/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:11:35,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:11:35,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:11:35,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:11:35,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:11:35,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:11:35,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:11:35,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:11:35,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:11:35,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:11:35,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:11:35,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:11:35,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:11:35,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:11:35,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:11:35,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:11:35,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:11:35,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:11:35,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:11:35,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:11:35,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:11:35,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:11:35,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:11:35,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:11:35,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 00:11:35,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 00:11:35,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 00:11:35,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 00:11:35,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 00:11:35,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 00:11:35,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:11:35,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:11:35,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:11:35,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:11:35,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:11:35,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:11:35,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:11:35,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:11:35,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:11:35,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:11:35,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:11:35,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 00:11:35,607 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:11:35,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:11:35,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:11:35,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:11:35,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:11:35,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:11:35,609 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:11:35,609 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:11:35,609 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:11:35,609 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:11:35,610 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:11:35,610 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:11:35,610 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:11:35,610 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:11:35,610 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:11:35,610 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:11:35,611 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:11:35,611 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:11:35,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:11:35,611 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:11:35,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:11:35,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:11:35,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:11:35,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:11:35,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:11:35,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:11:35,612 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:11:35,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:11:35,612 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:11:35,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:11:35,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:11:35,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:11:35,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:11:35,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:11:35,613 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:11:35,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:11:35,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:11:35,613 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:11:35,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:11:35,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:11:35,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:11:35,614 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:11:36,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:11:36,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:11:36,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:11:36,075 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:11:36,075 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:11:36,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c [2023-04-01 00:11:37,789 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:11:38,227 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:11:38,228 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c [2023-04-01 00:11:38,253 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5713af5/3f54ffe0692449e6bdb8a307846449a3/FLAGc30e54fbd [2023-04-01 00:11:38,269 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5713af5/3f54ffe0692449e6bdb8a307846449a3 [2023-04-01 00:11:38,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:11:38,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:11:38,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:11:38,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:11:38,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:11:38,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:11:38" (1/1) ... [2023-04-01 00:11:38,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4721e1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:38, skipping insertion in model container [2023-04-01 00:11:38,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:11:38" (1/1) ... [2023-04-01 00:11:38,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:11:38,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:11:38,995 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c[60917,60930] [2023-04-01 00:11:38,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:11:39,032 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:11:39,139 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c[60917,60930] [2023-04-01 00:11:39,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:11:39,160 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:11:39,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39 WrapperNode [2023-04-01 00:11:39,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:11:39,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:11:39,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:11:39,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:11:39,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (1/1) ... [2023-04-01 00:11:39,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (1/1) ... [2023-04-01 00:11:39,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (1/1) ... [2023-04-01 00:11:39,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (1/1) ... [2023-04-01 00:11:39,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (1/1) ... [2023-04-01 00:11:39,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (1/1) ... [2023-04-01 00:11:39,274 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (1/1) ... [2023-04-01 00:11:39,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (1/1) ... [2023-04-01 00:11:39,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:11:39,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:11:39,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:11:39,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:11:39,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (1/1) ... [2023-04-01 00:11:39,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:11:39,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:11:39,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 00:11:39,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 00:11:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:11:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:11:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:11:39,403 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:11:39,403 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-01 00:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-01 00:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-01 00:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-01 00:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-01 00:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 00:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 00:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:11:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 00:11:39,404 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:11:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:11:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:11:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:11:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:11:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:11:39,637 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:11:39,639 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:11:41,081 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:11:42,319 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:11:42,319 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 00:11:42,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:11:42 BoogieIcfgContainer [2023-04-01 00:11:42,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:11:42,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:11:42,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:11:42,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:11:42,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:11:38" (1/3) ... [2023-04-01 00:11:42,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3707ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:11:42, skipping insertion in model container [2023-04-01 00:11:42,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:11:39" (2/3) ... [2023-04-01 00:11:42,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3707ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:11:42, skipping insertion in model container [2023-04-01 00:11:42,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:11:42" (3/3) ... [2023-04-01 00:11:42,330 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.BOUNDED-10.pals.c [2023-04-01 00:11:42,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:11:42,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:11:42,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:11:42,398 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;@96981fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:11:42,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:11:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 479 states, 455 states have (on average 1.6923076923076923) internal successors, (770), 456 states have internal predecessors, (770), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-01 00:11:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-01 00:11:42,420 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:11:42,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:11:42,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:11:42,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:11:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1230202245, now seen corresponding path program 1 times [2023-04-01 00:11:42,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:11:42,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639605544] [2023-04-01 00:11:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:11:42,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:11:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:11:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:11:56,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:11:56,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639605544] [2023-04-01 00:11:56,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639605544] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:11:56,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:11:56,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-01 00:11:56,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452110467] [2023-04-01 00:11:56,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:11:56,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-01 00:11:56,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:11:56,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-01 00:11:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-04-01 00:11:57,002 INFO L87 Difference]: Start difference. First operand has 479 states, 455 states have (on average 1.6923076923076923) internal successors, (770), 456 states have internal predecessors, (770), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 23 states, 11 states have (on average 12.727272727272727) internal successors, (140), 13 states have internal predecessors, (140), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-01 00:12:02,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:02,978 INFO L93 Difference]: Finished difference Result 594 states and 941 transitions. [2023-04-01 00:12:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 00:12:02,981 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 11 states have (on average 12.727272727272727) internal successors, (140), 13 states have internal predecessors, (140), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 160 [2023-04-01 00:12:02,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:02,997 INFO L225 Difference]: With dead ends: 594 [2023-04-01 00:12:02,997 INFO L226 Difference]: Without dead ends: 536 [2023-04-01 00:12:03,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2023-04-01 00:12:03,003 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6477 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7271 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6480 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 7470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 7271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:03,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6480 Valid, 206 Invalid, 7470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [199 Valid, 7271 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 00:12:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-04-01 00:12:03,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 510. [2023-04-01 00:12:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.680672268907563) internal successors, (800), 477 states have internal predecessors, (800), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2023-04-01 00:12:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 834 transitions. [2023-04-01 00:12:03,126 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 834 transitions. Word has length 160 [2023-04-01 00:12:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:03,128 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 834 transitions. [2023-04-01 00:12:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 11 states have (on average 12.727272727272727) internal successors, (140), 13 states have internal predecessors, (140), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-01 00:12:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 834 transitions. [2023-04-01 00:12:03,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-01 00:12:03,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:03,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:12:03,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:12:03,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:03,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1326141833, now seen corresponding path program 1 times [2023-04-01 00:12:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:03,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947318852] [2023-04-01 00:12:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:12:11,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:11,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947318852] [2023-04-01 00:12:11,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947318852] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:11,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:11,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:11,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598480744] [2023-04-01 00:12:11,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:11,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:11,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:11,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:11,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:11,289 INFO L87 Difference]: Start difference. First operand 510 states and 834 transitions. Second operand has 11 states, 7 states have (on average 20.142857142857142) internal successors, (141), 9 states have internal predecessors, (141), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 00:12:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:15,292 INFO L93 Difference]: Finished difference Result 593 states and 939 transitions. [2023-04-01 00:12:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:15,293 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.142857142857142) internal successors, (141), 9 states have internal predecessors, (141), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 161 [2023-04-01 00:12:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:15,298 INFO L225 Difference]: With dead ends: 593 [2023-04-01 00:12:15,298 INFO L226 Difference]: Without dead ends: 543 [2023-04-01 00:12:15,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-01 00:12:15,300 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 849 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 6313 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 6335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 6313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:15,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 118 Invalid, 6335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 6313 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-01 00:12:15,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-04-01 00:12:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 510. [2023-04-01 00:12:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.6785714285714286) internal successors, (799), 477 states have internal predecessors, (799), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-01 00:12:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 832 transitions. [2023-04-01 00:12:15,347 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 832 transitions. Word has length 161 [2023-04-01 00:12:15,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:15,349 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 832 transitions. [2023-04-01 00:12:15,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.142857142857142) internal successors, (141), 9 states have internal predecessors, (141), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 00:12:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 832 transitions. [2023-04-01 00:12:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-04-01 00:12:15,351 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:15,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:12:15,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:12:15,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:15,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:15,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1101409636, now seen corresponding path program 1 times [2023-04-01 00:12:15,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:15,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55381097] [2023-04-01 00:12:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:15,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:12:20,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:20,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55381097] [2023-04-01 00:12:20,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55381097] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:20,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:20,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692619535] [2023-04-01 00:12:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:20,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:20,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:20,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:20,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:20,027 INFO L87 Difference]: Start difference. First operand 510 states and 832 transitions. Second operand has 11 states, 7 states have (on average 20.285714285714285) internal successors, (142), 9 states have internal predecessors, (142), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 00:12:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:22,610 INFO L93 Difference]: Finished difference Result 587 states and 923 transitions. [2023-04-01 00:12:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:22,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.285714285714285) internal successors, (142), 9 states have internal predecessors, (142), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 162 [2023-04-01 00:12:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:22,614 INFO L225 Difference]: With dead ends: 587 [2023-04-01 00:12:22,615 INFO L226 Difference]: Without dead ends: 542 [2023-04-01 00:12:22,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-01 00:12:22,617 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 854 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5542 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 5575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 5542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:22,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 111 Invalid, 5575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 5542 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 00:12:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-04-01 00:12:22,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 510. [2023-04-01 00:12:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.6764705882352942) internal successors, (798), 477 states have internal predecessors, (798), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-01 00:12:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 831 transitions. [2023-04-01 00:12:22,664 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 831 transitions. Word has length 162 [2023-04-01 00:12:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:22,665 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 831 transitions. [2023-04-01 00:12:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.285714285714285) internal successors, (142), 9 states have internal predecessors, (142), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 00:12:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 831 transitions. [2023-04-01 00:12:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-01 00:12:22,668 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:22,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:12:22,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:12:22,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:22,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash 152805248, now seen corresponding path program 1 times [2023-04-01 00:12:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:22,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905487949] [2023-04-01 00:12:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:22,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:12:28,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:28,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905487949] [2023-04-01 00:12:28,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905487949] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:28,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:28,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:28,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478165476] [2023-04-01 00:12:28,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:28,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:28,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:28,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:28,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:28,695 INFO L87 Difference]: Start difference. First operand 510 states and 831 transitions. Second operand has 11 states, 7 states have (on average 20.428571428571427) internal successors, (143), 9 states have internal predecessors, (143), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 00:12:31,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:31,928 INFO L93 Difference]: Finished difference Result 593 states and 928 transitions. [2023-04-01 00:12:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:31,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.428571428571427) internal successors, (143), 9 states have internal predecessors, (143), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 163 [2023-04-01 00:12:31,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:31,934 INFO L225 Difference]: With dead ends: 593 [2023-04-01 00:12:31,934 INFO L226 Difference]: Without dead ends: 548 [2023-04-01 00:12:31,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-01 00:12:31,936 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1655 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5542 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 5610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 5542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:31,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 105 Invalid, 5610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 5542 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 00:12:31,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-04-01 00:12:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 510. [2023-04-01 00:12:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.6743697478991597) internal successors, (797), 477 states have internal predecessors, (797), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-01 00:12:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 830 transitions. [2023-04-01 00:12:31,988 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 830 transitions. Word has length 163 [2023-04-01 00:12:31,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:31,988 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 830 transitions. [2023-04-01 00:12:31,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.428571428571427) internal successors, (143), 9 states have internal predecessors, (143), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 00:12:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 830 transitions. [2023-04-01 00:12:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-01 00:12:31,991 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:32,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:12:32,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:12:32,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:32,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1917551693, now seen corresponding path program 1 times [2023-04-01 00:12:32,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:32,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338231153] [2023-04-01 00:12:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:32,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat