/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.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:42:06,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:42:06,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:42:06,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:42:06,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:42:06,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:42:06,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:42:06,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:42:06,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:42:06,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:42:06,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:42:06,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:42:06,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:42:06,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:42:06,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:42:06,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:42:06,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:42:06,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:42:06,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:42:06,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:42:06,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:42:06,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:42:06,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:42:06,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:42:06,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:42:06,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:42:06,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:42:06,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:42:06,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:42:06,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:42:06,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:42:06,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:42:06,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:42:06,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:42:06,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:42:06,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:42:06,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:42:06,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:42:06,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:42:06,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:42:06,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:42:06,176 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 01:42:06,206 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:42:06,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:42:06,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:42:06,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:42:06,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:42:06,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:42:06,208 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:42:06,208 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:42:06,208 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:42:06,208 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:42:06,209 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:42:06,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:42:06,209 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:42:06,209 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:42:06,210 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:42:06,210 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:42:06,210 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:42:06,210 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:42:06,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:42:06,210 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:42:06,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:42:06,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:42:06,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:42:06,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:42:06,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:42:06,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:42:06,212 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:42:06,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:42:06,212 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:42:06,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:42:06,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:42:06,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:42:06,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:42:06,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:42:06,213 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:42:06,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:42:06,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:42:06,213 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:42:06,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:42:06,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:42:06,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:42:06,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:42:06,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:42:06,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:42:06,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:42:06,457 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:42:06,457 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:42:06,458 INFO L432 ainManager$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 [2023-04-03 01:42:07,587 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:42:07,819 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:42:07,819 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 [2023-04-03 01:42:07,829 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436fdd848/2463190fb7e04297a2ad6c5c09b26644/FLAG5676b38e0 [2023-04-03 01:42:07,844 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436fdd848/2463190fb7e04297a2ad6c5c09b26644 [2023-04-03 01:42:07,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:42:07,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:42:07,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:42:07,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:42:07,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:42:07,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:42:07" (1/1) ... [2023-04-03 01:42:07,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e293f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:07, skipping insertion in model container [2023-04-03 01:42:07,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:42:07" (1/1) ... [2023-04-03 01:42:07,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:42:07,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:42:08,043 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] [2023-04-03 01:42:08,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:42:08,058 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:42:08,094 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] [2023-04-03 01:42:08,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:42:08,108 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:42:08,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08 WrapperNode [2023-04-03 01:42:08,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:42:08,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:42:08,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:42:08,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:42:08,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (1/1) ... [2023-04-03 01:42:08,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (1/1) ... [2023-04-03 01:42:08,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (1/1) ... [2023-04-03 01:42:08,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (1/1) ... [2023-04-03 01:42:08,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (1/1) ... [2023-04-03 01:42:08,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (1/1) ... [2023-04-03 01:42:08,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (1/1) ... [2023-04-03 01:42:08,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (1/1) ... [2023-04-03 01:42:08,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:42:08,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:42:08,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:42:08,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:42:08,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (1/1) ... [2023-04-03 01:42:08,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:42:08,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:42:08,174 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 01:42:08,177 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 01:42:08,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:42:08,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:42:08,210 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:42:08,210 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:42:08,210 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:42:08,211 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:42:08,211 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:42:08,211 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:42:08,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:42:08,211 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:42:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:42:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:42:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:42:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:42:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:42:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:42:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:42:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:42:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:42:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:42:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:42:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:42:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:42:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:42:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:42:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:42:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:42:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:42:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:42:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:42:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:42:08,347 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:42:08,349 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:42:08,822 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:42:09,063 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:42:09,063 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:42:09,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:42:09 BoogieIcfgContainer [2023-04-03 01:42:09,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:42:09,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:42:09,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:42:09,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:42:09,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:42:07" (1/3) ... [2023-04-03 01:42:09,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd14b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:42:09, skipping insertion in model container [2023-04-03 01:42:09,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:08" (2/3) ... [2023-04-03 01:42:09,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd14b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:42:09, skipping insertion in model container [2023-04-03 01:42:09,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:42:09" (3/3) ... [2023-04-03 01:42:09,073 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2023-04-03 01:42:09,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:42:09,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:42:09,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:42:09,138 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;@2feaa751, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:42:09,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:42:09,141 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) [2023-04-03 01:42:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-03 01:42:09,148 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:09,149 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] [2023-04-03 01:42:09,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:09,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash -583492062, now seen corresponding path program 1 times [2023-04-03 01:42:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613113119] [2023-04-03 01:42:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:11,555 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 01:42:11,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:11,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613113119] [2023-04-03 01:42:11,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613113119] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:11,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:11,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-03 01:42:11,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593123185] [2023-04-03 01:42:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:11,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-03 01:42:11,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:11,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-03 01:42:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:42:11,612 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) [2023-04-03 01:42:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:12,555 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2023-04-03 01:42:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-03 01:42:12,557 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 [2023-04-03 01:42:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:12,563 INFO L225 Difference]: With dead ends: 96 [2023-04-03 01:42:12,563 INFO L226 Difference]: Without dead ends: 61 [2023-04-03 01:42:12,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=1009, Unknown=0, NotChecked=0, Total=1260 [2023-04-03 01:42:12,568 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 121 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-04-03 01:42:12,569 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] [2023-04-03 01:42:12,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-04-03 01:42:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2023-04-03 01:42:12,615 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) [2023-04-03 01:42:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2023-04-03 01:42:12,618 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 28 [2023-04-03 01:42:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:12,618 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2023-04-03 01:42:12,618 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) [2023-04-03 01:42:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2023-04-03 01:42:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-03 01:42:12,620 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:12,620 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] [2023-04-03 01:42:12,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:42:12,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:12,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1870567172, now seen corresponding path program 1 times [2023-04-03 01:42:12,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:12,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509605184] [2023-04-03 01:42:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:12,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:42:19,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509605184] [2023-04-03 01:42:19,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509605184] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:42:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515251024] [2023-04-03 01:42:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:19,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:42:19,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:42:19,237 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 01:42:19,261 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 01:42:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:19,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 140 conjunts are in the unsatisfiable core [2023-04-03 01:42:19,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:42:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:37,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:43:08,419 WARN L223 SmtUtils]: Spent 30.53s 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) [2023-04-03 01:43:40,087 WARN L223 SmtUtils]: Spent 29.90s on a formula simplification. DAG size of input: 1255 DAG size of output: 88 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:43:55,396 WARN L223 SmtUtils]: Spent 13.11s on a formula simplification. DAG size of input: 845 DAG size of output: 96 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:44:43,468 WARN L223 SmtUtils]: Spent 30.87s on a formula simplification. DAG size of input: 1259 DAG size of output: 93 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)