./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF --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 676276db79a43f24ac4768848febffe3dd303b6e2c16071dede4e51ae957576d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:29:19,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:29:19,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:29:19,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:29:19,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:29:19,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:29:19,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:29:19,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:29:19,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:29:19,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:29:19,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:29:19,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:29:19,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:29:19,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:29:19,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:29:19,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:29:19,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:29:19,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:29:19,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:29:19,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:29:19,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:29:19,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:29:19,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:29:19,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:29:19,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:29:19,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:29:19,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:29:19,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:29:19,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:29:19,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:29:19,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:29:19,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:29:19,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:29:19,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:29:19,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:29:19,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:29:19,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:29:19,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:29:19,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:29:19,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:29:19,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:29:19,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-12 23:29:19,630 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:29:19,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:29:19,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:29:19,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:29:19,632 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:29:19,632 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:29:19,632 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:29:19,633 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:29:19,633 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:29:19,633 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:29:19,634 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:29:19,634 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:29:19,634 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:29:19,635 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:29:19,635 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:29:19,635 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:29:19,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:29:19,636 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:29:19,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:29:19,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:29:19,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:29:19,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:29:19,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:29:19,638 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-12 23:29:19,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:29:19,639 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:29:19,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:29:19,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:29:19,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:29:19,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:29:19,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:29:19,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:29:19,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:29:19,641 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:29:19,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:29:19,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:29:19,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:29:19,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:29:19,643 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 676276db79a43f24ac4768848febffe3dd303b6e2c16071dede4e51ae957576d [2021-11-12 23:29:19,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:29:19,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:29:19,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:29:19,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:29:19,999 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:29:20,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c [2021-11-12 23:29:20,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/data/3ba00011b/b9f012727bc54ad4b331899c0983943b/FLAG6da6cdeec [2021-11-12 23:29:20,616 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:29:20,616 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c [2021-11-12 23:29:20,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/data/3ba00011b/b9f012727bc54ad4b331899c0983943b/FLAG6da6cdeec [2021-11-12 23:29:20,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/data/3ba00011b/b9f012727bc54ad4b331899c0983943b [2021-11-12 23:29:20,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:29:20,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:29:21,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:29:21,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:29:21,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:29:21,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:29:20" (1/1) ... [2021-11-12 23:29:21,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bfd9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21, skipping insertion in model container [2021-11-12 23:29:21,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:29:20" (1/1) ... [2021-11-12 23:29:21,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:29:21,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:29:21,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:29:21,223 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:29:21,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:29:21,251 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:29:21,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21 WrapperNode [2021-11-12 23:29:21,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:29:21,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:29:21,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:29:21,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:29:21,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:29:21,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:29:21,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:29:21,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:29:21,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:29:21,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:29:21,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:29:21,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:29:21,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (1/1) ... [2021-11-12 23:29:21,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:29:21,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:29:21,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:29:21,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:29:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-11-12 23:29:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-11-12 23:29:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:29:21,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:29:21,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:29:21,744 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:29:21,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:29:21 BoogieIcfgContainer [2021-11-12 23:29:21,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:29:21,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:29:21,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:29:21,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:29:21,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:29:20" (1/3) ... [2021-11-12 23:29:21,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f82a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:29:21, skipping insertion in model container [2021-11-12 23:29:21,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:29:21" (2/3) ... [2021-11-12 23:29:21,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f82a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:29:21, skipping insertion in model container [2021-11-12 23:29:21,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:29:21" (3/3) ... [2021-11-12 23:29:21,772 INFO L111 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig2.c [2021-11-12 23:29:21,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:29:21,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-12 23:29:21,826 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:29:21,834 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:29:21,834 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-12 23:29:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 30 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:29:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:29:21,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:21,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:29:21,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:29:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash 155265, now seen corresponding path program 1 times [2021-11-12 23:29:21,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:29:21,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557454904] [2021-11-12 23:29:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:21,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:29:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:29:21,990 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:29:21,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557454904] [2021-11-12 23:29:21,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557454904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:21,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:29:21,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:29:21,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935222376] [2021-11-12 23:29:21,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:21,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:29:21,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:29:22,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:29:22,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:29:22,029 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 30 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:22,086 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-11-12 23:29:22,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:29:22,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-12 23:29:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:22,096 INFO L225 Difference]: With dead ends: 36 [2021-11-12 23:29:22,097 INFO L226 Difference]: Without dead ends: 33 [2021-11-12 23:29:22,101 INFO L932 BasicCegarLoop]: 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 [2021-11-12 23:29:22,108 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:22,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 30.32ms Time] [2021-11-12 23:29:22,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-12 23:29:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-12 23:29:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:29:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-11-12 23:29:22,164 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 3 [2021-11-12 23:29:22,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:22,165 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-11-12 23:29:22,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-11-12 23:29:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:29:22,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:22,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:29:22,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:29:22,169 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:29:22,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:22,175 INFO L85 PathProgramCache]: Analyzing trace with hash 4813296, now seen corresponding path program 1 times [2021-11-12 23:29:22,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:29:22,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460176407] [2021-11-12 23:29:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:22,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:29:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:29:22,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:29:22,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460176407] [2021-11-12 23:29:22,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460176407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:22,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:29:22,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:29:22,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979467604] [2021-11-12 23:29:22,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:22,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:29:22,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:29:22,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:29:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:29:22,226 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. 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) [2021-11-12 23:29:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:22,319 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2021-11-12 23:29:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:29:22,319 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 [2021-11-12 23:29:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:22,322 INFO L225 Difference]: With dead ends: 59 [2021-11-12 23:29:22,324 INFO L226 Difference]: Without dead ends: 57 [2021-11-12 23:29:22,325 INFO L932 BasicCegarLoop]: 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 [2021-11-12 23:29:22,327 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:22,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 65 Invalid, 20 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 74.31ms Time] [2021-11-12 23:29:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-12 23:29:22,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2021-11-12 23:29:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.35) internal successors, (54), 42 states have internal predecessors, (54), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:29:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2021-11-12 23:29:22,365 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 4 [2021-11-12 23:29:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:22,366 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2021-11-12 23:29:22,366 INFO L471 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) [2021-11-12 23:29:22,366 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2021-11-12 23:29:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:29:22,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:22,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:29:22,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:29:22,374 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:29:22,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:22,376 INFO L85 PathProgramCache]: Analyzing trace with hash 734658747, now seen corresponding path program 1 times [2021-11-12 23:29:22,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:29:22,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531172033] [2021-11-12 23:29:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:22,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:29:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:29:22,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:29:22,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531172033] [2021-11-12 23:29:22,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531172033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:22,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:29:22,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:29:22,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701496303] [2021-11-12 23:29:22,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:22,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:29:22,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:29:22,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:29:22,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:29:22,443 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:22,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:22,514 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2021-11-12 23:29:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:29:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-12 23:29:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:22,516 INFO L225 Difference]: With dead ends: 56 [2021-11-12 23:29:22,516 INFO L226 Difference]: Without dead ends: 55 [2021-11-12 23:29:22,516 INFO L932 BasicCegarLoop]: 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 [2021-11-12 23:29:22,520 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:22,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 63 Invalid, 20 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 54.62ms Time] [2021-11-12 23:29:22,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-12 23:29:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-11-12 23:29:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 44 states have internal predecessors, (56), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:29:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-11-12 23:29:22,537 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 14 [2021-11-12 23:29:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:22,538 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-11-12 23:29:22,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2021-11-12 23:29:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:29:22,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:22,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:29:22,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:29:22,540 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:29:22,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1299584820, now seen corresponding path program 1 times [2021-11-12 23:29:22,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:29:22,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135643832] [2021-11-12 23:29:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:22,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:29:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:29:22,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:29:22,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135643832] [2021-11-12 23:29:22,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135643832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:22,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:29:22,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:29:22,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146543746] [2021-11-12 23:29:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:22,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:29:22,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:29:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:29:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:29:22,625 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-11-12 23:29:22,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:22,676 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2021-11-12 23:29:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:29:22,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 23:29:22,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:22,679 INFO L225 Difference]: With dead ends: 54 [2021-11-12 23:29:22,679 INFO L226 Difference]: Without dead ends: 53 [2021-11-12 23:29:22,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:29:22,682 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.37ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:22,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 59 Invalid, 26 Unknown, 0 Unchecked, 1.37ms Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 31.68ms Time] [2021-11-12 23:29:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-12 23:29:22,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-12 23:29:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 43 states have internal predecessors, (55), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:29:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2021-11-12 23:29:22,695 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 15 [2021-11-12 23:29:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:22,696 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2021-11-12 23:29:22,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-11-12 23:29:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2021-11-12 23:29:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:29:22,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:22,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:29:22,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:29:22,699 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:29:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:22,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1626482871, now seen corresponding path program 1 times [2021-11-12 23:29:22,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:29:22,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992381283] [2021-11-12 23:29:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:22,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:29:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:29:22,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:29:22,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992381283] [2021-11-12 23:29:22,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992381283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:22,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:29:22,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:29:22,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754580554] [2021-11-12 23:29:22,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:22,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:29:22,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:29:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:29:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:29:22,752 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:22,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:22,795 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2021-11-12 23:29:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:29:22,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 23:29:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:22,797 INFO L225 Difference]: With dead ends: 57 [2021-11-12 23:29:22,797 INFO L226 Difference]: Without dead ends: 56 [2021-11-12 23:29:22,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:29:22,799 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.40ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:22,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 63 Invalid, 31 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 33.40ms Time] [2021-11-12 23:29:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-12 23:29:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2021-11-12 23:29:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 43 states have internal predecessors, (55), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:29:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2021-11-12 23:29:22,809 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 16 [2021-11-12 23:29:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:22,810 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2021-11-12 23:29:22,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2021-11-12 23:29:22,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:29:22,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:22,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:29:22,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:29:22,813 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:29:22,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash -636707599, now seen corresponding path program 1 times [2021-11-12 23:29:22,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:29:22,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620744639] [2021-11-12 23:29:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:22,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:29:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:29:22,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:29:22,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620744639] [2021-11-12 23:29:22,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620744639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:22,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:29:22,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:29:22,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046462412] [2021-11-12 23:29:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:22,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:29:22,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:29:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:29:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:29:22,849 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:22,888 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2021-11-12 23:29:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:29:22,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 23:29:22,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:22,890 INFO L225 Difference]: With dead ends: 63 [2021-11-12 23:29:22,891 INFO L226 Difference]: Without dead ends: 62 [2021-11-12 23:29:22,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:29:22,892 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 40 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:22,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 63 Invalid, 28 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 29.13ms Time] [2021-11-12 23:29:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-12 23:29:22,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2021-11-12 23:29:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:29:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2021-11-12 23:29:22,910 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 16 [2021-11-12 23:29:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:22,911 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2021-11-12 23:29:22,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2021-11-12 23:29:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:29:22,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:22,915 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:29:22,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 23:29:22,916 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:29:22,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:22,916 INFO L85 PathProgramCache]: Analyzing trace with hash -934466666, now seen corresponding path program 1 times [2021-11-12 23:29:22,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:29:22,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081654983] [2021-11-12 23:29:22,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:22,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:29:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:29:22,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:29:22,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081654983] [2021-11-12 23:29:22,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081654983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:29:22,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164967169] [2021-11-12 23:29:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:22,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:29:22,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:29:22,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:29:22,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:29:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:23,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:29:23,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:29:23,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:29:23,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164967169] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:29:23,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:29:23,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 6 [2021-11-12 23:29:23,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308866516] [2021-11-12 23:29:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:23,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:29:23,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:29:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:29:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:29:23,370 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:23,465 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2021-11-12 23:29:23,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:29:23,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-12 23:29:23,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:23,467 INFO L225 Difference]: With dead ends: 59 [2021-11-12 23:29:23,467 INFO L226 Difference]: Without dead ends: 52 [2021-11-12 23:29:23,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:29:23,469 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 13 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:23,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 94 Invalid, 35 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 81.62ms Time] [2021-11-12 23:29:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-12 23:29:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-12 23:29:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:29:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2021-11-12 23:29:23,486 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 17 [2021-11-12 23:29:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:23,486 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2021-11-12 23:29:23,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:29:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2021-11-12 23:29:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:29:23,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:23,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:29:23,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:23,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:29:23,711 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-12 23:29:23,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:23,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1990642157, now seen corresponding path program 1 times [2021-11-12 23:29:23,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:29:23,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20297466] [2021-11-12 23:29:23,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:23,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:29:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:29:23,721 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:29:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:29:23,760 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:29:23,760 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:29:23,761 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2021-11-12 23:29:23,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2021-11-12 23:29:23,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2021-11-12 23:29:23,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2021-11-12 23:29:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2021-11-12 23:29:23,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2021-11-12 23:29:23,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 23:29:23,767 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:29:23,771 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:29:23,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:29:23 BoogieIcfgContainer [2021-11-12 23:29:23,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:29:23,790 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:29:23,790 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:29:23,790 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:29:23,791 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:29:21" (3/4) ... [2021-11-12 23:29:23,793 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 23:29:23,845 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:29:23,845 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:29:23,846 INFO L158 Benchmark]: Toolchain (without parser) took 2846.58ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 53.5MB in the beginning and 78.9MB in the end (delta: -25.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:29:23,846 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 94.4MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:29:23,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.12ms. Allocated memory is still 94.4MB. Free memory was 53.3MB in the beginning and 70.7MB in the end (delta: -17.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-12 23:29:23,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.45ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 69.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:29:23,847 INFO L158 Benchmark]: Boogie Preprocessor took 23.65ms. Allocated memory is still 94.4MB. Free memory was 69.2MB in the beginning and 68.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:29:23,847 INFO L158 Benchmark]: RCFGBuilder took 440.92ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 53.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:29:23,848 INFO L158 Benchmark]: TraceAbstraction took 2024.21ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 53.2MB in the beginning and 81.1MB in the end (delta: -27.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:29:23,848 INFO L158 Benchmark]: Witness Printer took 55.20ms. Allocated memory is still 113.2MB. Free memory was 81.1MB in the beginning and 78.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:29:23,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 94.4MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.12ms. Allocated memory is still 94.4MB. Free memory was 53.3MB in the beginning and 70.7MB in the end (delta: -17.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.45ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 69.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.65ms. Allocated memory is still 94.4MB. Free memory was 69.2MB in the beginning and 68.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.92ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 53.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2024.21ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 53.2MB in the beginning and 81.1MB in the end (delta: -27.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 55.20ms. Allocated memory is still 113.2MB. Free memory was 81.1MB in the beginning and 78.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 81]: integer overflow possible integer overflow possible We found a FailurePath: [L53] int d = 1; [L54] int x = __VERIFIER_nondet_int(); [L56] COND TRUE __VERIFIER_nondet_int() [L57] EXPR d - 1 [L57] d = d - 1 VAL [d=0, x=2147483647] [L61] COND FALSE !(__VERIFIER_nondet_int()) [L64] COND FALSE !(__VERIFIER_nondet_int()) [L67] COND FALSE !(__VERIFIER_nondet_int()) [L70] COND FALSE !(__VERIFIER_nondet_int()) [L76] COND TRUE __VERIFIER_nondet_int() [L77] EXPR d - 1 [L77] d = d - 1 VAL [d=-1, x=2147483647] [L80] COND TRUE x > 0 VAL [d=-1, x=2147483647] [L81] x - d VAL [d=-1, x=2147483647] - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 223 SdHoareTripleChecker+Valid, 335.07ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187 mSDsluCounter, 441 SdHoareTripleChecker+Invalid, 261.42ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 213 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 239 mSDtfsCounter, 163 mSolverCounterSat, 12.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 574 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-12 23:29:23,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbd6a824-bc1a-4e2b-b7ae-c53bdd688d49/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)