/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-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_20.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 04:05:57,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 04:05:57,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 04:05:57,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 04:05:57,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 04:05:57,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 04:05:57,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 04:05:57,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 04:05:57,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 04:05:57,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 04:05:57,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 04:05:57,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 04:05:57,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 04:05:57,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 04:05:57,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 04:05:57,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 04:05:57,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 04:05:57,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 04:05:57,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 04:05:57,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 04:05:57,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 04:05:57,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 04:05:57,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 04:05:57,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 04:05:57,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-29 04:05:57,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-29 04:05:57,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-29 04:05:57,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-29 04:05:57,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-29 04:05:57,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-29 04:05:57,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-29 04:05:57,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-29 04:05:57,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-29 04:05:57,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-29 04:05:57,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-29 04:05:57,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-29 04:05:57,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-29 04:05:57,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-29 04:05:57,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 04:05:57,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 04:05:57,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 04:05:57,959 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-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 04:05:58,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 04:05:58,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 04:05:58,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 04:05:58,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 04:05:58,015 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 04:05:58,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 04:05:58,016 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 04:05:58,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 04:05:58,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 04:05:58,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 04:05:58,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 04:05:58,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 04:05:58,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 04:05:58,018 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 04:05:58,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 04:05:58,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 04:05:58,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 04:05:58,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 04:05:58,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 04:05:58,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 04:05:58,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 04:05:58,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 04:05:58,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 04:05:58,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 04:05:58,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 04:05:58,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 04:05:58,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 04:05:58,021 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 04:05:58,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 04:05:58,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 04:05:58,022 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 04:05:58,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 04:05:58,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 04:05:58,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 04:05:58,493 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 04:05:58,494 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 04:05:58,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_20.bpl [2021-04-29 04:05:58,496 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_20.bpl' [2021-04-29 04:05:58,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 04:05:58,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 04:05:58,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 04:05:58,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 04:05:58,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 04:05:58,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/1) ... [2021-04-29 04:05:58,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/1) ... [2021-04-29 04:05:58,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 04:05:58,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 04:05:58,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 04:05:58,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 04:05:58,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/1) ... [2021-04-29 04:05:58,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/1) ... [2021-04-29 04:05:58,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/1) ... [2021-04-29 04:05:58,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/1) ... [2021-04-29 04:05:58,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/1) ... [2021-04-29 04:05:58,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/1) ... [2021-04-29 04:05:58,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/1) ... [2021-04-29 04:05:58,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 04:05:58,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 04:05:58,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 04:05:58,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 04:05:58,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (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 [2021-04-29 04:05:58,814 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_16 given in one single declaration [2021-04-29 04:05:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure set_16 [2021-04-29 04:05:58,819 INFO L138 BoogieDeclarations]: Found implementation of procedure set_16 [2021-04-29 04:05:58,820 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_17 given in one single declaration [2021-04-29 04:05:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure set_17 [2021-04-29 04:05:58,820 INFO L138 BoogieDeclarations]: Found implementation of procedure set_17 [2021-04-29 04:05:58,820 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_14 given in one single declaration [2021-04-29 04:05:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure set_14 [2021-04-29 04:05:58,821 INFO L138 BoogieDeclarations]: Found implementation of procedure set_14 [2021-04-29 04:05:58,821 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_15 given in one single declaration [2021-04-29 04:05:58,824 INFO L130 BoogieDeclarations]: Found specification of procedure set_15 [2021-04-29 04:05:58,825 INFO L138 BoogieDeclarations]: Found implementation of procedure set_15 [2021-04-29 04:05:58,826 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_18 given in one single declaration [2021-04-29 04:05:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure set_18 [2021-04-29 04:05:58,826 INFO L138 BoogieDeclarations]: Found implementation of procedure set_18 [2021-04-29 04:05:58,826 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_19 given in one single declaration [2021-04-29 04:05:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure set_19 [2021-04-29 04:05:58,827 INFO L138 BoogieDeclarations]: Found implementation of procedure set_19 [2021-04-29 04:05:58,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-04-29 04:05:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-04-29 04:05:58,830 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-04-29 04:05:58,831 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-04-29 04:05:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-04-29 04:05:58,833 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-04-29 04:05:58,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-04-29 04:05:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-04-29 04:05:58,834 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-04-29 04:05:58,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-04-29 04:05:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-04-29 04:05:58,835 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-04-29 04:05:58,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-04-29 04:05:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-04-29 04:05:58,835 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-04-29 04:05:58,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-04-29 04:05:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-04-29 04:05:58,836 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-04-29 04:05:58,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 04:05:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 04:05:58,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 04:05:58,837 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-04-29 04:05:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-04-29 04:05:58,837 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-04-29 04:05:58,837 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-04-29 04:05:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-04-29 04:05:58,839 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-04-29 04:05:58,839 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-04-29 04:05:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-04-29 04:05:58,839 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-04-29 04:05:58,839 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-04-29 04:05:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-04-29 04:05:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-04-29 04:05:58,840 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-04-29 04:05:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-04-29 04:05:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-04-29 04:05:58,840 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-04-29 04:05:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-04-29 04:05:58,841 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-04-29 04:05:58,846 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-04-29 04:05:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-04-29 04:05:58,847 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-04-29 04:05:58,847 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-04-29 04:05:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-04-29 04:05:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-04-29 04:05:58,849 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 04:05:59,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 04:05:59,139 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 04:05:59,141 INFO L202 PluginConnector]: Adding new model example_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 04:05:59 BoogieIcfgContainer [2021-04-29 04:05:59,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 04:05:59,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 04:05:59,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 04:05:59,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 04:05:59,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:05:58" (1/2) ... [2021-04-29 04:05:59,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6fffa1 and model type example_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 04:05:59, skipping insertion in model container [2021-04-29 04:05:59,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 04:05:59" (2/2) ... [2021-04-29 04:05:59,150 INFO L111 eAbstractionObserver]: Analyzing ICFG example_20.bpl [2021-04-29 04:05:59,157 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 04:05:59,161 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 04:05:59,162 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 04:05:59,805 INFO L149 ThreadInstanceAdder]: Constructed 400 joinOtherThreadTransitions. [2021-04-29 04:05:59,831 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-04-29 04:05:59,883 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 04:05:59,883 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 04:05:59,883 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 04:05:59,883 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 04:05:59,884 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 04:05:59,884 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 04:05:59,884 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 04:05:59,885 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 04:05:59,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 164 places, 483 transitions, 2266 flow