/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:54:44,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:54:44,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:54:44,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:54:44,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:54:44,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:54:44,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:54:44,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:54:44,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:54:44,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:54:44,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:54:44,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:54:44,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:54:44,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:54:44,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:54:44,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:54:44,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:54:44,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:54:44,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:54:44,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:54:44,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:54:44,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:54:44,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:54:44,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:54:44,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:54:44,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:54:44,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:54:44,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:54:44,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:54:44,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:54:44,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:54:44,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:54:44,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:54:44,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:54:44,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:54:44,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:54:44,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:54:44,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:54:44,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:54:44,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:54:44,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:54:44,615 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-SemanticLbe.epf [2020-04-17 21:54:44,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:54:44,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:54:44,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:54:44,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:54:44,646 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:54:44,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:54:44,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:54:44,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:54:44,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:54:44,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:54:44,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:54:44,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:54:44,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:54:44,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:54:44,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:54:44,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:54:44,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:54:44,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:54:44,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:54:44,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:54:44,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:54:44,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:54:44,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:54:44,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:54:44,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:54:44,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:54:44,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:54:44,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:54:44,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:54:44,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:54:44,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:54:44,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:54:44,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:54:44,946 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:54:44,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-04-17 21:54:45,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f590dcdfb/ed0215b57e31459897f12e06e5cceaf7/FLAG6c45d8364 [2020-04-17 21:54:45,582 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:54:45,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-04-17 21:54:45,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f590dcdfb/ed0215b57e31459897f12e06e5cceaf7/FLAG6c45d8364 [2020-04-17 21:54:45,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f590dcdfb/ed0215b57e31459897f12e06e5cceaf7 [2020-04-17 21:54:45,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:54:45,900 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:54:45,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:54:45,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:54:45,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:54:45,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:54:45" (1/1) ... [2020-04-17 21:54:45,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d48360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:45, skipping insertion in model container [2020-04-17 21:54:45,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:54:45" (1/1) ... [2020-04-17 21:54:45,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:54:45,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:54:46,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:54:46,426 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:54:46,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:54:46,579 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:54:46,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46 WrapperNode [2020-04-17 21:54:46,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:54:46,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:54:46,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:54:46,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:54:46,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... [2020-04-17 21:54:46,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... [2020-04-17 21:54:46,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:54:46,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:54:46,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:54:46,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:54:46,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... [2020-04-17 21:54:46,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... [2020-04-17 21:54:46,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... [2020-04-17 21:54:46,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... [2020-04-17 21:54:46,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... [2020-04-17 21:54:46,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... [2020-04-17 21:54:46,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... [2020-04-17 21:54:46,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:54:46,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:54:46,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:54:46,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:54:46,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:54:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:54:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:54:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:54:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:54:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:54:46,754 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:54:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:54:46,754 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:54:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:54:46,755 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:54:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:54:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:54:46,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:54:46,757 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 21:54:47,140 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:54:47,141 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:54:47,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:54:47 BoogieIcfgContainer [2020-04-17 21:54:47,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:54:47,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:54:47,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:54:47,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:54:47,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:54:45" (1/3) ... [2020-04-17 21:54:47,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151080ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:54:47, skipping insertion in model container [2020-04-17 21:54:47,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:46" (2/3) ... [2020-04-17 21:54:47,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151080ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:54:47, skipping insertion in model container [2020-04-17 21:54:47,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:54:47" (3/3) ... [2020-04-17 21:54:47,158 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_tso.oepc.i [2020-04-17 21:54:47,169 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:54:47,170 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:54:47,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:54:47,178 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:54:47,209 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,209 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,209 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,210 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,211 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,211 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,211 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,212 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,212 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,212 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,213 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,213 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,213 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,214 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,214 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,214 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,215 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,215 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,219 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,220 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,220 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,220 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,227 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,227 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,228 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,228 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,231 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,231 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,231 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,232 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:47,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:54:47,271 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:54:47,272 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:54:47,272 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:54:47,272 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:54:47,272 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:54:47,273 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:54:47,273 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:54:47,273 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:54:47,291 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-17 21:54:47,295 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 21:54:47,361 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 21:54:47,361 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:54:47,367 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:54:47,369 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 21:54:47,391 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 21:54:47,391 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:54:47,392 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:54:47,394 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:54:47,395 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:54:48,947 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 21:54:49,056 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-17 21:54:49,056 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 21:54:49,060 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 21:54:49,088 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 21:54:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 21:54:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:54:49,098 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:49,099 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:49,100 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:49,106 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-17 21:54:49,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:49,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956408721] [2020-04-17 21:54:49,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:49,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956408721] [2020-04-17 21:54:49,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:49,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:54:49,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747346834] [2020-04-17 21:54:49,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 21:54:49,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:49,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 21:54:49,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 21:54:49,340 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 21:54:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:49,389 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 21:54:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 21:54:49,391 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 21:54:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:49,436 INFO L225 Difference]: With dead ends: 362 [2020-04-17 21:54:49,436 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 21:54:49,438 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 21:54:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 21:54:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 21:54:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 21:54:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 21:54:49,528 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 21:54:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:49,529 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 21:54:49,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 21:54:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 21:54:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:54:49,531 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:49,531 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:49,531 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:49,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:49,532 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-17 21:54:49,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:49,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778480962] [2020-04-17 21:54:49,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:49,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778480962] [2020-04-17 21:54:49,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:49,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:54:49,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422748589] [2020-04-17 21:54:49,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:54:49,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:49,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:54:49,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:54:49,682 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-17 21:54:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:49,716 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 21:54:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:54:49,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 21:54:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:49,720 INFO L225 Difference]: With dead ends: 330 [2020-04-17 21:54:49,720 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 21:54:49,721 INFO L678 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 [2020-04-17 21:54:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 21:54:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 21:54:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 21:54:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 21:54:49,751 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 21:54:49,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:49,751 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 21:54:49,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:54:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 21:54:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:54:49,753 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:49,753 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:49,754 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:49,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 1 times [2020-04-17 21:54:49,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:49,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390367025] [2020-04-17 21:54:49,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:49,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390367025] [2020-04-17 21:54:49,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:49,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:54:49,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666830462] [2020-04-17 21:54:49,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:54:49,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:49,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:54:49,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:54:49,889 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-04-17 21:54:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:50,012 INFO L93 Difference]: Finished difference Result 350 states and 940 transitions. [2020-04-17 21:54:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 21:54:50,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-17 21:54:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:50,017 INFO L225 Difference]: With dead ends: 350 [2020-04-17 21:54:50,017 INFO L226 Difference]: Without dead ends: 182 [2020-04-17 21:54:50,017 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 21:54:50,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-17 21:54:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-17 21:54:50,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-17 21:54:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 458 transitions. [2020-04-17 21:54:50,026 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 458 transitions. Word has length 10 [2020-04-17 21:54:50,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:50,027 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 458 transitions. [2020-04-17 21:54:50,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:54:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 458 transitions. [2020-04-17 21:54:50,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:54:50,028 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:50,029 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:50,029 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:50,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1670897012, now seen corresponding path program 1 times [2020-04-17 21:54:50,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:50,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399712195] [2020-04-17 21:54:50,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:50,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399712195] [2020-04-17 21:54:50,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:50,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:54:50,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242764510] [2020-04-17 21:54:50,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:54:50,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:50,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:54:50,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:54:50,084 INFO L87 Difference]: Start difference. First operand 182 states and 458 transitions. Second operand 4 states. [2020-04-17 21:54:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:50,101 INFO L93 Difference]: Finished difference Result 194 states and 472 transitions. [2020-04-17 21:54:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:54:50,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 21:54:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:50,103 INFO L225 Difference]: With dead ends: 194 [2020-04-17 21:54:50,103 INFO L226 Difference]: Without dead ends: 170 [2020-04-17 21:54:50,103 INFO L678 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 [2020-04-17 21:54:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-17 21:54:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-17 21:54:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-17 21:54:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 420 transitions. [2020-04-17 21:54:50,111 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 420 transitions. Word has length 12 [2020-04-17 21:54:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:50,111 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 420 transitions. [2020-04-17 21:54:50,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:54:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 420 transitions. [2020-04-17 21:54:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:54:50,113 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:50,113 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:50,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:50,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:50,114 INFO L82 PathProgramCache]: Analyzing trace with hash 257080554, now seen corresponding path program 1 times [2020-04-17 21:54:50,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:50,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474121578] [2020-04-17 21:54:50,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:50,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474121578] [2020-04-17 21:54:50,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:50,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:54:50,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379640238] [2020-04-17 21:54:50,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:54:50,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:50,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:54:50,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:54:50,198 INFO L87 Difference]: Start difference. First operand 170 states and 420 transitions. Second operand 5 states. [2020-04-17 21:54:50,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:50,256 INFO L93 Difference]: Finished difference Result 194 states and 469 transitions. [2020-04-17 21:54:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:54:50,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 21:54:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:50,259 INFO L225 Difference]: With dead ends: 194 [2020-04-17 21:54:50,259 INFO L226 Difference]: Without dead ends: 98 [2020-04-17 21:54:50,259 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 21:54:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-17 21:54:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-04-17 21:54:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-04-17 21:54:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-04-17 21:54:50,267 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-04-17 21:54:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:50,268 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-04-17 21:54:50,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:54:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-04-17 21:54:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:54:50,274 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:50,274 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:50,274 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:50,275 INFO L82 PathProgramCache]: Analyzing trace with hash -647415272, now seen corresponding path program 1 times [2020-04-17 21:54:50,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:50,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583175663] [2020-04-17 21:54:50,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:50,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583175663] [2020-04-17 21:54:50,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:50,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:54:50,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077312704] [2020-04-17 21:54:50,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:54:50,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:50,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:54:50,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:54:50,367 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 5 states. [2020-04-17 21:54:50,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:50,416 INFO L93 Difference]: Finished difference Result 86 states and 186 transitions. [2020-04-17 21:54:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:54:50,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 21:54:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:50,419 INFO L225 Difference]: With dead ends: 86 [2020-04-17 21:54:50,419 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:54:50,420 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 21:54:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:54:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:54:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:54:50,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:54:50,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 21:54:50,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:50,421 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:54:50,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:54:50,421 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:54:50,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:54:50,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:54:50 BasicIcfg [2020-04-17 21:54:50,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:54:50,433 INFO L168 Benchmark]: Toolchain (without parser) took 4552.66 ms. Allocated memory was 137.9 MB in the beginning and 248.0 MB in the end (delta: 110.1 MB). Free memory was 99.6 MB in the beginning and 204.9 MB in the end (delta: -105.3 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:50,434 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 21:54:50,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.59 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 97.7 MB in the beginning and 159.5 MB in the end (delta: -61.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:50,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.55 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:50,441 INFO L168 Benchmark]: Boogie Preprocessor took 28.06 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:50,441 INFO L168 Benchmark]: RCFGBuilder took 464.30 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 133.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:50,443 INFO L168 Benchmark]: TraceAbstraction took 3281.53 ms. Allocated memory was 202.9 MB in the beginning and 248.0 MB in the end (delta: 45.1 MB). Free memory was 133.0 MB in the beginning and 204.9 MB in the end (delta: -71.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:54:50,451 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.59 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 97.7 MB in the beginning and 159.5 MB in the end (delta: -61.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.55 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.06 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.30 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 133.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3281.53 ms. Allocated memory was 202.9 MB in the beginning and 248.0 MB in the end (delta: 45.1 MB). Free memory was 133.0 MB in the beginning and 204.9 MB in the end (delta: -71.9 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 LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 127 SDtfs, 160 SDslu, 180 SDs, 0 SdLazy, 68 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...