/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_20.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:33:28,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:33:28,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:33:28,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:33:28,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:33:28,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:33:28,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:33:28,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:33:28,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:33:28,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:33:28,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:33:28,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 14:33:28,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:33:28,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:33:28,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:33:28,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:33:28,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:33:28,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:33:28,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:33:28,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:33:28,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:33:28,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:33:28,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:33:28,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:33:28,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 14:33:28,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 14:33:28,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 14:33:28,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 14:33:28,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 14:33:28,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 14:33:28,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 14:33:28,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 14:33:28,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 14:33:28,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 14:33:28,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 14:33:28,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 14:33:28,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 14:33:28,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 14:33:28,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:33:28,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:33:28,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:33:28,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 14:33:28,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:33:28,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:33:28,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:33:28,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:33:28,844 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:33:28,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:33:28,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:33:28,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:33:28,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:33:28,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:33:28,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:33:28,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:33:28,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:33:28,845 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:33:28,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:33:28,845 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:33:28,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:33:28,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:33:28,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:33:28,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:33:28,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:33:28,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:33:28,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:33:28,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:33:28,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:33:28,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:33:28,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:33:28,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:33:28,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:33:29,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:33:29,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:33:29,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:33:29,108 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 14:33:29,108 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 14:33:29,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_20.bpl [2021-03-11 14:33:29,109 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_20.bpl' [2021-03-11 14:33:29,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:33:29,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 14:33:29,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:33:29,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:33:29,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:33:29,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... [2021-03-11 14:33:29,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... [2021-03-11 14:33:29,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:33:29,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:33:29,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:33:29,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:33:29,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... [2021-03-11 14:33:29,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... [2021-03-11 14:33:29,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... [2021-03-11 14:33:29,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... [2021-03-11 14:33:29,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... [2021-03-11 14:33:29,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... [2021-03-11 14:33:29,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... [2021-03-11 14:33:29,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:33:29,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:33:29,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:33:29,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:33:29,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:33:29,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_16 given in one single declaration [2021-03-11 14:33:29,224 INFO L130 BoogieDeclarations]: Found specification of procedure set_16 [2021-03-11 14:33:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure set_16 [2021-03-11 14:33:29,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_17 given in one single declaration [2021-03-11 14:33:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure set_17 [2021-03-11 14:33:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure set_17 [2021-03-11 14:33:29,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-03-11 14:33:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-03-11 14:33:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-03-11 14:33:29,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_15 given in one single declaration [2021-03-11 14:33:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure set_15 [2021-03-11 14:33:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure set_15 [2021-03-11 14:33:29,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_18 given in one single declaration [2021-03-11 14:33:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure set_18 [2021-03-11 14:33:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure set_18 [2021-03-11 14:33:29,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_19 given in one single declaration [2021-03-11 14:33:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure set_19 [2021-03-11 14:33:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure set_19 [2021-03-11 14:33:29,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 14:33:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 14:33:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 14:33:29,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 14:33:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 14:33:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 14:33:29,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 14:33:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 14:33:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 14:33:29,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 14:33:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 14:33:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 14:33:29,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 14:33:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 14:33:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 14:33:29,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-03-11 14:33:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-03-11 14:33:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-03-11 14:33:29,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 14:33:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:33:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:33:29,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-03-11 14:33:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-03-11 14:33:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-03-11 14:33:29,228 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-11 14:33:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-11 14:33:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-11 14:33:29,229 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-03-11 14:33:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-03-11 14:33:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-03-11 14:33:29,229 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-11 14:33:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-11 14:33:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-11 14:33:29,229 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-03-11 14:33:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-03-11 14:33:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-03-11 14:33:29,229 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-03-11 14:33:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-03-11 14:33:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-03-11 14:33:29,230 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-03-11 14:33:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-03-11 14:33:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-03-11 14:33:29,230 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-03-11 14:33:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-03-11 14:33:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-03-11 14:33:29,231 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:33:29,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:33:29,429 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 14:33:29,430 INFO L202 PluginConnector]: Adding new model example_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:33:29 BoogieIcfgContainer [2021-03-11 14:33:29,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:33:29,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:33:29,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:33:29,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:33:29,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:33:29" (1/2) ... [2021-03-11 14:33:29,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1aa8e6 and model type example_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:33:29, skipping insertion in model container [2021-03-11 14:33:29,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:33:29" (2/2) ... [2021-03-11 14:33:29,443 INFO L111 eAbstractionObserver]: Analyzing ICFG example_20.bpl [2021-03-11 14:33:29,446 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:33:29,446 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:33:29,449 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:33:29,449 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:33:29,730 INFO L149 ThreadInstanceAdder]: Constructed 400 joinOtherThreadTransitions. [2021-03-11 14:33:29,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-03-11 14:33:29,766 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:33:29,766 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:33:29,767 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:33:29,767 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:33:29,767 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:33:29,767 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:33:29,767 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:33:29,767 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:33:29,787 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:33:29,801 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 483 transitions, 2266 flow [2021-03-11 14:33:29,803 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 483 transitions, 2266 flow [2021-03-11 14:33:29,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 164 places, 483 transitions, 2266 flow