/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 EqDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:22:20,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:22:20,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:22:20,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:22:20,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:22:20,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:22:20,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:22:20,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:22:20,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:22:20,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:22:20,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:22:20,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:22:20,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:22:20,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:22:20,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:22:20,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:22:20,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:22:20,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:22:20,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:22:20,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:22:20,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:22:20,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:22:20,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:22:20,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:22:20,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 12:22:20,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:22:20,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:22:20,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:22:20,634 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 12:22:20,659 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:22:20,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:22:20,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:22:20,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:22:20,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:22:20,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:22:20,661 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:22:20,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:22:20,662 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:22:20,662 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:22:20,662 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:22:20,663 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:22:20,663 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:22:20,663 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:22:20,663 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:22:20,663 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:22:20,663 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:22:20,663 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:22:20,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:22:20,664 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:22:20,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:22:20,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:22:20,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:22:20,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:22:20,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:22:20,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:22:20,665 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:22:20,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:22:20,665 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:22:20,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:22:20,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:22:20,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:22:20,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:22:20,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:22:20,666 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:22:20,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:22:20,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:22:20,666 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:22:20,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:22:20,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:22:20,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:22:20,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:22:20,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:22:20,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:22:20,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:22:20,928 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:22:20,928 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:22:20,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2023-04-01 12:22:21,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:22:22,194 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:22:22,194 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2023-04-01 12:22:22,200 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17cbf5ef9/945e7a207b044d4ea47016c3967e6709/FLAG9bede5850 [2023-04-01 12:22:22,210 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17cbf5ef9/945e7a207b044d4ea47016c3967e6709 [2023-04-01 12:22:22,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:22:22,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:22:22,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:22:22,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:22:22,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:22:22,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f8e5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22, skipping insertion in model container [2023-04-01 12:22:22,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:22:22,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:22:22,407 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.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2023-04-01 12:22:22,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:22:22,417 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:22:22,442 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.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2023-04-01 12:22:22,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:22:22,455 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:22:22,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22 WrapperNode [2023-04-01 12:22:22,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:22:22,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:22:22,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:22:22,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:22:22,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:22:22,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:22:22,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:22:22,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:22:22,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (1/1) ... [2023-04-01 12:22:22,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:22:22,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:22:22,531 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 12:22:22,564 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 12:22:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:22:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:22:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:22:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-01 12:22:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-01 12:22:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-01 12:22:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 12:22:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 12:22:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:22:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 12:22:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:22:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:22:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:22:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:22:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:22:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:22:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:22:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 12:22:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 12:22:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 12:22:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 12:22:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 12:22:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 12:22:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 12:22:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:22:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:22:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:22:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:22:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:22:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:22:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:22:22,706 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:22:22,708 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:22:23,052 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:22:23,306 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:22:23,307 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 12:22:23,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:22:23 BoogieIcfgContainer [2023-04-01 12:22:23,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:22:23,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:22:23,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:22:23,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:22:23,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:22:22" (1/3) ... [2023-04-01 12:22:23,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162dc105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:22:23, skipping insertion in model container [2023-04-01 12:22:23,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:22" (2/3) ... [2023-04-01 12:22:23,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162dc105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:22:23, skipping insertion in model container [2023-04-01 12:22:23,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:22:23" (3/3) ... [2023-04-01 12:22:23,318 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2023-04-01 12:22:23,330 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:22:23,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:22:23,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:22:23,375 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;@754a80c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:22:23,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:22:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 12:22:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-01 12:22:23,386 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:22:23,386 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] [2023-04-01 12:22:23,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:22:23,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:22:23,392 INFO L85 PathProgramCache]: Analyzing trace with hash -583492062, now seen corresponding path program 1 times [2023-04-01 12:22:23,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:22:23,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82165465] [2023-04-01 12:22:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:22:23,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:22:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:22:25,424 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 12:22:25,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:22:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82165465] [2023-04-01 12:22:25,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82165465] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:22:25,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:22:25,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-01 12:22:25,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436834308] [2023-04-01 12:22:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:22:25,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 12:22:25,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:22:25,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 12:22:25,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-04-01 12:22:25,465 INFO L87 Difference]: Start difference. First operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 6 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-01 12:22:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:22:26,229 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2023-04-01 12:22:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 12:22:26,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 6 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 28 [2023-04-01 12:22:26,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:22:26,236 INFO L225 Difference]: With dead ends: 96 [2023-04-01 12:22:26,236 INFO L226 Difference]: Without dead ends: 61 [2023-04-01 12:22:26,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=251, Invalid=1009, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 12:22:26,240 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 121 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:22:26,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 192 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:22:26,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-04-01 12:22:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2023-04-01 12:22:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-01 12:22:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2023-04-01 12:22:26,275 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 28 [2023-04-01 12:22:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:22:26,275 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2023-04-01 12:22:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 6 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-01 12:22:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2023-04-01 12:22:26,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-01 12:22:26,277 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:22:26,277 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:22:26,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:22:26,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:22:26,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:22:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1870567172, now seen corresponding path program 1 times [2023-04-01 12:22:26,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:22:26,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500157417] [2023-04-01 12:22:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:22:26,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:22:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:22:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:22:31,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:22:31,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500157417] [2023-04-01 12:22:31,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500157417] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:22:31,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923661277] [2023-04-01 12:22:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:22:31,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:22:31,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:22:31,498 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 12:22:31,499 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 12:22:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:22:31,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 140 conjunts are in the unsatisfiable core [2023-04-01 12:22:31,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:22:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:22:46,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:23:15,273 WARN L223 SmtUtils]: Spent 28.12s on a formula simplification. DAG size of input: 1247 DAG size of output: 80 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)