/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.6.2.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:17:29,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:17:29,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:17:29,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:17:29,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:17:29,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:17:29,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:17:29,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:17:29,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:17:29,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:17:29,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:17:29,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:17:29,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:17:29,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:17:29,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:17:29,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:17:29,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:17:29,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:17:29,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:17:29,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:17:29,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:17:29,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:17:29,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:17:29,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:17:29,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:17:29,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:17:29,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:17:29,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:17:29,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:17:29,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:17:29,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:17:29,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:17:29,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:17:29,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:17:29,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:17:29,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:17:29,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:17:29,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:17:29,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:17:29,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:17:29,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:17:29,867 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 06:17:29,896 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:17:29,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:17:29,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:17:29,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:17:29,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:17:29,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:17:29,897 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:17:29,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:17:29,898 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:17:29,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:17:29,898 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:17:29,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:17:29,898 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:17:29,898 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:17:29,899 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:17:29,899 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:17:29,899 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:17:29,899 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:17:29,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:17:29,899 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:17:29,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:17:29,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:17:29,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:17:29,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:17:29,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:17:29,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:17:29,900 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:17:29,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:17:29,900 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:17:29,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:17:29,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:17:29,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:17:29,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:17:29,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:17:29,901 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:17:29,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:17:29,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:17:29,901 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:17:29,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:17:29,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:17:29,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:17:29,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:17:30,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:17:30,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:17:30,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:17:30,086 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:17:30,086 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:17:30,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2023-04-01 06:17:31,077 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:17:31,241 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:17:31,241 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2023-04-01 06:17:31,248 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed957da3/91c627b19dc942e1b71704baa87beec0/FLAG6cc042e9b [2023-04-01 06:17:31,258 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed957da3/91c627b19dc942e1b71704baa87beec0 [2023-04-01 06:17:31,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:17:31,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:17:31,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:17:31,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:17:31,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:17:31,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eef6a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31, skipping insertion in model container [2023-04-01 06:17:31,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:17:31,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:17:31,464 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.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2023-04-01 06:17:31,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:17:31,474 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:17:31,533 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.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2023-04-01 06:17:31,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:17:31,544 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:17:31,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31 WrapperNode [2023-04-01 06:17:31,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:17:31,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:17:31,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:17:31,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:17:31,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:17:31,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:17:31,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:17:31,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:17:31,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (1/1) ... [2023-04-01 06:17:31,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:17:31,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:17:31,666 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 06:17:31,699 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 06:17:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:17:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:17:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:17:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:17:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-01 06:17:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-01 06:17:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-01 06:17:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-01 06:17:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-01 06:17:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-01 06:17:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 06:17:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 06:17:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:17:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 06:17:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:17:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:17:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:17:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:17:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:17:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:17:31,827 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:17:31,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:17:32,308 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:17:32,670 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:17:32,670 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 06:17:32,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:17:32 BoogieIcfgContainer [2023-04-01 06:17:32,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:17:32,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:17:32,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:17:32,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:17:32,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:17:31" (1/3) ... [2023-04-01 06:17:32,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a652e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:17:32, skipping insertion in model container [2023-04-01 06:17:32,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:31" (2/3) ... [2023-04-01 06:17:32,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a652e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:17:32, skipping insertion in model container [2023-04-01 06:17:32,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:17:32" (3/3) ... [2023-04-01 06:17:32,681 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2023-04-01 06:17:32,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:17:32,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:17:32,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:17:32,737 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;@dbedf93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:17:32,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:17:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-01 06:17:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-01 06:17:32,746 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:17:32,747 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] [2023-04-01 06:17:32,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:17:32,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:17:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash 30047239, now seen corresponding path program 1 times [2023-04-01 06:17:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:17:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607738584] [2023-04-01 06:17:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:17:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:17:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:17:37,107 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 06:17:37,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:17:37,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607738584] [2023-04-01 06:17:37,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607738584] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:17:37,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:17:37,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-04-01 06:17:37,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485301289] [2023-04-01 06:17:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:17:37,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-01 06:17:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:17:37,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-01 06:17:37,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2023-04-01 06:17:37,134 INFO L87 Difference]: Start difference. First operand has 48 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 06:17:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:17:38,947 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2023-04-01 06:17:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 06:17:38,949 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 41 [2023-04-01 06:17:38,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:17:38,956 INFO L225 Difference]: With dead ends: 127 [2023-04-01 06:17:38,956 INFO L226 Difference]: Without dead ends: 86 [2023-04-01 06:17:38,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=583, Invalid=3077, Unknown=0, NotChecked=0, Total=3660 [2023-04-01 06:17:38,986 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 210 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:17:38,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 253 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:17:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-04-01 06:17:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2023-04-01 06:17:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-01 06:17:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2023-04-01 06:17:39,079 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 41 [2023-04-01 06:17:39,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:17:39,079 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2023-04-01 06:17:39,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 06:17:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2023-04-01 06:17:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 06:17:39,099 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:17:39,099 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:17:39,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:17:39,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:17:39,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:17:39,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1880779310, now seen corresponding path program 1 times [2023-04-01 06:17:39,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:17:39,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917581701] [2023-04-01 06:17:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:17:39,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:17:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:18:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:18:03,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:18:03,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917581701] [2023-04-01 06:18:03,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917581701] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:18:03,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030249087] [2023-04-01 06:18:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:18:03,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:18:03,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:18:03,367 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) [2023-04-01 06:18:03,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 06:18:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:18:03,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 229 conjunts are in the unsatisfiable core [2023-04-01 06:18:03,720 INFO L285 TraceCheckSpWp]: Computing forward predicates...