/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/safe010_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:59:44,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:59:44,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:59:44,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:59:44,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:59:44,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:59:44,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:59:44,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:59:44,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:59:44,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:59:44,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:59:44,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:59:44,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:59:44,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:59:44,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:59:44,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:59:44,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:59:44,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:59:44,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:59:44,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:59:44,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:59:44,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:59:44,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:59:44,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:59:44,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:59:44,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:59:44,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:59:44,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:59:44,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:59:44,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:59:44,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:59:44,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:59:44,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:59:44,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:59:44,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:59:44,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:59:44,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:59:44,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:59:44,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:59:44,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:59:44,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:59:44,696 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 21:59:44,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:59:44,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:59:44,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:59:44,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:59:44,730 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:59:44,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:59:44,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:59:44,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:59:44,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:59:44,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:59:44,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:59:44,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:59:44,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:59:44,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:59:44,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:59:44,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:59:44,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:59:44,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:59:44,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:59:44,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:59:44,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:59:44,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:59:44,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:59:44,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:59:44,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:59:44,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:59:44,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:59:44,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:59:44,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:59:45,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:59:45,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:59:45,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:59:45,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:59:45,056 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:59:45,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-04-17 21:59:45,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f03bc5de/6204ab0fc001424db6c609eb55e40956/FLAG4179501b0 [2020-04-17 21:59:45,763 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:59:45,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-04-17 21:59:45,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f03bc5de/6204ab0fc001424db6c609eb55e40956/FLAG4179501b0 [2020-04-17 21:59:45,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f03bc5de/6204ab0fc001424db6c609eb55e40956 [2020-04-17 21:59:45,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:59:45,996 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:59:45,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:59:45,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:59:46,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:59:46,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:59:45" (1/1) ... [2020-04-17 21:59:46,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5162adf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46, skipping insertion in model container [2020-04-17 21:59:46,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:59:45" (1/1) ... [2020-04-17 21:59:46,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:59:46,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:59:46,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:59:46,532 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:59:46,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:59:46,685 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:59:46,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46 WrapperNode [2020-04-17 21:59:46,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:59:46,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:59:46,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:59:46,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:59:46,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (1/1) ... [2020-04-17 21:59:46,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (1/1) ... [2020-04-17 21:59:46,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:59:46,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:59:46,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:59:46,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:59:46,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (1/1) ... [2020-04-17 21:59:46,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (1/1) ... [2020-04-17 21:59:46,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (1/1) ... [2020-04-17 21:59:46,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (1/1) ... [2020-04-17 21:59:46,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (1/1) ... [2020-04-17 21:59:46,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (1/1) ... [2020-04-17 21:59:46,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (1/1) ... [2020-04-17 21:59:46,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:59:46,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:59:46,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:59:46,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:59:46,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (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 21:59:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:59:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:59:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:59:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:59:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:59:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:59:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:59:46,867 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 21:59:47,241 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:59:47,241 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:59:47,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:59:47 BoogieIcfgContainer [2020-04-17 21:59:47,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:59:47,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:59:47,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:59:47,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:59:47,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:59:45" (1/3) ... [2020-04-17 21:59:47,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b7fd68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:59:47, skipping insertion in model container [2020-04-17 21:59:47,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:59:46" (2/3) ... [2020-04-17 21:59:47,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b7fd68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:59:47, skipping insertion in model container [2020-04-17 21:59:47,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:59:47" (3/3) ... [2020-04-17 21:59:47,259 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2020-04-17 21:59:47,272 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:59:47,273 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:59:47,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:59:47,280 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:59:47,302 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,302 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,303 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,303 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,303 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,304 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,304 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,305 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,305 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,305 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,305 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,306 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,310 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,310 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,310 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,311 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,320 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,321 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,321 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,321 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:59:47,335 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 21:59:47,351 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:59:47,352 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:59:47,352 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:59:47,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:59:47,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:59:47,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:59:47,352 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:59:47,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:59:47,366 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-17 21:59:47,368 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-17 21:59:47,404 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-17 21:59:47,405 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:59:47,409 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 21:59:47,412 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-17 21:59:47,431 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-17 21:59:47,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:59:47,432 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 21:59:47,434 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-17 21:59:47,435 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:59:49,041 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-04-17 21:59:49,041 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-17 21:59:49,045 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-17 21:59:49,058 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-17 21:59:49,060 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-17 21:59:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 21:59:49,066 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:59:49,067 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 21:59:49,067 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:59:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:59:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-04-17 21:59:49,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:59:49,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711964926] [2020-04-17 21:59:49,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:59:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:59:49,261 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 21:59:49,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711964926] [2020-04-17 21:59:49,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:59:49,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:59:49,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172544791] [2020-04-17 21:59:49,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:59:49,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:59:49,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:59:49,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:59:49,280 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-17 21:59:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:59:49,318 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-17 21:59:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:59:49,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 21:59:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:59:49,350 INFO L225 Difference]: With dead ends: 72 [2020-04-17 21:59:49,350 INFO L226 Difference]: Without dead ends: 56 [2020-04-17 21:59:49,351 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:59:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-17 21:59:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-17 21:59:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-17 21:59:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-17 21:59:49,413 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-17 21:59:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:59:49,413 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-17 21:59:49,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:59:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-17 21:59:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-17 21:59:49,415 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:59:49,415 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:59:49,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:59:49,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:59:49,417 INFO L82 PathProgramCache]: Analyzing trace with hash 417556795, now seen corresponding path program 1 times [2020-04-17 21:59:49,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:59:49,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648583765] [2020-04-17 21:59:49,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:59:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:59:49,512 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 21:59:49,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648583765] [2020-04-17 21:59:49,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:59:49,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:59:49,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161772123] [2020-04-17 21:59:49,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:59:49,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:59:49,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:59:49,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:59:49,515 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-04-17 21:59:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:59:49,521 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-04-17 21:59:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:59:49,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-17 21:59:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:59:49,522 INFO L225 Difference]: With dead ends: 53 [2020-04-17 21:59:49,522 INFO L226 Difference]: Without dead ends: 53 [2020-04-17 21:59:49,523 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:59:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-04-17 21:59:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-04-17 21:59:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-04-17 21:59:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-04-17 21:59:49,532 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-04-17 21:59:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:59:49,532 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-04-17 21:59:49,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:59:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-04-17 21:59:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:59:49,533 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:59:49,533 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:59:49,533 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:59:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:59:49,534 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-04-17 21:59:49,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:59:49,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717145772] [2020-04-17 21:59:49,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:59:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:59:49,629 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 21:59:49,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717145772] [2020-04-17 21:59:49,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:59:49,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:59:49,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786689062] [2020-04-17 21:59:49,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:59:49,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:59:49,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:59:49,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:59:49,632 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 4 states. [2020-04-17 21:59:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:59:49,660 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-17 21:59:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:59:49,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-04-17 21:59:49,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:59:49,662 INFO L225 Difference]: With dead ends: 60 [2020-04-17 21:59:49,662 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 21:59:49,663 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 21:59:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 21:59:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 21:59:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 21:59:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-17 21:59:49,669 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-04-17 21:59:49,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:59:49,669 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-17 21:59:49,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:59:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-17 21:59:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:59:49,670 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:59:49,670 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:59:49,671 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:59:49,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:59:49,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-04-17 21:59:49,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:59:49,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597020754] [2020-04-17 21:59:49,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:59:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:59:49,748 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 21:59:49,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597020754] [2020-04-17 21:59:49,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:59:49,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:59:49,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746168322] [2020-04-17 21:59:49,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:59:49,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:59:49,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:59:49,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:59:49,751 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 4 states. [2020-04-17 21:59:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:59:49,788 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-17 21:59:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:59:49,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 21:59:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:59:49,790 INFO L225 Difference]: With dead ends: 39 [2020-04-17 21:59:49,790 INFO L226 Difference]: Without dead ends: 29 [2020-04-17 21:59:49,790 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 21:59:49,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-17 21:59:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-17 21:59:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-17 21:59:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-17 21:59:49,795 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-17 21:59:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:59:49,795 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-17 21:59:49,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:59:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-17 21:59:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:59:49,796 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:59:49,796 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:59:49,797 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:59:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:59:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 1 times [2020-04-17 21:59:49,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:59:49,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192631754] [2020-04-17 21:59:49,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:59:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:59:49,900 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 21:59:49,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192631754] [2020-04-17 21:59:49,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:59:49,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:59:49,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099290258] [2020-04-17 21:59:49,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:59:49,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:59:49,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:59:49,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:59:49,903 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 5 states. [2020-04-17 21:59:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:59:49,945 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-17 21:59:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:59:49,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-17 21:59:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:59:49,946 INFO L225 Difference]: With dead ends: 27 [2020-04-17 21:59:49,946 INFO L226 Difference]: Without dead ends: 22 [2020-04-17 21:59:49,947 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:59:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-17 21:59:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-17 21:59:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-17 21:59:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-17 21:59:49,950 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-17 21:59:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:59:49,951 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-17 21:59:49,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:59:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-17 21:59:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:59:49,952 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:59:49,952 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:59:49,952 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:59:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:59:49,952 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-04-17 21:59:49,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:59:49,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52457820] [2020-04-17 21:59:49,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:59:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:59:49,982 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 21:59:49,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52457820] [2020-04-17 21:59:49,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:59:49,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:59:49,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095002018] [2020-04-17 21:59:49,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:59:49,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:59:49,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:59:49,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:59:49,985 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-04-17 21:59:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:59:49,990 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-17 21:59:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:59:49,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-17 21:59:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:59:49,991 INFO L225 Difference]: With dead ends: 21 [2020-04-17 21:59:49,991 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:59:49,991 INFO L678 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 [2020-04-17 21:59:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:59:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:59:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:59:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:59:49,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-17 21:59:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:59:49,992 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:59:49,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:59:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:59:49,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:59:49,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:59:49 BasicIcfg [2020-04-17 21:59:49,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:59:50,000 INFO L168 Benchmark]: Toolchain (without parser) took 4018.60 ms. Allocated memory was 137.4 MB in the beginning and 250.6 MB in the end (delta: 113.2 MB). Free memory was 97.9 MB in the beginning and 153.9 MB in the end (delta: -55.9 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:59:50,002 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 137.4 MB. Free memory was 117.7 MB in the beginning and 117.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-17 21:59:50,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.47 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 96.0 MB in the beginning and 157.8 MB in the end (delta: -61.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:59:50,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.31 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:59:50,004 INFO L168 Benchmark]: Boogie Preprocessor took 47.38 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:59:50,005 INFO L168 Benchmark]: RCFGBuilder took 448.52 ms. Allocated memory is still 201.3 MB. Free memory was 153.7 MB in the beginning and 134.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:59:50,006 INFO L168 Benchmark]: TraceAbstraction took 2750.58 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 134.3 MB in the beginning and 153.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:59:50,011 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 137.4 MB. Free memory was 117.7 MB in the beginning and 117.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.47 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 96.0 MB in the beginning and 157.8 MB in the end (delta: -61.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.31 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.38 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.52 ms. Allocated memory is still 201.3 MB. Free memory was 153.7 MB in the beginning and 134.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2750.58 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 134.3 MB in the beginning and 153.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 372 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1251 CheckedPairsTotal, 49 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 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 71 SDtfs, 42 SDslu, 61 SDs, 0 SdLazy, 47 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1116 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...