/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 OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:45:50,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:45:50,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:45:50,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:45:50,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:45:50,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:45:50,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:45:50,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:45:50,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:45:50,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:45:50,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:45:50,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:45:50,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:45:50,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:45:50,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:45:50,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:45:50,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:45:50,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:45:50,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:45:50,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:45:50,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:45:50,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:45:50,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:45:50,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:45:50,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:45:50,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:45:50,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:45:50,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:45:50,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:45:50,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:45:50,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:45:50,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:45:50,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:45:50,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:45:50,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:45:50,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:45:50,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:45:50,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:45:50,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:45:50,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:45:50,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:45:50,528 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 [2023-04-03 01:45:50,554 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:45:50,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:45:50,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:45:50,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:45:50,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:45:50,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:45:50,556 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:45:50,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:45:50,556 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:45:50,556 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:45:50,556 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:45:50,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:45:50,556 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:45:50,556 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:45:50,556 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:45:50,556 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:45:50,556 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:45:50,557 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:45:50,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:45:50,557 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:45:50,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:45:50,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:45:50,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:45:50,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:45:50,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:45:50,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:45:50,558 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:45:50,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:45:50,558 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:45:50,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:45:50,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:45:50,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:45:50,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:45:50,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:45:50,559 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:45:50,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:45:50,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:45:50,559 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:45:50,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:45:50,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:45:50,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:45:50,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:45:50,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:45:50,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:45:50,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:45:50,782 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:45:50,783 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:45:50,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2023-04-03 01:45:51,962 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:45:52,179 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:45:52,179 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2023-04-03 01:45:52,187 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe150b20/776540560e154d42a4bf90616dcdcd76/FLAG1878fec3d [2023-04-03 01:45:52,199 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe150b20/776540560e154d42a4bf90616dcdcd76 [2023-04-03 01:45:52,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:45:52,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:45:52,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:45:52,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:45:52,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:45:52,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590429c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52, skipping insertion in model container [2023-04-03 01:45:52,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:45:52,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:45:52,427 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_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2023-04-03 01:45:52,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:45:52,441 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:45:52,508 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_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2023-04-03 01:45:52,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:45:52,526 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:45:52,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52 WrapperNode [2023-04-03 01:45:52,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:45:52,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:45:52,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:45:52,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:45:52,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:45:52,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:45:52,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:45:52,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:45:52,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (1/1) ... [2023-04-03 01:45:52,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:45:52,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:45:52,630 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) [2023-04-03 01:45:52,654 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 [2023-04-03 01:45:52,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:45:52,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:45:52,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:45:52,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:45:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:45:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:45:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:45:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:45:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:45:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:45:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:45:52,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:45:52,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:45:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:45:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:45:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:45:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:45:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:45:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:45:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 01:45:52,677 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:45:52,678 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:45:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:45:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:45:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:45:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:45:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:45:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:45:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:45:52,795 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:45:52,797 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:45:53,272 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:45:53,679 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:45:53,679 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:45:53,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:45:53 BoogieIcfgContainer [2023-04-03 01:45:53,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:45:53,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:45:53,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:45:53,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:45:53,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:45:52" (1/3) ... [2023-04-03 01:45:53,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ba8e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:45:53, skipping insertion in model container [2023-04-03 01:45:53,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:52" (2/3) ... [2023-04-03 01:45:53,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ba8e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:45:53, skipping insertion in model container [2023-04-03 01:45:53,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:45:53" (3/3) ... [2023-04-03 01:45:53,691 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2023-04-03 01:45:53,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:45:53,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:45:53,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:45:53,768 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;@1b6a962d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:45:53,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:45:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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) [2023-04-03 01:45:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-03 01:45:53,781 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:45:53,781 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] [2023-04-03 01:45:53,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:45:53,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:45:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash -58688284, now seen corresponding path program 1 times [2023-04-03 01:45:53,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:45:53,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377652607] [2023-04-03 01:45:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:45:53,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:45:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:45:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:45:58,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:45:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377652607] [2023-04-03 01:45:58,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377652607] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:45:58,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:45:58,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-04-03 01:45:58,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324010373] [2023-04-03 01:45:58,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:45:58,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-04-03 01:45:58,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:45:58,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-04-03 01:45:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2023-04-03 01:45:58,589 INFO L87 Difference]: Start difference. First operand has 44 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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 29 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-03 01:46:00,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:46:00,620 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2023-04-03 01:46:00,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-03 01:46:00,623 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 38 [2023-04-03 01:46:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:46:00,630 INFO L225 Difference]: With dead ends: 108 [2023-04-03 01:46:00,631 INFO L226 Difference]: Without dead ends: 77 [2023-04-03 01:46:00,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=591, Invalid=3069, Unknown=0, NotChecked=0, Total=3660 [2023-04-03 01:46:00,639 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 246 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:46:00,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 191 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:46:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-04-03 01:46:00,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2023-04-03 01:46:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-03 01:46:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2023-04-03 01:46:00,700 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 38 [2023-04-03 01:46:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:46:00,702 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2023-04-03 01:46:00,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-03 01:46:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2023-04-03 01:46:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-03 01:46:00,705 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:46:00,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:46:00,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:46:00,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:46:00,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:46:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash -116050922, now seen corresponding path program 1 times [2023-04-03 01:46:00,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:46:00,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691180906] [2023-04-03 01:46:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:46:00,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:46:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:46:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:46:16,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:46:16,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691180906] [2023-04-03 01:46:16,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691180906] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:46:16,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519051560] [2023-04-03 01:46:16,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:46:16,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:46:16,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:46:16,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:46:16,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 01:46:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:46:16,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 208 conjunts are in the unsatisfiable core [2023-04-03 01:46:16,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:47:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:47:12,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:47:43,589 WARN L223 SmtUtils]: Spent 30.04s on a formula simplification. DAG size of input: 1251 DAG size of output: 84 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:48:16,031 WARN L223 SmtUtils]: Spent 30.23s on a formula simplification. DAG size of input: 1251 DAG size of output: 85 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:48:51,242 WARN L223 SmtUtils]: Spent 30.04s on a formula simplification. DAG size of input: 1251 DAG size of output: 85 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)