16 20:37:36,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357472863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:37:36,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:37:36,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:37:36,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079873521] [2022-11-16 20:37:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:37:36,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:37:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:37:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:37:36,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:37:36,972 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:37:36,996 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-16 20:37:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:37:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 20:37:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:37:36,997 INFO L225 Difference]: With dead ends: 20 [2022-11-16 20:37:36,997 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 20:37:36,998 INFO L412 NwaCegarLoop]: 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 [2022-11-16 20:37:37,000 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:37:37,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:37:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 20:37:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 20:37:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-16 20:37:37,006 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2022-11-16 20:37:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:37:37,007 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-16 20:37:37,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-16 20:37:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 20:37:37,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:37,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-16 20:37:37,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:37:37,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:37:37,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:37,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1497150636, now seen corresponding path program 1 times [2022-11-16 20:37:37,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:37,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834888692] [2022-11-16 20:37:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:37,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:37,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:37,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834888692] [2022-11-16 20:37:37,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834888692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:37:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674725552] [2022-11-16 20:37:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:37,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:37:37,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:37:37,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:37:37,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:37:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:37,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 20:37:37,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:37:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:37,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:37:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:37,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674725552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:37:37,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [918047094] [2022-11-16 20:37:37,576 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 20:37:37,577 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:37:37,582 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:37:37,590 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:37:37,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:37:37,933 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:37:38,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [918047094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:37:38,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:37:38,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 14 [2022-11-16 20:37:38,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993846424] [2022-11-16 20:37:38,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:37:38,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:37:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:37:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:37:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-11-16 20:37:38,597 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:37:38,862 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-16 20:37:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 20:37:38,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 20:37:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:37:38,871 INFO L225 Difference]: With dead ends: 35 [2022-11-16 20:37:38,871 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 20:37:38,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-11-16 20:37:38,873 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:37:38,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:37:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 20:37:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2022-11-16 20:37:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-16 20:37:38,892 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-11-16 20:37:38,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:37:38,892 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-16 20:37:38,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:38,893 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-16 20:37:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 20:37:38,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:38,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:37:38,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 20:37:39,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:37:39,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:37:39,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1502876274, now seen corresponding path program 1 times [2022-11-16 20:37:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:39,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107653044] [2022-11-16 20:37:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:39,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:39,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:39,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107653044] [2022-11-16 20:37:39,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107653044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:37:39,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827438399] [2022-11-16 20:37:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:39,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:37:39,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:37:39,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:37:39,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 20:37:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:39,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 20:37:39,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:37:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:39,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:37:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:39,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827438399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:37:39,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1923945733] [2022-11-16 20:37:39,421 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 20:37:39,422 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:37:39,422 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:37:39,424 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:37:39,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:37:40,714 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:37:50,209 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '438#(and (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)) (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0) (exists ((|v_ULTIMATE.start_f_~a#1_34| Int)) (and (< 1 |v_ULTIMATE.start_f_~a#1_34|) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_34| 2) 1) (div |v_ULTIMATE.start_f_~a#1_34| 2)) 2147483648)) (= |ULTIMATE.start_f_~tmp~0#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_34| 2)) (mod |v_ULTIMATE.start_f_~a#1_34| 2))) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_34| 2) 1) (div |v_ULTIMATE.start_f_~a#1_34| 2)) |ULTIMATE.start_f_~a#1|) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_34| 2) 1) (div |v_ULTIMATE.start_f_~a#1_34| 2)) 2147483647))))))' at error location [2022-11-16 20:37:50,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:37:50,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:37:50,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-16 20:37:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185498878] [2022-11-16 20:37:50,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:37:50,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 20:37:50,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:37:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 20:37:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=307, Unknown=2, NotChecked=0, Total=380 [2022-11-16 20:37:50,213 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:37:50,335 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2022-11-16 20:37:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 20:37:50,336 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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) Word has length 14 [2022-11-16 20:37:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:37:50,337 INFO L225 Difference]: With dead ends: 79 [2022-11-16 20:37:50,337 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 20:37:50,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=106, Invalid=444, Unknown=2, NotChecked=0, Total=552 [2022-11-16 20:37:50,339 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:37:50,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 60 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:37:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 20:37:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2022-11-16 20:37:50,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2022-11-16 20:37:50,354 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 14 [2022-11-16 20:37:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:37:50,354 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2022-11-16 20:37:50,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:37:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2022-11-16 20:37:50,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 20:37:50,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:50,357 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-16 20:37:50,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 20:37:50,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 20:37:50,563 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:37:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2144510063, now seen corresponding path program 2 times [2022-11-16 20:37:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:50,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338164696] [2022-11-16 20:37:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:50,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:37:50,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338164696] [2022-11-16 20:37:50,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338164696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:37:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727738236] [2022-11-16 20:37:50,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:37:50,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:37:50,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:37:50,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:37:50,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 20:37:50,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 20:37:50,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:37:50,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 20:37:50,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:37:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 20:37:51,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:37:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 20:37:51,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727738236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:37:51,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [254720669] [2022-11-16 20:37:51,428 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 20:37:51,428 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:37:51,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:37:51,429 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:37:51,429 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:37:52,207 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:38:00,422 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '850#(and (<= |ULTIMATE.start_f_~a#1| 2147483647) (or (and (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (< 0 |ULTIMATE.start_f_~a#1|) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_49| Int)) (and (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_49| 2) 1) (div |v_ULTIMATE.start_f_~a#1_49| 2)) 2147483648)) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_49| 2) 1) (div |v_ULTIMATE.start_f_~a#1_49| 2)) 2147483647) (< 1 |v_ULTIMATE.start_f_~a#1_49|) (= |ULTIMATE.start_f_~a#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_49| 2) 1) (div |v_ULTIMATE.start_f_~a#1_49| 2))) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_49| 2)) (mod |v_ULTIMATE.start_f_~a#1_49| 2)) |ULTIMATE.start_f_~tmp~0#1|))) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647))' at error location [2022-11-16 20:38:00,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:38:00,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:38:00,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 21 [2022-11-16 20:38:00,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712654050] [2022-11-16 20:38:00,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:38:00,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 20:38:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:38:00,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 20:38:00,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-11-16 20:38:00,430 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:38:02,074 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2022-11-16 20:38:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 20:38:02,075 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 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 35 [2022-11-16 20:38:02,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:38:02,076 INFO L225 Difference]: With dead ends: 131 [2022-11-16 20:38:02,076 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 20:38:02,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=664, Invalid=4028, Unknown=0, NotChecked=0, Total=4692 [2022-11-16 20:38:02,081 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 192 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:38:02,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 22 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 20:38:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 20:38:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2022-11-16 20:38:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 81 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2022-11-16 20:38:02,096 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 35 [2022-11-16 20:38:02,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:38:02,097 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2022-11-16 20:38:02,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2022-11-16 20:38:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 20:38:02,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:38:02,099 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1] [2022-11-16 20:38:02,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:38:02,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:38:02,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:38:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:38:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1463774018, now seen corresponding path program 3 times [2022-11-16 20:38:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:38:02,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166167158] [2022-11-16 20:38:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:38:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:38:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:38:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:38:02,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:38:02,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166167158] [2022-11-16 20:38:02,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166167158] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:38:02,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043450635] [2022-11-16 20:38:02,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:38:02,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:38:02,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:38:02,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:38:02,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:38:02,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:38:02,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:38:02,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 20:38:02,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:38:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:38:02,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:38:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:38:03,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043450635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:38:03,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [972355302] [2022-11-16 20:38:03,244 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 20:38:03,244 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:38:03,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:38:03,244 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:38:03,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:38:04,021 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:38:13,275 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1458#(and (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (exists ((|v_ULTIMATE.start_f_~a#1_65| Int)) (and (<= 0 (+ (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (div |v_ULTIMATE.start_f_~a#1_65| 2) 1) (div |v_ULTIMATE.start_f_~a#1_65| 2)) 2147483648)) (<= (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (div |v_ULTIMATE.start_f_~a#1_65| 2) 1) (div |v_ULTIMATE.start_f_~a#1_65| 2)) 2147483647) (= (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (div |v_ULTIMATE.start_f_~a#1_65| 2) 1) (div |v_ULTIMATE.start_f_~a#1_65| 2)) |ULTIMATE.start_f_~a#1|) (< 1 |v_ULTIMATE.start_f_~a#1_65|) (= (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_65| 2)) (mod |v_ULTIMATE.start_f_~a#1_65| 2)) |ULTIMATE.start_f_~tmp~0#1|))) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)))' at error location [2022-11-16 20:38:13,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:38:13,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:38:13,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-16 20:38:13,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155961795] [2022-11-16 20:38:13,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:38:13,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 20:38:13,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:38:13,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 20:38:13,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1036, Unknown=1, NotChecked=0, Total=1260 [2022-11-16 20:38:13,280 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:38:13,645 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2022-11-16 20:38:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 20:38:13,646 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-16 20:38:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:38:13,648 INFO L225 Difference]: With dead ends: 183 [2022-11-16 20:38:13,648 INFO L226 Difference]: Without dead ends: 182 [2022-11-16 20:38:13,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=470, Invalid=1785, Unknown=1, NotChecked=0, Total=2256 [2022-11-16 20:38:13,650 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 258 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:38:13,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 122 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:38:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-16 20:38:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2022-11-16 20:38:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0837988826815643) internal successors, (194), 179 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:13,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 194 transitions. [2022-11-16 20:38:13,682 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 194 transitions. Word has length 42 [2022-11-16 20:38:13,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:38:13,683 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 194 transitions. [2022-11-16 20:38:13,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 194 transitions. [2022-11-16 20:38:13,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 20:38:13,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:38:13,690 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 7, 7, 7, 6, 6, 6, 1, 1] [2022-11-16 20:38:13,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 20:38:13,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:38:13,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:38:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:38:13,898 INFO L85 PathProgramCache]: Analyzing trace with hash 248445017, now seen corresponding path program 4 times [2022-11-16 20:38:13,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:38:13,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701007889] [2022-11-16 20:38:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:38:13,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:38:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:38:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:38:14,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:38:14,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701007889] [2022-11-16 20:38:14,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701007889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:38:14,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304478356] [2022-11-16 20:38:14,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 20:38:14,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:38:14,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:38:14,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:38:14,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 20:38:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:38:15,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 20:38:15,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:38:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:38:15,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:38:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:38:16,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304478356] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:38:16,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440887558] [2022-11-16 20:38:16,332 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 20:38:16,332 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:38:16,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:38:16,332 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:38:16,333 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:38:16,937 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:38:28,834 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2499#(and (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_88| Int)) (and (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_88| 2)) (mod |v_ULTIMATE.start_f_~a#1_88| 2)) |ULTIMATE.start_f_~tmp~0#1|) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_88| 2) 1) (div |v_ULTIMATE.start_f_~a#1_88| 2)) |ULTIMATE.start_f_~a#1|) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_88| 2) 1) (div |v_ULTIMATE.start_f_~a#1_88| 2)) 2147483647) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_88| 2) 1) (div |v_ULTIMATE.start_f_~a#1_88| 2)) 2147483648)) (< 1 |v_ULTIMATE.start_f_~a#1_88|))) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)))' at error location [2022-11-16 20:38:28,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:38:28,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:38:28,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2022-11-16 20:38:28,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322279928] [2022-11-16 20:38:28,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:38:28,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 20:38:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:38:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 20:38:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=3233, Unknown=2, NotChecked=0, Total=4032 [2022-11-16 20:38:28,840 INFO L87 Difference]: Start difference. First operand 180 states and 194 transitions. Second operand has 54 states, 53 states have (on average 3.4339622641509435) internal successors, (182), 53 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:29,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:38:29,934 INFO L93 Difference]: Finished difference Result 379 states and 434 transitions. [2022-11-16 20:38:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-16 20:38:29,935 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.4339622641509435) internal successors, (182), 53 states have internal predecessors, (182), 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 91 [2022-11-16 20:38:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:38:29,938 INFO L225 Difference]: With dead ends: 379 [2022-11-16 20:38:29,938 INFO L226 Difference]: Without dead ends: 378 [2022-11-16 20:38:29,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=1877, Invalid=6131, Unknown=2, NotChecked=0, Total=8010 [2022-11-16 20:38:29,942 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 595 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:38:29,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 223 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:38:29,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-16 20:38:29,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-11-16 20:38:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.0773333333333333) internal successors, (404), 375 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 404 transitions. [2022-11-16 20:38:29,993 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 404 transitions. Word has length 91 [2022-11-16 20:38:29,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:38:29,994 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 404 transitions. [2022-11-16 20:38:29,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.4339622641509435) internal successors, (182), 53 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 404 transitions. [2022-11-16 20:38:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-16 20:38:30,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:38:30,001 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 14, 14, 14, 13, 13, 13, 1, 1] [2022-11-16 20:38:30,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 20:38:30,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:38:30,208 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:38:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:38:30,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1803313251, now seen corresponding path program 5 times [2022-11-16 20:38:30,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:38:30,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993514558] [2022-11-16 20:38:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:38:30,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:38:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:38:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 0 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:38:34,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:38:34,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993514558] [2022-11-16 20:38:34,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993514558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:38:34,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417627489] [2022-11-16 20:38:34,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:38:34,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:38:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:38:34,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:38:34,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 20:38:34,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-11-16 20:38:34,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:38:34,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-16 20:38:34,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:38:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 0 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:38:34,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:38:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 0 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:38:38,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417627489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:38:38,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2142165670] [2022-11-16 20:38:38,512 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 20:38:38,513 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:38:38,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:38:38,513 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:38:38,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:38:39,186 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:38:49,582 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4660#(and (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_125| Int)) (and (= |ULTIMATE.start_f_~a#1| (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (div |v_ULTIMATE.start_f_~a#1_125| 2) 1) (div |v_ULTIMATE.start_f_~a#1_125| 2))) (= |ULTIMATE.start_f_~tmp~0#1| (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_125| 2)) (mod |v_ULTIMATE.start_f_~a#1_125| 2))) (<= (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (div |v_ULTIMATE.start_f_~a#1_125| 2) 1) (div |v_ULTIMATE.start_f_~a#1_125| 2)) 2147483647) (< 1 |v_ULTIMATE.start_f_~a#1_125|) (<= 0 (+ (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (div |v_ULTIMATE.start_f_~a#1_125| 2) 1) (div |v_ULTIMATE.start_f_~a#1_125| 2)) 2147483648)))) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)))' at error location [2022-11-16 20:38:49,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:38:49,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:38:49,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 108 [2022-11-16 20:38:49,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511748722] [2022-11-16 20:38:49,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:38:49,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-11-16 20:38:49,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:38:49,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-11-16 20:38:49,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3121, Invalid=11158, Unknown=1, NotChecked=0, Total=14280 [2022-11-16 20:38:49,590 INFO L87 Difference]: Start difference. First operand 376 states and 404 transitions. Second operand has 110 states, 109 states have (on average 3.467889908256881) internal successors, (378), 109 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:52,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:38:52,960 INFO L93 Difference]: Finished difference Result 771 states and 882 transitions. [2022-11-16 20:38:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-11-16 20:38:52,961 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 3.467889908256881) internal successors, (378), 109 states have internal predecessors, (378), 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 189 [2022-11-16 20:38:52,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:38:52,968 INFO L225 Difference]: With dead ends: 771 [2022-11-16 20:38:52,968 INFO L226 Difference]: Without dead ends: 770 [2022-11-16 20:38:52,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7599 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=7631, Invalid=22470, Unknown=1, NotChecked=0, Total=30102 [2022-11-16 20:38:52,978 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1530 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:38:52,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 418 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 20:38:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-16 20:38:53,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 768. [2022-11-16 20:38:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.074315514993481) internal successors, (824), 767 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 824 transitions. [2022-11-16 20:38:53,042 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 824 transitions. Word has length 189 [2022-11-16 20:38:53,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:38:53,045 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 824 transitions. [2022-11-16 20:38:53,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 3.467889908256881) internal successors, (378), 109 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:38:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 824 transitions. [2022-11-16 20:38:53,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-16 20:38:53,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:38:53,089 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 54, 54, 28, 28, 28, 27, 27, 27, 1, 1] [2022-11-16 20:38:53,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 20:38:53,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 20:38:53,290 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:38:53,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:38:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash -960210697, now seen corresponding path program 6 times [2022-11-16 20:38:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:38:53,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005700600] [2022-11-16 20:38:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:38:53,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:38:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:39:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8829 backedges. 0 proven. 8829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:39:05,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:39:05,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005700600] [2022-11-16 20:39:05,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005700600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:39:05,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032143391] [2022-11-16 20:39:05,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:39:05,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:39:05,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:39:05,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:39:05,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 20:39:05,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:39:05,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:39:05,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-16 20:39:05,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:39:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8829 backedges. 0 proven. 8829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:39:06,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:39:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8829 backedges. 0 proven. 8829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:39:19,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032143391] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:39:19,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1963793485] [2022-11-16 20:39:19,935 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 20:39:19,935 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:39:19,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:39:19,936 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:39:19,936 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:39:20,618 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:39:31,550 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9061#(and (or (and (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (< 0 |ULTIMATE.start_f_~a#1|) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_190| Int)) (and (< 1 |v_ULTIMATE.start_f_~a#1_190|) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_190| 2) 1) (div |v_ULTIMATE.start_f_~a#1_190| 2)) 2147483647) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_190| 2) 1) (div |v_ULTIMATE.start_f_~a#1_190| 2)) 2147483648)) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_190| 2) 1) (div |v_ULTIMATE.start_f_~a#1_190| 2)) |ULTIMATE.start_f_~a#1|) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_190| 2)) (mod |v_ULTIMATE.start_f_~a#1_190| 2)) |ULTIMATE.start_f_~tmp~0#1|))) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (<= |ULTIMATE.start_f_~a#1| 2147483647) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647))' at error location [2022-11-16 20:39:31,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:39:31,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:39:31,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110, 110] total 220 [2022-11-16 20:39:31,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829896763] [2022-11-16 20:39:31,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:39:31,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 222 states [2022-11-16 20:39:31,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:39:31,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2022-11-16 20:39:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12473, Invalid=41119, Unknown=0, NotChecked=0, Total=53592 [2022-11-16 20:39:31,564 INFO L87 Difference]: Start difference. First operand 768 states and 824 transitions. Second operand has 222 states, 221 states have (on average 3.484162895927602) internal successors, (770), 221 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:39:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:39:45,306 INFO L93 Difference]: Finished difference Result 1555 states and 1778 transitions. [2022-11-16 20:39:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-11-16 20:39:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 222 states, 221 states have (on average 3.484162895927602) internal successors, (770), 221 states have internal predecessors, (770), 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 385 [2022-11-16 20:39:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:39:45,313 INFO L225 Difference]: With dead ends: 1555 [2022-11-16 20:39:45,313 INFO L226 Difference]: Without dead ends: 1554 [2022-11-16 20:39:45,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1373 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27816 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=30899, Invalid=85723, Unknown=0, NotChecked=0, Total=116622 [2022-11-16 20:39:45,326 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3436 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3436 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:39:45,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3436 Valid, 813 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 20:39:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-11-16 20:39:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1552. [2022-11-16 20:39:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 1.072856221792392) internal successors, (1664), 1551 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:39:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 1664 transitions. [2022-11-16 20:39:45,387 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 1664 transitions. Word has length 385 [2022-11-16 20:39:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:39:45,388 INFO L495 AbstractCegarLoop]: Abstraction has 1552 states and 1664 transitions. [2022-11-16 20:39:45,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 222 states, 221 states have (on average 3.484162895927602) internal successors, (770), 221 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:39:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 1664 transitions. [2022-11-16 20:39:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2022-11-16 20:39:45,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:39:45,414 INFO L195 NwaCegarLoop]: trace histogram [111, 111, 110, 110, 56, 56, 56, 55, 55, 55, 1, 1] [2022-11-16 20:39:45,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 20:39:45,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 20:39:45,621 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 20:39:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:39:45,622 INFO L85 PathProgramCache]: Analyzing trace with hash -234722273, now seen corresponding path program 7 times [2022-11-16 20:39:45,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:39:45,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653283395] [2022-11-16 20:39:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:39:45,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:39:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:40:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 36465 backedges. 28416 proven. 524 refuted. 0 times theorem prover too weak. 7525 trivial. 0 not checked. [2022-11-16 20:40:11,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:40:11,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653283395] [2022-11-16 20:40:11,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653283395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:40:11,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158391599] [2022-11-16 20:40:11,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 20:40:11,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:40:11,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:40:11,536 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:40:11,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0523dc49-2acf-47ee-beb5-7cb0ab002351/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 20:40:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:40:11,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 223 conjunts are in the unsatisfiable core [2022-11-16 20:40:12,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:40:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 36465 backedges. 0 proven. 36465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:40:44,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:41:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 36465 backedges. 0 proven. 36465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:41:50,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158391599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:41:50,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1971422260] [2022-11-16 20:41:50,131 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-16 20:41:50,132 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:41:50,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:41:50,132 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:41:50,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:41:50,750 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:42:06,569 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18034#(and (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (exists ((|v_ULTIMATE.start_f_~a#1_311| Int)) (and (< 1 |v_ULTIMATE.start_f_~a#1_311|) (= |ULTIMATE.start_f_~a#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_311| 2) 1) (div |v_ULTIMATE.start_f_~a#1_311| 2))) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_311| 2) 1) (div |v_ULTIMATE.start_f_~a#1_311| 2)) 2147483647) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_311| 2) 1) (div |v_ULTIMATE.start_f_~a#1_311| 2)) 2147483648)) (= |ULTIMATE.start_f_~tmp~0#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_311| 2)) (mod |v_ULTIMATE.start_f_~a#1_311| 2))))) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)))' at error location [2022-11-16 20:42:06,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:42:06,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:42:06,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 222, 222] total 537 [2022-11-16 20:42:06,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068014654] [2022-11-16 20:42:06,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:42:06,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 538 states [2022-11-16 20:42:06,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:42:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 538 interpolants. [2022-11-16 20:42:06,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53329, Invalid=246427, Unknown=0, NotChecked=0, Total=299756 [2022-11-16 20:42:06,619 INFO L87 Difference]: Start difference. First operand 1552 states and 1664 transitions. Second operand has 538 states, 538 states have (on average 3.693308550185874) internal successors, (1987), 537 states have internal predecessors, (1987), 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)