/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:52:05,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:52:05,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:52:05,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:52:05,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:52:05,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:52:05,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:52:05,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:52:05,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:52:05,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:52:05,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:52:05,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:52:05,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:52:05,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:52:05,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:52:05,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:52:05,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:52:05,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:52:05,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:52:05,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:52:05,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:52:05,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:52:05,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:52:05,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:52:05,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:52:05,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:52:05,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:52:05,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:52:05,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:52:05,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:52:05,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:52:05,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:52:05,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:52:05,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:52:05,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:52:05,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:52:05,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:52:05,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:52:05,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:52:05,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:52:05,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:52:05,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:52:06,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:52:06,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:52:06,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:52:06,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:52:06,021 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:52:06,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:52:06,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:52:06,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:52:06,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:52:06,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:52:06,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:52:06,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:52:06,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:52:06,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:52:06,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:52:06,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:52:06,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:52:06,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:52:06,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:52:06,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:52:06,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:52:06,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:52:06,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:52:06,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:52:06,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:52:06,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:52:06,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:52:06,027 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:52:06,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:52:06,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:52:06,028 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:52:06,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:52:06,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:52:06,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:52:06,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:52:06,361 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:52:06,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-10-16 13:52:06,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9da064013/d4bb5680fe634d599d28671cb231ea57/FLAGdac7a55f8 [2020-10-16 13:52:06,988 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:52:06,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-10-16 13:52:07,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9da064013/d4bb5680fe634d599d28671cb231ea57/FLAGdac7a55f8 [2020-10-16 13:52:07,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9da064013/d4bb5680fe634d599d28671cb231ea57 [2020-10-16 13:52:07,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:52:07,297 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:52:07,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:52:07,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:52:07,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:52:07,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:52:07" (1/1) ... [2020-10-16 13:52:07,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb26ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:07, skipping insertion in model container [2020-10-16 13:52:07,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:52:07" (1/1) ... [2020-10-16 13:52:07,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:52:07,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:52:07,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:52:07,852 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:52:07,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:52:08,015 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:52:08,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08 WrapperNode [2020-10-16 13:52:08,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:52:08,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:52:08,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:52:08,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:52:08,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:52:08,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:52:08,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:52:08,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:52:08,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:52:08,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:52:08,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:52:08,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:52:08,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 13:52:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-16 13:52:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-16 13:52:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:52:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:52:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:52:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:52:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:52:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:52:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:52:08,169 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:52:08,533 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:52:08,533 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-16 13:52:08,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:52:08 BoogieIcfgContainer [2020-10-16 13:52:08,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:52:08,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:52:08,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:52:08,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:52:08,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:52:07" (1/3) ... [2020-10-16 13:52:08,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1799ced2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:52:08, skipping insertion in model container [2020-10-16 13:52:08,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (2/3) ... [2020-10-16 13:52:08,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1799ced2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:52:08, skipping insertion in model container [2020-10-16 13:52:08,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:52:08" (3/3) ... [2020-10-16 13:52:08,548 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2020-10-16 13:52:08,560 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:52:08,560 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:52:08,567 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:52:08,568 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:52:08,616 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,617 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,617 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,617 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,618 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,618 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,619 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,619 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,619 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,619 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,620 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,620 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,620 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,620 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,621 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,621 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,621 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,622 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,622 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,622 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,622 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,623 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,623 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,624 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,624 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,624 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,624 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,625 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,625 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,625 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,630 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,630 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,631 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,631 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,631 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,631 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,632 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,632 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,632 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,632 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,633 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:08,636 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:52:08,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 13:52:08,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:52:08,668 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:52:08,668 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:52:08,668 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:52:08,668 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:52:08,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:52:08,668 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:52:08,669 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:52:08,681 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:52:08,682 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 86 transitions, 177 flow [2020-10-16 13:52:08,685 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 86 transitions, 177 flow [2020-10-16 13:52:08,687 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 86 transitions, 177 flow [2020-10-16 13:52:08,736 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2020-10-16 13:52:08,736 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:52:08,743 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 6/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2020-10-16 13:52:08,747 INFO L117 LiptonReduction]: Number of co-enabled transitions 2160 [2020-10-16 13:52:10,449 INFO L132 LiptonReduction]: Checked pairs total: 3001 [2020-10-16 13:52:10,449 INFO L134 LiptonReduction]: Total number of compositions: 98 [2020-10-16 13:52:10,460 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 35 flow [2020-10-16 13:52:10,469 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 38 states. [2020-10-16 13:52:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-16 13:52:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 13:52:10,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:10,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 13:52:10,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:10,486 INFO L82 PathProgramCache]: Analyzing trace with hash 11115006, now seen corresponding path program 1 times [2020-10-16 13:52:10,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:10,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855531494] [2020-10-16 13:52:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:10,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855531494] [2020-10-16 13:52:10,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:10,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:52:10,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1897729045] [2020-10-16 13:52:10,689 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:10,691 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:10,704 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 13:52:10,704 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:10,708 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:10,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:52:10,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:10,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:52:10,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:10,726 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-16 13:52:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:10,747 INFO L93 Difference]: Finished difference Result 36 states and 65 transitions. [2020-10-16 13:52:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:52:10,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 13:52:10,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:10,757 INFO L225 Difference]: With dead ends: 36 [2020-10-16 13:52:10,758 INFO L226 Difference]: Without dead ends: 15 [2020-10-16 13:52:10,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-16 13:52:10,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-16 13:52:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-16 13:52:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2020-10-16 13:52:10,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 4 [2020-10-16 13:52:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:10,791 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 21 transitions. [2020-10-16 13:52:10,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:52:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2020-10-16 13:52:10,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:52:10,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:10,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:10,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:52:10,793 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:10,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:10,793 INFO L82 PathProgramCache]: Analyzing trace with hash -642058695, now seen corresponding path program 1 times [2020-10-16 13:52:10,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:10,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725235732] [2020-10-16 13:52:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:10,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725235732] [2020-10-16 13:52:10,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:10,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:10,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [982527998] [2020-10-16 13:52:10,878 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:10,879 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:10,882 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2020-10-16 13:52:10,882 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:10,899 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:10,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:52:10,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:10,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:52:10,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:52:10,902 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. Second operand 4 states. [2020-10-16 13:52:10,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:10,922 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2020-10-16 13:52:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:52:10,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 13:52:10,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:10,924 INFO L225 Difference]: With dead ends: 17 [2020-10-16 13:52:10,924 INFO L226 Difference]: Without dead ends: 15 [2020-10-16 13:52:10,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-16 13:52:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-16 13:52:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-16 13:52:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-10-16 13:52:10,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2020-10-16 13:52:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:10,929 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-16 13:52:10,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:52:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-10-16 13:52:10,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:52:10,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:10,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:10,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:52:10,930 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:10,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1548037025, now seen corresponding path program 1 times [2020-10-16 13:52:10,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:10,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018917079] [2020-10-16 13:52:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:11,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018917079] [2020-10-16 13:52:11,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:11,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 13:52:11,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [882746375] [2020-10-16 13:52:11,028 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:11,029 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:11,033 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-16 13:52:11,034 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:11,069 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [292#(or (= |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| 0) (= 0 (+ ULTIMATE.start_BCSP_PnpAdd_~status~0 1))), 293#(or (= ~stoppingEvent~0 0) (= 0 (+ ULTIMATE.start_BCSP_PnpAdd_~status~0 1)))] [2020-10-16 13:52:11,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:52:11,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:11,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:52:11,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:52:11,070 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 9 states. [2020-10-16 13:52:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:11,203 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-10-16 13:52:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 13:52:11,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-16 13:52:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:11,206 INFO L225 Difference]: With dead ends: 20 [2020-10-16 13:52:11,206 INFO L226 Difference]: Without dead ends: 10 [2020-10-16 13:52:11,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-16 13:52:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-16 13:52:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-16 13:52:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-16 13:52:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-16 13:52:11,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-16 13:52:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:11,210 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-16 13:52:11,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:52:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-16 13:52:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:52:11,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:11,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:11,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:52:11,211 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:11,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:11,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1108178775, now seen corresponding path program 2 times [2020-10-16 13:52:11,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:11,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17876242] [2020-10-16 13:52:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:52:11,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17876242] [2020-10-16 13:52:11,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:11,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:52:11,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [304782833] [2020-10-16 13:52:11,282 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:11,282 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:11,284 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:52:11,284 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:11,285 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:11,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:11,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:11,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:11,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:11,286 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 5 states. [2020-10-16 13:52:11,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:11,306 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-10-16 13:52:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:52:11,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:52:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:11,307 INFO L225 Difference]: With dead ends: 6 [2020-10-16 13:52:11,307 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:52:11,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:52:11,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:52:11,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:52:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:52:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:52:11,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-16 13:52:11,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:11,310 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:52:11,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:11,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:52:11,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:52:11,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:52:11,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:52:11 BasicIcfg [2020-10-16 13:52:11,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:52:11,317 INFO L168 Benchmark]: Toolchain (without parser) took 4019.69 ms. Allocated memory was 138.9 MB in the beginning and 250.1 MB in the end (delta: 111.1 MB). Free memory was 99.5 MB in the beginning and 196.5 MB in the end (delta: -97.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,318 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.16 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 161.5 MB in the end (delta: -62.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.82 ms. Allocated memory is still 202.9 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,329 INFO L168 Benchmark]: Boogie Preprocessor took 28.82 ms. Allocated memory is still 202.9 MB. Free memory was 158.5 MB in the beginning and 157.5 MB in the end (delta: 984.9 kB). Peak memory consumption was 984.9 kB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,330 INFO L168 Benchmark]: RCFGBuilder took 441.36 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 131.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,330 INFO L168 Benchmark]: TraceAbstraction took 2774.15 ms. Allocated memory was 202.9 MB in the beginning and 250.1 MB in the end (delta: 47.2 MB). Free memory was 130.4 MB in the beginning and 196.5 MB in the end (delta: -66.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:52:11,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.16 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 161.5 MB in the end (delta: -62.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.82 ms. Allocated memory is still 202.9 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.82 ms. Allocated memory is still 202.9 MB. Free memory was 158.5 MB in the beginning and 157.5 MB in the end (delta: 984.9 kB). Peak memory consumption was 984.9 kB. Max. memory is 7.1 GB. * RCFGBuilder took 441.36 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 131.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2774.15 ms. Allocated memory was 202.9 MB in the beginning and 250.1 MB in the end (delta: 47.2 MB). Free memory was 130.4 MB in the beginning and 196.5 MB in the end (delta: -66.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1321 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 34 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 84 PlacesBefore, 17 PlacesAfterwards, 86 TransitionsBefore, 15 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 4 ChoiceCompositions, 98 TotalNumberOfCompositions, 3001 MoverChecksTotal - PositiveResult [Line: 679]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 34 SDtfs, 36 SDslu, 31 SDs, 0 SdLazy, 49 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 546 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...