/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=26.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b665a9c [2020-09-29 10:30:02,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-29 10:30:02,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-29 10:30:02,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-29 10:30:02,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-29 10:30:02,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-29 10:30:02,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-29 10:30:02,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-29 10:30:02,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-29 10:30:02,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-29 10:30:02,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-29 10:30:02,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-29 10:30:02,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-29 10:30:02,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-29 10:30:02,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-29 10:30:02,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-29 10:30:02,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-29 10:30:02,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-29 10:30:02,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-29 10:30:02,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-29 10:30:02,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-29 10:30:02,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-29 10:30:02,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-29 10:30:02,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-29 10:30:02,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-29 10:30:02,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-29 10:30:02,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-29 10:30:02,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-29 10:30:02,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-29 10:30:02,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-29 10:30:02,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-29 10:30:02,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-29 10:30:02,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-29 10:30:02,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-29 10:30:02,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-29 10:30:02,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-29 10:30:02,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-29 10:30:02,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-29 10:30:02,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-29 10:30:02,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-29 10:30:02,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-29 10:30:02,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-29 10:30:02,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-29 10:30:02,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-29 10:30:02,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-29 10:30:02,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-29 10:30:02,909 INFO L138 SettingsManager]: * Use SBE=true [2020-09-29 10:30:02,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-29 10:30:02,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-29 10:30:02,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-29 10:30:02,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-29 10:30:02,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-29 10:30:02,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-29 10:30:02,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-29 10:30:02,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-29 10:30:02,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-29 10:30:02,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-29 10:30:02,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-29 10:30:02,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-29 10:30:02,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-29 10:30:02,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-29 10:30:02,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-29 10:30:02,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-29 10:30:02,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-29 10:30:02,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-29 10:30:02,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-29 10:30:02,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-29 10:30:02,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-29 10:30:02,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-29 10:30:02,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-29 10:30:02,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-29 10:30:02,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-29 10:30:03,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-29 10:30:03,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-29 10:30:03,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-29 10:30:03,363 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-09-29 10:30:03,364 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-09-29 10:30:03,365 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=26.bpl [2020-09-29 10:30:03,366 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=26.bpl' [2020-09-29 10:30:03,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-29 10:30:03,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-29 10:30:03,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-29 10:30:03,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-29 10:30:03,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-29 10:30:03,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/1) ... [2020-09-29 10:30:03,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/1) ... [2020-09-29 10:30:03,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-29 10:30:03,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-29 10:30:03,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-29 10:30:03,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-29 10:30:03,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/1) ... [2020-09-29 10:30:03,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/1) ... [2020-09-29 10:30:03,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/1) ... [2020-09-29 10:30:03,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/1) ... [2020-09-29 10:30:03,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/1) ... [2020-09-29 10:30:03,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/1) ... [2020-09-29 10:30:03,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/1) ... [2020-09-29 10:30:03,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-29 10:30:03,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-29 10:30:03,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-29 10:30:03,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-29 10:30:03,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (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 [2020-09-29 10:30:03,610 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread25 given in one single declaration [2020-09-29 10:30:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread25 [2020-09-29 10:30:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread25 [2020-09-29 10:30:03,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread24 given in one single declaration [2020-09-29 10:30:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread24 [2020-09-29 10:30:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread24 [2020-09-29 10:30:03,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread26 given in one single declaration [2020-09-29 10:30:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread26 [2020-09-29 10:30:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread26 [2020-09-29 10:30:03,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread21 given in one single declaration [2020-09-29 10:30:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread21 [2020-09-29 10:30:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread21 [2020-09-29 10:30:03,615 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread20 given in one single declaration [2020-09-29 10:30:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread20 [2020-09-29 10:30:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread20 [2020-09-29 10:30:03,615 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread23 given in one single declaration [2020-09-29 10:30:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread23 [2020-09-29 10:30:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread23 [2020-09-29 10:30:03,616 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread22 given in one single declaration [2020-09-29 10:30:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure thread22 [2020-09-29 10:30:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread22 [2020-09-29 10:30:03,617 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread18 given in one single declaration [2020-09-29 10:30:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread18 [2020-09-29 10:30:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread18 [2020-09-29 10:30:03,618 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread17 given in one single declaration [2020-09-29 10:30:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread17 [2020-09-29 10:30:03,620 INFO L138 BoogieDeclarations]: Found implementation of procedure thread17 [2020-09-29 10:30:03,621 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread19 given in one single declaration [2020-09-29 10:30:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread19 [2020-09-29 10:30:03,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread19 [2020-09-29 10:30:03,621 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-09-29 10:30:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-29 10:30:03,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-29 10:30:03,622 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-09-29 10:30:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-29 10:30:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-29 10:30:03,623 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-09-29 10:30:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-09-29 10:30:03,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-09-29 10:30:03,624 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-09-29 10:30:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-09-29 10:30:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-09-29 10:30:03,624 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-09-29 10:30:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-09-29 10:30:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-09-29 10:30:03,625 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2020-09-29 10:30:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2020-09-29 10:30:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2020-09-29 10:30:03,626 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2020-09-29 10:30:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2020-09-29 10:30:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2020-09-29 10:30:03,626 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2020-09-29 10:30:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2020-09-29 10:30:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2020-09-29 10:30:03,627 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread9 given in one single declaration [2020-09-29 10:30:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread9 [2020-09-29 10:30:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread9 [2020-09-29 10:30:03,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread14 given in one single declaration [2020-09-29 10:30:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread14 [2020-09-29 10:30:03,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread14 [2020-09-29 10:30:03,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread13 given in one single declaration [2020-09-29 10:30:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread13 [2020-09-29 10:30:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread13 [2020-09-29 10:30:03,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-09-29 10:30:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-29 10:30:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-29 10:30:03,630 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread16 given in one single declaration [2020-09-29 10:30:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread16 [2020-09-29 10:30:03,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thread16 [2020-09-29 10:30:03,631 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread15 given in one single declaration [2020-09-29 10:30:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread15 [2020-09-29 10:30:03,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thread15 [2020-09-29 10:30:03,631 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread10 given in one single declaration [2020-09-29 10:30:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread10 [2020-09-29 10:30:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread10 [2020-09-29 10:30:03,632 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread12 given in one single declaration [2020-09-29 10:30:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread12 [2020-09-29 10:30:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread12 [2020-09-29 10:30:03,632 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread11 given in one single declaration [2020-09-29 10:30:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread11 [2020-09-29 10:30:03,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread11 [2020-09-29 10:30:03,634 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-29 10:30:04,049 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-29 10:30:04,050 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-09-29 10:30:04,055 INFO L202 PluginConnector]: Adding new model example2_N=26.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:30:04 BoogieIcfgContainer [2020-09-29 10:30:04,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-29 10:30:04,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-29 10:30:04,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-29 10:30:04,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-29 10:30:04,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:03" (1/2) ... [2020-09-29 10:30:04,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f22fae and model type example2_N=26.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 10:30:04, skipping insertion in model container [2020-09-29 10:30:04,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=26.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:30:04" (2/2) ... [2020-09-29 10:30:04,064 INFO L109 eAbstractionObserver]: Analyzing ICFG example2_N=26.bpl [2020-09-29 10:30:04,075 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-29 10:30:04,076 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-29 10:30:04,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-29 10:30:04,086 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-29 10:30:04,649 INFO L251 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2020-09-29 10:30:04,675 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-29 10:30:04,675 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-29 10:30:04,675 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-29 10:30:04,675 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-29 10:30:04,675 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-29 10:30:04,676 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-29 10:30:04,676 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-29 10:30:04,676 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-29 10:30:04,704 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 134 transitions, 476 flow [2020-09-29 10:30:04,706 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 187 places, 134 transitions, 476 flow [2020-09-29 10:30:04,808 INFO L129 PetriNetUnfolder]: 26/108 cut-off events. [2020-09-29 10:30:04,808 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-09-29 10:30:04,823 INFO L80 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 108 events. 26/108 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2020-09-29 10:30:04,833 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 187 places, 134 transitions, 476 flow [2020-09-29 10:30:04,892 INFO L129 PetriNetUnfolder]: 26/108 cut-off events. [2020-09-29 10:30:04,893 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-09-29 10:30:04,897 INFO L80 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 108 events. 26/108 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2020-09-29 10:30:04,904 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5200 [2020-09-29 10:30:04,905 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-29 10:30:05,081 INFO L206 etLargeBlockEncoding]: Checked pairs total: 0 [2020-09-29 10:30:05,082 INFO L214 etLargeBlockEncoding]: Total number of compositions: 1 [2020-09-29 10:30:05,086 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 186 places, 133 transitions, 474 flow