/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:20:54,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:20:54,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:20:54,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:20:54,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:20:54,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:20:54,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:20:54,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:20:54,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:20:54,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:20:54,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:20:54,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:20:54,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:20:54,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:20:54,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:20:54,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:20:54,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:20:54,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:20:54,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:20:54,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:20:54,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:20:54,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:20:54,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:20:54,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:20:54,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 22:20:54,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 22:20:54,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 22:20:54,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 22:20:54,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 22:20:54,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 22:20:54,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:20:54,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:20:54,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:20:54,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:20:54,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:20:54,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:20:54,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:20:54,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:20:54,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:20:54,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:20:54,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:20:54,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-18 22:20:54,246 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:20:54,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:20:54,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:20:54,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:20:54,248 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:20:54,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:20:54,248 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:20:54,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:20:54,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:20:54,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:20:54,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:20:54,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:20:54,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:20:54,251 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:20:54,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:20:54,252 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:20:54,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:20:54,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:20:54,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:20:54,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:20:54,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:20:54,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:20:54,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:20:54,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:20:54,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:20:54,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:20:54,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:20:54,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:20:54,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:20:54,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:20:54,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:20:54,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:20:54,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:20:54,588 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:20:54,589 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:20:54,589 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2019-12-18 22:20:54,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f58138661/befc39ac391a48c3bfaca64ee9b01f0b/FLAG8ff54fc37 [2019-12-18 22:20:55,197 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:20:55,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2019-12-18 22:20:55,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f58138661/befc39ac391a48c3bfaca64ee9b01f0b/FLAG8ff54fc37 [2019-12-18 22:20:55,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f58138661/befc39ac391a48c3bfaca64ee9b01f0b [2019-12-18 22:20:55,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:20:55,541 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:20:55,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:20:55,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:20:55,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:20:55,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:20:55" (1/1) ... [2019-12-18 22:20:55,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255312cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:55, skipping insertion in model container [2019-12-18 22:20:55,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:20:55" (1/1) ... [2019-12-18 22:20:55,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:20:55,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:20:56,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:20:56,087 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:20:56,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:20:56,223 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:20:56,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56 WrapperNode [2019-12-18 22:20:56,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:20:56,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:20:56,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:20:56,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:20:56,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (1/1) ... [2019-12-18 22:20:56,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (1/1) ... [2019-12-18 22:20:56,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:20:56,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:20:56,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:20:56,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:20:56,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (1/1) ... [2019-12-18 22:20:56,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (1/1) ... [2019-12-18 22:20:56,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (1/1) ... [2019-12-18 22:20:56,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (1/1) ... [2019-12-18 22:20:56,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (1/1) ... [2019-12-18 22:20:56,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (1/1) ... [2019-12-18 22:20:56,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (1/1) ... [2019-12-18 22:20:56,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:20:56,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:20:56,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:20:56,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:20:56,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (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 [2019-12-18 22:20:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:20:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:20:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:20:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:20:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:20:56,376 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:20:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:20:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:20:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:20:56,378 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:20:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:20:56,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:20:56,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:20:56,380 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 22:20:56,775 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:20:56,776 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:20:56,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:20:56 BoogieIcfgContainer [2019-12-18 22:20:56,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:20:56,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:20:56,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:20:56,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:20:56,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:20:55" (1/3) ... [2019-12-18 22:20:56,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dee487c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:20:56, skipping insertion in model container [2019-12-18 22:20:56,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:20:56" (2/3) ... [2019-12-18 22:20:56,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dee487c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:20:56, skipping insertion in model container [2019-12-18 22:20:56,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:20:56" (3/3) ... [2019-12-18 22:20:56,786 INFO L109 eAbstractionObserver]: Analyzing ICFG safe003_tso.oepc.i [2019-12-18 22:20:56,797 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:20:56,797 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:20:56,805 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:20:56,806 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:20:56,833 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,833 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,833 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,835 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,835 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,836 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,837 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,837 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,837 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,838 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,839 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,839 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,839 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,839 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,840 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,840 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,847 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,848 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,849 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,850 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,857 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,857 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,858 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,858 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,860 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,860 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,861 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,861 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:20:56,882 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:20:56,906 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:20:56,906 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:20:56,907 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:20:56,907 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:20:56,907 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:20:56,908 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:20:56,908 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:20:56,908 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:20:56,928 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-18 22:20:56,930 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:20:57,000 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:20:57,000 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:20:57,007 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:20:57,010 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:20:57,027 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:20:57,027 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:20:57,028 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:20:57,030 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:20:57,032 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:20:58,104 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2019-12-18 22:20:58,409 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-18 22:20:58,478 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-18 22:20:58,479 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-18 22:20:58,483 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-18 22:20:58,492 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-18 22:20:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-18 22:20:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:20:58,500 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:20:58,501 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:20:58,502 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:20:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:20:58,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-18 22:20:58,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:20:58,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311415496] [2019-12-18 22:20:58,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:20:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:20:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:20:58,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311415496] [2019-12-18 22:20:58,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:20:58,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:20:58,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147440765] [2019-12-18 22:20:58,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:20:58,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:20:58,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:20:58,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:20:58,762 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2019-12-18 22:20:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:20:58,799 INFO L93 Difference]: Finished difference Result 50 states and 104 transitions. [2019-12-18 22:20:58,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:20:58,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:20:58,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:20:58,813 INFO L225 Difference]: With dead ends: 50 [2019-12-18 22:20:58,813 INFO L226 Difference]: Without dead ends: 34 [2019-12-18 22:20:58,815 INFO L631 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 [2019-12-18 22:20:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-18 22:20:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-18 22:20:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 22:20:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-18 22:20:58,862 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-18 22:20:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:20:58,864 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-18 22:20:58,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:20:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-18 22:20:58,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:20:58,866 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:20:58,867 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:20:58,867 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:20:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:20:58,867 INFO L82 PathProgramCache]: Analyzing trace with hash 90665039, now seen corresponding path program 1 times [2019-12-18 22:20:58,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:20:58,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355379110] [2019-12-18 22:20:58,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:20:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:20:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:20:58,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355379110] [2019-12-18 22:20:58,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:20:58,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:20:58,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015116373] [2019-12-18 22:20:58,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:20:58,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:20:58,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:20:58,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:20:58,996 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-18 22:20:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:20:59,023 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2019-12-18 22:20:59,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:20:59,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 22:20:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:20:59,024 INFO L225 Difference]: With dead ends: 39 [2019-12-18 22:20:59,024 INFO L226 Difference]: Without dead ends: 31 [2019-12-18 22:20:59,025 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:20:59,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-18 22:20:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-18 22:20:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-18 22:20:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2019-12-18 22:20:59,030 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 9 [2019-12-18 22:20:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:20:59,031 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2019-12-18 22:20:59,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:20:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2019-12-18 22:20:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:20:59,032 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:20:59,032 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:20:59,032 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:20:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:20:59,032 INFO L82 PathProgramCache]: Analyzing trace with hash 400560283, now seen corresponding path program 1 times [2019-12-18 22:20:59,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:20:59,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584030973] [2019-12-18 22:20:59,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:20:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:20:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:20:59,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584030973] [2019-12-18 22:20:59,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:20:59,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:20:59,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485433572] [2019-12-18 22:20:59,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:20:59,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:20:59,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:20:59,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:20:59,091 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 3 states. [2019-12-18 22:20:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:20:59,096 INFO L93 Difference]: Finished difference Result 30 states and 52 transitions. [2019-12-18 22:20:59,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:20:59,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 22:20:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:20:59,098 INFO L225 Difference]: With dead ends: 30 [2019-12-18 22:20:59,098 INFO L226 Difference]: Without dead ends: 30 [2019-12-18 22:20:59,099 INFO L631 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 [2019-12-18 22:20:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-18 22:20:59,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-18 22:20:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-18 22:20:59,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 52 transitions. [2019-12-18 22:20:59,104 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 52 transitions. Word has length 10 [2019-12-18 22:20:59,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:20:59,104 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 52 transitions. [2019-12-18 22:20:59,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:20:59,104 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 52 transitions. [2019-12-18 22:20:59,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:20:59,105 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:20:59,105 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:20:59,105 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:20:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:20:59,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1542654109, now seen corresponding path program 1 times [2019-12-18 22:20:59,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:20:59,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038356307] [2019-12-18 22:20:59,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:20:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:20:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:20:59,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038356307] [2019-12-18 22:20:59,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:20:59,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:20:59,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174309490] [2019-12-18 22:20:59,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:20:59,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:20:59,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:20:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:20:59,171 INFO L87 Difference]: Start difference. First operand 30 states and 52 transitions. Second operand 4 states. [2019-12-18 22:20:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:20:59,192 INFO L93 Difference]: Finished difference Result 35 states and 56 transitions. [2019-12-18 22:20:59,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:20:59,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-18 22:20:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:20:59,193 INFO L225 Difference]: With dead ends: 35 [2019-12-18 22:20:59,194 INFO L226 Difference]: Without dead ends: 23 [2019-12-18 22:20:59,194 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:20:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-18 22:20:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-18 22:20:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-18 22:20:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2019-12-18 22:20:59,198 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 10 [2019-12-18 22:20:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:20:59,198 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2019-12-18 22:20:59,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:20:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2019-12-18 22:20:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:20:59,199 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:20:59,199 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:20:59,199 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:20:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:20:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-12-18 22:20:59,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:20:59,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222997977] [2019-12-18 22:20:59,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:20:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:20:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:20:59,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222997977] [2019-12-18 22:20:59,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:20:59,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:20:59,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969872341] [2019-12-18 22:20:59,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:20:59,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:20:59,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:20:59,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:20:59,252 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand 3 states. [2019-12-18 22:20:59,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:20:59,260 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2019-12-18 22:20:59,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:20:59,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-18 22:20:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:20:59,261 INFO L225 Difference]: With dead ends: 22 [2019-12-18 22:20:59,261 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:20:59,262 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:20:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:20:59,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:20:59,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:20:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:20:59,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:20:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:20:59,263 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:20:59,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:20:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:20:59,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:20:59,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:20:59 BasicIcfg [2019-12-18 22:20:59,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:20:59,269 INFO L168 Benchmark]: Toolchain (without parser) took 3728.51 ms. Allocated memory was 144.7 MB in the beginning and 241.2 MB in the end (delta: 96.5 MB). Free memory was 104.0 MB in the beginning and 140.5 MB in the end (delta: -36.5 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:20:59,270 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 22:20:59,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.55 ms. Allocated memory was 144.7 MB in the beginning and 205.5 MB in the end (delta: 60.8 MB). Free memory was 103.6 MB in the beginning and 162.7 MB in the end (delta: -59.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-12-18 22:20:59,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 205.5 MB. Free memory was 162.7 MB in the beginning and 160.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-18 22:20:59,273 INFO L168 Benchmark]: Boogie Preprocessor took 34.98 ms. Allocated memory is still 205.5 MB. Free memory was 160.0 MB in the beginning and 159.1 MB in the end (delta: 884.7 kB). Peak memory consumption was 884.7 kB. Max. memory is 7.1 GB. [2019-12-18 22:20:59,274 INFO L168 Benchmark]: RCFGBuilder took 465.66 ms. Allocated memory is still 205.5 MB. Free memory was 159.1 MB in the beginning and 138.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-12-18 22:20:59,275 INFO L168 Benchmark]: TraceAbstraction took 2488.86 ms. Allocated memory was 205.5 MB in the beginning and 241.2 MB in the end (delta: 35.7 MB). Free memory was 138.4 MB in the beginning and 140.5 MB in the end (delta: -2.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2019-12-18 22:20:59,279 INFO L335 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 144.7 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.55 ms. Allocated memory was 144.7 MB in the beginning and 205.5 MB in the end (delta: 60.8 MB). Free memory was 103.6 MB in the beginning and 162.7 MB in the end (delta: -59.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 205.5 MB. Free memory was 162.7 MB in the beginning and 160.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.98 ms. Allocated memory is still 205.5 MB. Free memory was 160.0 MB in the beginning and 159.1 MB in the end (delta: 884.7 kB). Peak memory consumption was 884.7 kB. Max. memory is 7.1 GB. * RCFGBuilder took 465.66 ms. Allocated memory is still 205.5 MB. Free memory was 159.1 MB in the beginning and 138.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2488.86 ms. Allocated memory was 205.5 MB in the beginning and 241.2 MB in the end (delta: 35.7 MB). Free memory was 138.4 MB in the beginning and 140.5 MB in the end (delta: -2.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 478 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 28 SDslu, 34 SDs, 0 SdLazy, 22 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...