/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 16:42:46,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 16:42:46,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 16:42:46,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 16:42:46,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 16:42:46,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 16:42:46,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 16:42:46,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 16:42:46,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 16:42:46,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 16:42:46,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 16:42:46,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 16:42:46,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 16:42:46,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 16:42:46,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 16:42:46,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 16:42:46,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 16:42:46,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 16:42:46,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 16:42:46,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 16:42:46,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 16:42:46,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 16:42:46,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 16:42:46,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 16:42:46,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 16:42:46,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 16:42:46,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 16:42:46,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 16:42:46,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 16:42:46,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 16:42:46,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 16:42:46,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 16:42:46,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 16:42:46,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 16:42:46,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 16:42:46,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 16:42:46,926 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 [2020-10-15 16:42:46,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 16:42:46,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 16:42:46,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 16:42:46,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 16:42:46,971 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 16:42:46,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 16:42:46,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 16:42:46,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 16:42:46,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 16:42:46,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 16:42:46,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 16:42:46,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 16:42:46,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 16:42:46,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 16:42:46,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 16:42:46,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 16:42:46,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 16:42:46,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 16:42:46,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 16:42:46,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 16:42:46,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 16:42:46,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 16:42:46,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 16:42:46,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 16:42:46,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 16:42:46,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 16:42:46,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 16:42:46,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 16:42:46,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 16:42:46,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 16:42:47,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 16:42:47,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 16:42:47,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 16:42:47,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 16:42:47,304 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 16:42:47,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-10-15 16:42:47,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661c1db54/1dfd9cbe4ded404f8c78bacbc6cc5bbe/FLAG4ee81b9c8 [2020-10-15 16:42:47,975 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 16:42:47,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-10-15 16:42:47,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661c1db54/1dfd9cbe4ded404f8c78bacbc6cc5bbe/FLAG4ee81b9c8 [2020-10-15 16:42:48,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661c1db54/1dfd9cbe4ded404f8c78bacbc6cc5bbe [2020-10-15 16:42:48,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 16:42:48,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 16:42:48,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 16:42:48,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 16:42:48,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 16:42:48,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d57e0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48, skipping insertion in model container [2020-10-15 16:42:48,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 16:42:48,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 16:42:48,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 16:42:48,784 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 16:42:48,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 16:42:48,905 INFO L208 MainTranslator]: Completed translation [2020-10-15 16:42:48,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48 WrapperNode [2020-10-15 16:42:48,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 16:42:48,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 16:42:48,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 16:42:48,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 16:42:48,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 16:42:48,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 16:42:48,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 16:42:48,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 16:42:48,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (1/1) ... [2020-10-15 16:42:48,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 16:42:48,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 16:42:48,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 16:42:48,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 16:42:48,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (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 [2020-10-15 16:42:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 16:42:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 16:42:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 16:42:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 16:42:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2020-10-15 16:42:49,065 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2020-10-15 16:42:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2020-10-15 16:42:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2020-10-15 16:42:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 16:42:49,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 16:42:49,068 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 16:42:49,606 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 16:42:49,607 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-15 16:42:49,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:49 BoogieIcfgContainer [2020-10-15 16:42:49,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 16:42:49,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 16:42:49,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 16:42:49,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 16:42:49,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:42:48" (1/3) ... [2020-10-15 16:42:49,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ff2ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:42:49, skipping insertion in model container [2020-10-15 16:42:49,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:48" (2/3) ... [2020-10-15 16:42:49,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ff2ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:42:49, skipping insertion in model container [2020-10-15 16:42:49,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:49" (3/3) ... [2020-10-15 16:42:49,618 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2020-10-15 16:42:49,630 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 16:42:49,630 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 16:42:49,638 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-15 16:42:49,639 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 16:42:49,663 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,663 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,663 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,664 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,664 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,664 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,665 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,665 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,665 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,665 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,666 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,666 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,671 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,671 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,671 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,672 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,678 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,678 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,678 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,678 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:49,698 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 16:42:49,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 16:42:49,720 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 16:42:49,721 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 16:42:49,721 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 16:42:49,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 16:42:49,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 16:42:49,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 16:42:49,721 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 16:42:49,737 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 16:42:49,740 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 118 transitions, 258 flow [2020-10-15 16:42:49,743 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 118 transitions, 258 flow [2020-10-15 16:42:49,745 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 111 places, 118 transitions, 258 flow [2020-10-15 16:42:49,805 INFO L129 PetriNetUnfolder]: 13/118 cut-off events. [2020-10-15 16:42:49,805 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-15 16:42:49,810 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 118 events. 13/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2020-10-15 16:42:49,813 INFO L117 LiptonReduction]: Number of co-enabled transitions 280 [2020-10-15 16:42:52,155 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-10-15 16:42:52,504 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-10-15 16:42:52,875 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-10-15 16:42:54,593 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-15 16:42:55,045 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-15 16:42:55,687 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-15 16:42:55,998 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-15 16:42:57,436 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-15 16:42:57,780 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-15 16:42:59,520 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-15 16:43:00,036 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-15 16:43:05,715 WARN L193 SmtUtils]: Spent 5.68 s on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-15 16:43:07,764 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 59 [2020-10-15 16:43:08,697 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-15 16:43:09,337 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-15 16:43:09,453 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-15 16:43:09,569 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-15 16:43:09,920 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-15 16:43:10,041 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-15 16:43:10,158 INFO L132 LiptonReduction]: Checked pairs total: 1097 [2020-10-15 16:43:10,158 INFO L134 LiptonReduction]: Total number of compositions: 130 [2020-10-15 16:43:10,165 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2020-10-15 16:43:10,179 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 72 states. [2020-10-15 16:43:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-15 16:43:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 16:43:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:43:10,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:43:10,192 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 16:43:10,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:43:10,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1948892377, now seen corresponding path program 1 times [2020-10-15 16:43:10,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:43:10,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587935585] [2020-10-15 16:43:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:43:10,369 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-15 16:43:10,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091906948] [2020-10-15 16:43:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown